Wyniki wyszukiwania dla: inverter

• THREE-LEVEL F-TYPE INVERTER

  Publikacja

  • C. Odeh
  • A. Lewicki
  • M. Morawiec
  • D. Kondratenko

  - IEEE TRANSACTIONS ON POWER ELECTRONICS - Rok 2021

  Given the recent available IGBT switch modules up to 6.5 kV, 1200 A rating, the prospect of the diode-free variant topology of the three-level neutral-point-clamped (3-level, T-type) inverter in certain medium voltage applications is bright; due to its small part count and low conduction losses compared to the diode-clamped NPC inverter. However, within this voltage range, the input dc voltage rating of 50% of the switches per...

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• New type T-Source inverter

  Publikacja

  • R. Strzelecki
  • M. Adamowicz
  • N. Strzelecka
  • W. Bury

  - Rok 2009

  This paper presents different topologies of voltage inverters with alternative input LC networks. The basic topology is known in the literature as a Z-source inverter (ZSI). Alternative passive networks were named by the authors as T-sources. T-source inverter has fewer reactive components in comparison to conventional Z-source inverter. The most significant advantage of the T-source inverter (TSI) is its use of a common voltage...

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• Current Source Inverter Fed Drive

  Publikacja

  • M. Morawiec
  • A. Lewicki

  - Rok 2021

  This book covers three-phase and multiphase (more than three-phase) motor drives including their control and practical problems faced in the field (e.g., adding LC filters in the output of a feeding converter), are considered. The new edition contains links to Matlab®/Simulink models and PowerPoint slides ideal for teaching and understanding the material contained within the book. Readers will also benefit from the inclusion of: A...

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• New type T-Source inverter

  Publikacja

  • R. Strzelecki
  • M. Adamowicz
  • N. Strzelecka
  • W. Bury

  - Rok 2009

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• Integrated Three-Level Dual-Phase Inverter

  Publikacja

  • C. Odeh
  • A. Lewicki
  • M. Morawiec
  • A. Jąderko

  - ENERGIES - Rok 2022

  In view of reducing the number of inverter legs that provide dual-phase, three-level output voltages (as may be needed in an uninterruptible power supply), and that also provide a wide range of output frequencies (as needed in an advanced motor drive system with wide speed ranges), a three-level, dual-phase inverter topology is presented in this paper. Its three-level attribute was based on the F-type inverter topological concept,...

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• Multipulse inverter structures with low voltage distortion

  Publikacja

  • R. Strzelecki
  • T. Sak
  • L. Roslaniec
  • J. Mucko

  - Rok 2016

  A novel approach to the voltage source inverters (VSI) construction is presented in the paper. The invented inverter structures allow to operate several DC/AC converters in parallel resulting in lower voltage distortions at extremely low switching frequency. The research presented in the paper describes such a parallel operation of the VSI’s which is possible thanks to the use of coupled inductors. The eighteen-pulse three-level...

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• Electric motor drive with inverter output filter

  Publikacja

  • J. Guziński
  • H. Abu-Rub
  • A. Zobaa

  - Rok 2011

  Przedstawiono zagadnienie sterowania i estymacji w układzie napędowym z silnikiem indukcyjnym i filtrem sinusoidalnym.Filtr użyty jest do wygładzenia prądu i napięcia silnika. Filtr wprowadza spadek napięcia i przesunięcie fazowe prądów i napięć uniemożliwiające stosowane bezczujnikowych metod sterowania wektorowego. Rozwiązaniem jest uwzględnienie filtru w sterowaniu i estymacji. Artykuł pokazuje takie rozwiązanie dla metody sterowania...

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• Predictive Current Control of Voltage-Source Inverter.

  Publikacja

  • H. Abu-Rub
  • J. Guziński
  • Z. Krzemiński
  • H. Toliyat

  - Rok 2004

  W artykule przedstawiono regulator prądu stojana silnika asynchronicznego z predykcją napiecia wyjściowego. Rozważono aspekty praktycznej realizacji algorytmu w układzie z procesorem sygnałowym związane z opóźnieniami pomiaru prądu przy zastosowaniu przetwornika A/C. Układ zrealizowano praktycznie przy wykorzystaniu układu FPGA. W pracy zamieszczono wyniki badań symulacyjnychi eksperymentalnych.

• A Five-Leg Three-Level Dual-Output Inverter

  Publikacja

  • C. Odeh
  • A. Lewicki
  • M. Morawiec
  • J. O. Ojo

  - IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS - Rok 2023

  Classical 3-level dual-output inverter, 3-L DOI, involves two similar 3-level inverters that provides a pair of 3-phase output voltages with same or different frequencies from common input voltage source. Flexibility of either operation of the constituting inverters is evident in this DOI; but total duplication of power switches is a major drawback. State of the art coupled 3-L DOIs reduce this drawback by providing series-shared...

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• Variable Speed AC Drives with Inverter Output Filters

  Publikacja

  • J. Guziński
  • H. Abu-Rub
  • P. Strankowski

  - Rok 2015

  The advance of variable speed drives systems (VSDs) engineering highlights the need of specific technical guidance provision by electrical machines and drives manufacturers, so that such applications can be properly designed to present advantages in terms of both energy efficiency and expenditure. This book presents problems and solutions related to inverter-fed electrical motors. Practically orientated, the book describes the...

• Comprehensive distortion compensation of grid-connected inverter currents

  Publikacja

  • A. Cichowski
  • P. Banach
  • W. Śleszyński
  • J. Nieznański

  - Rok 2014

  The paper presents a comprehensive approach to the compensation of phase current distortion of grid-connected power inverters. Four different sources of current distortion are addressed: imperfect grid synchronization caused by the distortion in the grid voltages, voltage fluctuations in the dc link, time delays in the estimation of grid voltages, and the distortion of inverter output voltages due to dead-time effects and related...

• Computer simulation of induction heating system with series inverter

  Publikacja

  • J. Zgraja
  • J. Bereza

  - COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING - Rok 2003

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• Control of Sensorless Electric Drive with Inverter Output Filter

  Publikacja

  • M. Adamowicz
  • J. Guziński

  - Rok 2005

  W artykule przedstawiono układ sterowanie silnikiem asynchronicznym pracyjący bez pomiaru prędkości obrotowej. Zastosowano nowy rodzaj obserwatora prędkości obrotowej będący połączeniem liniowego obserwatora oraz obserwatora zakłóceń. Jako zakłócenia potraktowano siłę elektromotoryczną indukowaną w silniku. Aby umożliwić poprawną pracę układu z filtrem wyjściowym falownika zastosowano symulator dynamiki filtru do wyznaczenia prądów...

• Novel single-stage buck-boost inverter with unfolding circuit

  Publikacja

  • O. Matiushkin
  • O. Husev
  • R. Strzelecki
  • S. Ivanets
  • A. Fesenko

  - Rok 2017

  A novel solution of a single-stage buck-boost inverter with unfolding circuit at the output stage is presented. The inverter has a wide range of input voltage regulation, minimum passive components and a very flexible control structure. It can be applied for renewable energy systems where high power density is required. Our simulation results confirmed all theoretical statements

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• Sensorless Control of Induction Machine Supplied by Current Source Inverter

  Publikacja

  • M. Morawiec

  - ASIAN JOURNAL OF CONTROL - Rok 2015

  The paper describes the voltage control technique of induction machines supplied by a current source inverter. The control system is based on proposed new multi-scalar variables, which are named “r.” The control system contains the output filter capacitor's model. In the sensorless control system the Z type backstepping speed observer was applied. The mathematical dependences are confirmed by simulation and experimental research.

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• Selective Harmonic Elimination PWM For a Cascaded Multi-level Inverter

  Publikacja

  • A. L. Kouzou
  • A. Krama
  • S. S. Refaat
  • H. Abu-Rub

  - Rok 2020

  This paper deals with the selective harmonic elimination pulse width modulation (SHE-PWM) technique. This technique is used for the elimination of selected dominant low order harmonics in the multi-level inverter output voltage. The presence of these harmonics is the essential drawback of such kind of inverters; especially when it is used for the control of different AC drivers. The SHE-PWM is based...

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• Sensorless Fault Detection of Induction Motor with Inverter Output Filter

  Publikacja

  • P. Strankowski
  • J. Guziński

  - Rok 2016

  The paper presents the problem of monitoring and fault detection of a sensorless voltage inverter fed squirrel cage induction motor with LC filter. The detection is based on load torque estimation of the investigated torque transmission system. The load torque is calculated besides the computation of other variables that are mandatory for sensorless drive operation such as rotor flux and speed. The implemented LC filter smooths...

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• Smart grid technologies in electric traction: Mini inverter station

  Publikacja

  • M. Bartłomiejczyk

  - Rok 2017

  The growing number of trams and trolleybuses equipped with recuperation systems contribute to the increase in the amount of energy recovered during braking. It raises questions about the possibility of its usage. One of such possibilities is the use of smart grid technology. The paper presents a case study of the use of braking energy in the trolleybus system for external loads by implementing mini inverter stations. Analysis is...

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• Three-Level Z-Source Neutral-Point-Clamped Inverter

  Publikacja

  • R. Strzelecki

  - Rok 2006

  The paper describes construction and the principles of activity, attributes and potential of 3-phase Z-type inverters. The paper focuses on the basic system and suggested 3-level system of a NPC type Z-inverter, which was elaborated by authors. Simplified theoretical analysis of both systems has been verified by detailed simulation research. In the last section of the article, the possibility to build multilevel Z- inverters based...

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• Accurate modeling of quasi-resonant inverter fed IM drive

  Publikacja

  • P. Musznicki
  • M. Turzyński
  • P. Chrzan

  - Rok 2013

  In this paper wide-band modeling methodology of a parallel quasi-resonant dc link inverter (PQRDCLI) fed induction machine (IM) is presented. The modeling objective is early-design stage prediction of conductive electromagnetic interference (EMI) emissions of the considered converter fed IM drive system. Operation principles of the selected topology of PQRDCLI feeding IM drive are given. Modeling of the converter drive system is...

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• Solutions of inverter systems in Shore-to-Ship Power supply systems

  Publikacja

  • R. Strzelecki
  • P. Mysiak
  • T. Sak

  - Rok 2015

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• Five-Phase EV Drive with Switched-Autotransformer (LCCAt) Inverter

  Publikacja

  • M. Adamowicz
  • J. Guzinski
  • P. Stec

  - Rok 2014

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• Destructive Consequences of PWM Inverter Feeding for Traction AC Motors

  Publikacja

  • J. Łuszcz
  • P. Dworakowski

  - Rok 2009

  The electric traction drives with an AC motor fed by a frequency converter are used more and more often nowadays. The most significant side effects, of a converter's output voltage forming PWM method for AC motor windings, are steep voltage changes, which can initiate several destructive phenomena. The paper presents the adverse influence of a converter common mode voltage on the motor windings' increased voltage exposure and the...

• Sensorless Control of Induction Motor Supplied by Current Source Inverter

  Publikacja

  • M. Morawiec

  - Rok 2012

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• Heat calculations for water-cooled radiators of the inverter for induction heating

  Publikacja

  • J. Zgraja

  - Przegląd Elektrotechniczny - Rok 2016

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• Asynchronous motor nonlinear control with inverter output LC filter

  Publikacja

  • J. Guziński
  • H. Abu-Rub

  - Rok 2009

  Filtr wyjściowy falownika jest stosowany w napędach elektrycznych prądu przemiennego o regulowanej prędkości w celu wygładzenia przebiegów prądów i napięć zasilających silnik. Zastosowanie filtru utrudnia realizację precyzyjnych metod sterowania silnikami, szczególnie w przypadku napędów bezczujnikowych (tj. bez czujnika prędkości obrotowej wału silnika). Ponieważ, ze względów praktycznych, nie stosuje się pomiarów prądów i napięć...

• Over-Voltage Studies in Inverter Fed Induction Motor Drives

  Publikacja

  • J. Łuszcz

  - Rok 2007

  W pracy przedstawiono metodę identyfikacji pojemności pasożytniczych uzwojeń silników asynchronicznych uwzględniającą ich rozłożony charakter. Przedstawiony szerokopasmowy model obwodowy uzwojeń silnika asynchronicznego pozwala na modelowanie zjawisk przepięciowych w silnikach asynchronicznych, w szczególności zasilanych poprzez przekształtniki energoelektroniczne. Zaproponowana metoda analizy umożliwia również określanie składowych...

• Output filter for voltage source inverter supplying induction motor

  Publikacja

  • Z. Krzemiński
  • J. Guziński

  - Rok 2005

  W artykule przedstawiono problemy związane z występowaniem składowej zerowej w falowniku napięcia. Jako rozwiązanie zastosowano filtr bierny składowej zerowej dodatkowo pełniący funkcję filtru sinusoidalnego. Filtr nie wprowadza zauważalnych przesunięć prądów i napięć na wejściu i wyjściu układu. Przedstawiono metodę doboru elementów filtru w prostokatnym układzie współrzędnych oraz wyniki badań symulacyjnych i eksperymentalnych....

• Advanced current regulated PWM inverter with simplified load model.

  Publikacja

  • H. Abu-Rub
  • J. Guziński
  • Z. Krzemiński

  - Rok 2004

  W artykule przedstawionio nowy regulator prądu stojana silnika asynchronicznego zasilanego z falownika napięcia. Regulator wykorzystuje obliczenia siły elektromotorycznej silnika. Rozważonio wpływ zmian parametrów silnika na działanie regulatora. Wykorzystano uproszczony model silnika bez uwzględnienienia rezystancji stojana. Zastosowano stałą częstotliwość próbkowania prądu. Układ zrealizowania w programie symulacyjnym oraz na...

• Control of voltage source inverter without dead-time effects.

  Publikacja

  • A. Lewicki
  • Z. Krzemiński

  - Rok 2004

  W artykule zaproponowano metodę dokładnego generowania wektora napięcia o małej amplitudzie w falowniku napięcia. Zaprezentowano metodę modulacji szerokości impulsów, w której wyeliminowano koniecznosć wprowadzania czasów martwych oraz kompensacji ich wpływu na napięcie wyjsciowe przekształtnika

• Speed sensorless asynchronous motor drive with inverter output lc filter

  Publikacja

  • J. Guziński
  • H. Abu-Rub

  - Rok 2010

  In this paper a speed sensorless ac drive with inverter and output LC filter is proposed. A nonlinear, decoupled field oriented control algorithm with a flux and speed close-loop observer is used. In spite of using LC filter on the inverter output, the sensorless system works precisely. That result are obtained as a result of the appropriate estimation and control system use. The theory, simulation, and experimental results are...

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• EMI mitigation of GaN power inverter leg by local shielding techniques

  Publikacja

  • P. Derkacz
  • J. Schanen
  • P. Jeannin
  • P. Chrzan
  • P. Musznicki
  • M. Petit

  - IEEE TRANSACTIONS ON POWER ELECTRONICS - Rok 2022

  This paper presents local shielding techniques applied to a half-bridge inverter leg with the aim to reduce the common mode (CM) current noise at converter’s DC input. The research study is conducted for 650V Enhancement mode Gallium Nitride (GaN) power transistor switches. Main contributors of parasitic capacitances referred to the inverter-leg middle point node are identified. Then, shielding solutions are proposed to reduce...

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• Series Passive Compensation of Common Mode Voltage in Multilevel Inverter Drives

  Publikacja

  • A. Kempski
  • R. Smolenski
  • R. Strzelecki

  - Rok 2005

  This paper presents an approach to the problem of a magnetic saturation of CM chokes that accompanies the method of passive compensation of a common mode (CM) voltage in an inverter drive system. Measurements have been provided in a drive system including multilevel inverters and the filter having sinusoidal output voltages and zero CM voltage. The theoretical analysis and experimental results show that the problem with magnetic...

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• Nonlinear Control of a Doubly Fed Generator Supplied by a Current Source Inverter

  Publikacja

  • K. Blecharz
  • M. Morawiec

  - ENERGIES - Rok 2019

  Nowadays, wind turbines based on a doubly fed induction generator (DFIG) are a commonly used solution in the wind industry. The standard converter topology used in these systems is the voltage source inverter (VSI). The use of reverse-blocking insulated gate bipolar transistor (RB-IGBT) in the current source inverter topology (CSI), which is an alternative topology, opens new possibilities of control methods. This paper presents...

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• Sensorless induction motor drive with voltage inverter and sine-wave filter

  Publikacja

  • J. Guziński
  • H. Abu-Rub

  - Rok 2013

  This paper presents a speed sensorless control system of an induction motor with an output LC filter. It is known that the parameters design of the filter gives sine wave motor supply voltage but complicates control and estimation process. The reason is that the voltage drop and phase shift between filter input and output signals are imposed, and hence the motor voltages and currents differ from the inverter output waveforms. To...

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• Bearing current path and pulse rate in PWM-inverter-fed induction

  Publikacja

  • A. Kempski
  • R. Strzelecki
  • R. Smolenski
  • Z. Fedyczak

  - Rok 2001

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• CCM and DCM operation analysis of cascaded quasi-Z-source inverter

  Publikacja

  • D. Vinnikov
  • I. Roasto
  • R. Strzelecki
  • M. Adamowicz

  - Rok 2011

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• Losses Model of the WPT System with Single-Phase T-Type Inverter

  Publikacja

  • V. Shevchenko
  • O. Husev
  • O. Veligorskyi
  • B. Pakhaliuk
  • R. Strzelecki

  - Rok 2020

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• Wiener Filtering Applied to Conducted EMI Estimation in Soft Switching Inverter

  Publikacja

  • P. Musznicki
  • P. Chrzan
  • S. Mandrek

  - Rok 2008

  W artykule tym przedstawiono metodę szacowania poziomu zaburzeń elektromagnetycznych przewodzonych generowanych w miekko-przełączalnym falowniku napięcia. Wykorzystano metodę filtracji Wienera, gdzie wykorzystano skończoną liczbę filtrów Wienera jako odzwierciedlenie wszystkich warunków generacji i propagacji zaburzeń. Do określenia transmitancji filtrów wykorzystano przebiegi napięć na zaciskach łączników energoelektronicznych...

• Exact generation of voltage vector in voltage inverter with pulse width modulation

  Publikacja

  • A. Lewicki
  • Z. Krzemiński
  • B. Zosiuk

  - International Review of Electrical Engineering-IREE - Rok 2006

  W artykule zaproponowano metodę modulacji szerokości impulsów dla falownika napięcia. Proponowana metoda rozwiązuje problemy związane z kompensacją czasów martwych oraz kompensacją wpływu parametrów łączników energolelektronicznych na napięcie wjściowe falownika. W artykule zaprezentowano metodę kompensacji między innymi pojemności pasożytniczych tranzystorów, dyskretyzacji czasów załączeń tranzystorów. Przedstawiona metoda modulacji...

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• Quasi-resonant dc-link inverter with a reduced number of active elements

  Publikacja

  • S. Mandrek
  • P. Chrzan

  - IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS - Rok 2007

  W artykule przedstawiono nową topologię równoległego quasi-rezonansowego obwodu pośredniczącego falownika napięcia. Opisano sekwencje miękkiej komutacji falownika w dwukierunkowym trybie pracy falowniczej i prostowniczej. Analiza układu została zweryfikowana badaniami symulacyjnymi i eksperymentalnymi. Przedstawiona topologia odznacza się prostą strukturą oraz małą ilością elementów aktywnych. Dzięki zastosowaniu krzepkiej strategii...

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• 3D PCB package for GaN inverter leg with low EMC feature

  Publikacja

  • P. Derkacz
  • P. Chrzan
  • P. Jeannin
  • P. Musznicki
  • M. Petit
  • J. Schanen

  - Rok 2020

  This paper presents the adaptation of a 3D integration concept previously used with vertical devices to lateral GaN devices. This 3D integration allows to reduce loop inductance, to ensure more symmetrical design with especially limited Common Mode emission, thanks to a low middle point stray capacitance. This reduction has been achieved by both working on the power layout and including a specific shield between the devices and...

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• A predictive estimation based control strategy for a quasi-resonant dc-link inverter

  Publikacja

  • M. Turzyński
  • P. Banach
  • P. Murawski
  • R. Pepliński
  • P. Chrzan

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Rok 2014

  In this paper the predictive estimation based control strategy for a quasi-resonant dc link inverter (PQRDCLI) is developed. Instead of direct measurement of dc link input inverter current – its estimation with one step prediction is applied. The PQRDCLI fed induction motor, controlled with a predictive current estimation stabilized inverter output voltage slopes independently of load. Moreover, reduction of overvoltage spikes...

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• SiC-based T-type modules for multi-pulse inverter with coupled inductors

  Publikacja

  • J. Rabkowski
  • T. Sak
  • R. Strzelecki
  • M. Grabarek

  - Rok 2017

  The paper presents SiC-based three-level T-type modules designed for a high-performance 30kVA DC/AC inverter operating at high frequency 85 kHz with low THD of the output voltage. This inverter system consists of two integrated parts. The first part is active and contains three parallelconnected three-phase T-type modules built with fast-switching SiC power transistors. The second, passive part of the system is a set of inductors...

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• Noninvasive method for rotor fault diagnosis in inverter fed induction motor drive

  Publikacja

  • P. Kołodziejek

  - Rok 2013

  This article presents a proposal, simulation and experimental results of a noninvasive rotor fault diagnosis method for the inverter fed induction motor drive. Comparing to reported methods the proposed one does not require any load, rotor brake, slip, mechanical or electrical system physical modification e.g. machine disassembly and can be applied regardless the rotor speed measurement or estimation method.

• Sensorless Multiscalar Control of Five-Phase Induction Machine with Inverter Output Filter

  Publikacja

  • J. Guziński
  • M. Morawiec
  • P. Strankowski
  • Z. Krzemiński
  • A. Lewicki
  • G. A. Kostro
  • K. Woronowski

  - Rok 2017

  The paper presents a complete solution for speed sensorless control system for five-phase induction motor with voltage inverter, LC filter and nonlinear control of combined fundamental and third harmonic flux distribution. The control principle, also known as multiscalar control, nonlinear control or natural variables control, is based on a use of properly selected scalar variables in control feedback to linearize controlled system....

• A Simplified SVPWM Technique for Five-leg Inverter with Dual Three-phase Output

  Publikacja

  • D. Kondratenko
  • A. Lewicki

  - Rok 2023

  This article proposes a simplified space vector pulse-width modulation (SVPWM) technique five-leg inverter with dual three-phase output. An idea to fed the dual tree-phase machine by the multiphase voltage source inverters (VSIs) is not new. Dual- and multi-motor drive systems are widely used in the industry applications. The most popular fields are: electric vehicles (EVs) and traction systems. Moreover, the specific characteristic...

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• Experimental Investigation of high frequency 3L-NPC qZS inverter for photovoltaic application

  Publikacja

  • O. Husev
  • S. Stepenko
  • C. Roncero-Clemente
  • E. Romero-Cadaval
  • R. Strzelecki

  - Rok 2013

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• Trans-Z-source-like inverter with built-in DC current blocking capacitors

  Publikacja

  • M. Adamowicz
  • J. Guzinski
  • D. Vinnikov
  • N. Strzelecka

  - Rok 2011

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• Comparison of Impedance-Source Networks for Two and Multilevel Buck–Boost Inverter Applications

  Publikacja

  • O. Husev
  • F. Blaabjerg
  • C. Roncero-Clemente
  • E. Romero-Cadaval
  • D. Vinnikov
  • Y. Siwakoti
  • R. Strzelecki

  - IEEE TRANSACTIONS ON POWER ELECTRONICS - Rok 2016

  mpedance-source networks are an increasingly popular solution in power converter applications, especially in single-stage buck-boost power conversion to avoid additional front-end dc-dc power converters. In the survey papers published, no analytical comparisons of different topologies have been described, which makes it difficult to choose the best option. Thus, the aim of this paper is to present a comprehensive analytical comparison...

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• The PWM current source inverter with IGBT transistors and multiscalar model control system

  Publikacja

  • M. Włas
  • M. Morawiec
  • Z. Krzemiński

  - Rok 2005

  W niniejszym artykule przedstawiono struktury układów sterowania maszyny indukcyjnej zasilanej z falownika prądu. Przedstawiono metodę modulacji szerokości impulsów dla falownika prądu. Pokazano modele matematyczne maszyny indukcyjnej klatkowej zasilanej z falownika prądu. Przedstawiono trzy układy regulacji sterowania multiskalarnego z czego dwa są nowe. Rozważania teoretyczne zweryfikowano za pomocą badań symulacyjnych.

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• Quasi-resonant DC-link voltage inverter with enhanced zero-voltage switching control

  Publikacja

  • M. Turzyński
  • P. Chrzan
  • M. Kolincio
  • S. Burkiewicz

  - Rok 2017

  A new topology modification of the parallel quasi-resonant circuit for a dc-link voltage inverter enables regulation of the zero voltage dc-link subperiods and the dc-link voltage gradient settings. The proposed circuit is based on four MOSFET switches with free-wheeling diodes for controlled quasi-resonant recharging between L-C tank in order to assure inverter zero voltage switching (ZVS) conditions. Design optimization of the...

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• Multilevel inverter neutral-point voltage sensor diagnostic based on the Extended Kalman Filter

  Publikacja

  • P. Szczepankowski
  • P. Kołodziejek

  - Rok 2013

  A new algorithm for neutral point voltage imbalance estimation in DC link of the three-level (3L) neutral point clamped (NPC) voltage source inverter (VSI) is proposed. Application of the proposed algorithm does not require any additional sensors. The unbalanced voltage calculation is based on the information derived from the inverter output measured currents and from the knowledge of the load model parameters. In order to estimate...

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• Reducing common mode voltage and bearing currents in quasi - resonant DC - link inverter

  Publikacja

  • M. Turzyński
  • P. Chrzan

  - IEEE TRANSACTIONS ON POWER ELECTRONICS - Rok 2020

  In the paper, a concept of separation of an inverter-fed induction motor drive from its mains supply by two transistor switches inserted in the dc-link circuit is reexamined based on the proposed parallel quasi-resonant dc-link inverter (PQRDCLI). The objective of the paper is to show an advantage of the proposed topology in limiting high frequency common mode voltage and bearing currents. In the laboratory setup, an induction...

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• The adaptive backstepping control of PMSM supplied by current source inverter for the field weakening region

  Publikacja

  • M. Morawiec

  - International Review of Electrical Engineering-IREE - Rok 2013

  The sensorless control system of permanent magnet synchronous motor PMSM supplied by current source inverter for field weakening operation is presented in this paper. The adaptive backstepping control system and the backstepping speed observer are presented. The control system is based on multi-scalar variables. The control variables are: dc-link voltage and the output current vector pulsation. The control system was named voltage...

• Sensorless control system of induction machine supplied by voltage source inverter with output filter

  Publikacja

  • M. Morawiec
  • J. Guziński

  - Rok 2015

  The paper focuses on sensorless control of the induction machines supplied by inverter with the output filters. “The novel” idea of the speed observer which is based on the backstepping approach is shown. The standard structure of the exponential observer is extended by the integrators and additional Z vector. The simulation and experimental results validate the proposed solution.

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• Hybridized Space-Vector Pulsewidth Modulation for Multiphase Two-Level Voltage Source Inverter

  Publikacja

  • A. Lewicki
  • C. I. Odeh
  • D. Kondratenko
  • M. Morawiec

  - IEEE TRANSACTIONS ON POWER ELECTRONICS - Rok 2022

  In space vector pulsewidth modulation (SVPWM) algorithms for multiphase two-level voltage source inverters (VSI), the components of active vectors in all orthogonal spaces have to be calculated within the processor and stored in its memory. These necessitate intensive computational efforts of the processor and large memory space. This article presents a hybridized SVPWM for multiphase two-level VSI. In this algorithm, elements...

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• Errors in the analysis of series resonant inverter/converter assuming sinusoidal waveforms of voltage and current

  Publikacja

  • J. Mucko
  • R. Strzelecki

  - Rok 2016

  In this paper the theory and simulation results of the series resonant inverter / converter are presented. In this work the authors carried out a detailed comparative analysis of results obtained using the method of AC analysis in the steady state for the first harmonic with the results of computer simulation. The AC analysis under certain conditions can lead to errors disqualifying this method. In particular, these errors appear...

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• Dead time effects compensation strategy by third harmonic injection for a five-phase inverter

  Publikacja

  • K. Łuksza
  • D. Kondratenko
  • A. Lewicki

  - Archives of Electrical Engineering - Rok 2024

  This paper proposes a method for compensation of dead-time effects for a fivephase inverter. In the proposed method an additional control subsystem was added to the field-oriented control (FOC) scheme in the coordinate system mapped to the third harmonic. The additional control loop operates in the fixed, orthogonal reference frame ( α - β coordinates) without the need for additional Park transformations. The purpose of this method...

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• MPPT and GMPPT Implementation for Buck-Boost Mode Control of quasi-Z-Source Inverter

  Publikacja

  • O. Husev
  • D. Vinnikov
  • C. Roncero-Clemente
  • F. Blaabjerg
  • R. Strzelecki

  - IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS - Rok 2022

  The focus is on the maximum power point tracking implementation for the buck-boost voltage mode control of a single-phase multilevel inverter based on a three-level neutral point clamped quasi-Z-source topology. To utilize shoot-through states only when boost function is needed and avoid it in the buck mode, two different control approaches are required. This work proposes merged control system which provides switching between...

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• The Adaptive Backstepping Control of Permanent Magnet Synchronous Motor Supplied by Current Source Inverter

  Publikacja

  • M. Morawiec

  - IEEE Transactions on Industrial Informatics - Rok 2013

  ...

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• Shaping the SPL Spectra of the Acoustic Noise Emitted by Inverter-Fed Indu- ction Motors

  Publikacja

  • A. Cichowski
  • J. Nieznański
  • M. Wołejko
  • A. Wojewódka

  - Rok 2003

  W artykule przedstawiono nowe podejście do zmniejszania wpływu właściwości mechanicznych maszyny na emitowany przez nią hałas akustyczny. Dokonano identyfikacji mechanicznych rezonansów maszyny wykorzystując modulację RPWM z losowym wyborem częstotliwości nośnej oraz modulację sigma delta, dla której otrzymano relatywnie płaskie widmo prądu. Skonstruowano na tej podstawie funkcję gęstości prawdopodobieństwa wyboru częstotliwości...

• Unidirectional DC/DC Converter with Voltage Inverter for Fast Charging of Electric Vehicle Batteries

  Publikacja

  • J. R. Szymanski
  • M. Żurek-mortka
  • D. Wojciechowski
  • N. Poliakov

  - ENERGIES - Rok 2020

  The paper proposes the adaptation of the industrial plant’s power network to supply electric vehicle (EV) fast-charging converters (above 300 kW) using renewable energy sources (RESs). A 600 V DC microgrid was used to supply energy from RESs for the needs of variable speed motor drives and charging of EV batteries. It has been shown that it is possible to support the supply of drive voltage frequency converters (VFCs) and charging...

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• Single-phase, Five-level Inverter with SPWM-Based Neutral Point Voltage Balancing Scheme

  Publikacja

  • D. Kondratenko
  • A. Lewicki
  • C. Odeh

  - Rok 2022

  Multilevel inverter topologies provide several advantages over two-level inverter configuration. These benefits are the reason for the growing interest in multilevel topologies among research society. One of the most popular topological concepts (diode and active switch clamping) requires neutral-point potential balancing due to series-connected capacitor banks across the input dc link in such derived inverter configurations. This...

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• Sensorless five-phase induction motor drive with third harmonic injection and inverter output filter

  Publikacja

  • P. Strankowski
  • J. Guziński
  • M. Morawiec
  • A. Lewicki
  • F. Wilczyński

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Rok 2020

  The paper presents a sensorless control approach for a five-phase induction motor drive with third harmonic injection and inverter output filter. In the case of the third harmonic injection being utilised in the control, the physical machine has to be divided into two virtual machines that are controlled separately and independently. The control system structure is presented in conjunction with speed and rotor flux observers that...

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• Inline Waveguide Filter With Transmission Zeros Using a Modified-T-Shaped-Post Coupling Inverter

  Publikacja

  • M. Y. Sandhu
  • M. Jasiński
  • A. Lamęcki
  • R. Gomez-Garcia
  • M. Mrozowski

  - IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS - Rok 2023

  This letter reports the design techniques for a class 2 of inline waveguide bandpass filters with sharp-rejection capabil3 ities at the lower stopband based on a novel nonlinear-frequency4 variant-coupling (NFVC) structure. The proposed NFVC consists 5 of a modified-T-shaped metallic post (MTP) that is placed at the 6 center of the waveguide broad wall with its open arms lying 7 along the waveguide width. The engineered NFVC structure 8...

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• Design of three-phase three-level CIC T-source inverter with maximum boost control

  Publikacja

  • T. Shults
  • O. Husev
  • C. Roncero-Clemente
  • F. Blaabjerg
  • R. Strzelecki

  - Rok 2015

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• Control of induction machine supplied by a current source inverter using the multi-scalar transformation and backstepping approach

  Publikacja

  • M. Morawiec
  • F. Wilczyński
  • A. Lewicki

  - Rok 2017

  The paper describes the voltage control technique of squire-cage induction machines supplied by a current source inverter. The control system is based on new transformation of the electric drive system (machine and inverter) state variables to the multi-scalar variables form. The backstepping approach is used to obtain the feedback control law. The control system contains the structure of the observer...

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• Modified SPWM Technique with Zero-Sequence Voltage Injection for a Five-Phase, Three-Level NPC Inverter

  Publikacja

  • C. Odeh
  • D. Kondratenko
  • A. Lewicki
  • A. Jąderko

  - ENERGIES - Rok 2021

  This article presents a modified sinusoidal pulse-width modulation (SPWM) scheme for a five-phase, three-level neutral-point-clamped inverter. The modulation scheme deploys a modified min–max function to inject the zero-sequence components into the reference modulating signals; hence enabling the effective utilization of the DC-link voltage. Balanced split-input DC-link voltages were achieved through further incorporation of adjustable...

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• Optimized Space Vector Modulation strategy for five phase voltage source inverter with third harmonic injection

  Publikacja

  • A. Lewicki
  • P. Strankowski
  • M. Morawiec
  • J. Guziński

  - Rok 2017

  This paper presents a simple and an effective SVM algorithm for five-phase Voltage-Source Inverters with the possibility to control independently the voltage vectors for fundamental and auxiliary orthogonal subspaces. The essential benefit is that output voltage is generated using only four active voltage vectors with limited numbers of switching. In the proposed solution, four active vectors are arbitrary chosen, independent of...

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• Modeling of a Quasi-Resonant DC Link Inverter Dedicated to Common-Mode Voltage and Ground Current Reduction

  Publikacja

  • M. Turzyński
  • M. Frivaldsky

  - ENERGIES - Rok 2020

  In this paper, the modeling methodology of the AC drive system with a Parallel Quasi-Resonant DC Link Inverter (PQRDCLI) is described. A presented modeling approach is an attractive tool used for the effective evaluation of a common-mode (CM) voltage and grounds current reduction methods. Designed models of inverter, induction machine (IM), and cable are simple, thus the methods for parameter extraction are not complicated. Verification...

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• Power Surge Compensator based on a Four Level Diode Clamped Inverter for ship application. Average model

  Publikacja

  • M. Grabarek
  • M. Parchomiuk
  • R. Strzelecki

  - Rok 2015

  Paper presents continuous average value model of Power Surge Compensator based on a Four Level Diode Clamped Inverter with super capacitor as a energy storage device. This conditioner is design for power surge or fluctuation elimination, by compensating it with energy stored in ESD. Continuous average value model of multilevel S-PWM has been presented also. Summary of raised problem is a simulation model made in PowerSim Psim 8...

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• Speed sensorless ac drive with inverter output filter and fault detection using load torque signal

  Publikacja

  • J. Guziński
  • H. Abu-Rub
  • H. A. Toliyat

  - Rok 2010

  In this paper, a sensorless induction motor (IM) drive using speed observer system is presented. The system includes load torque computation for gear fault detection. Nonlinear control method is adopted for controlling the motor over a wide speed range. An LC filter for smoothing current and voltage waveforms is used at the output of the voltage inverter. The use of filter imposes more building of the used observer to avoid using...

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• Speed Sensorless AC Drive with Inverter LC Filter and Fault Detection Using Load Torque Signal

  Publikacja

  • J. Guziński
  • H. Abu-Rub
  • P. Strankowski

  - Przegląd Elektrotechniczny - Rok 2017

  The industrial development in recent years has seen a major increase in the use of induction motors, whereby the cost has to be as low as possible and the lifetime as long as possible. To follow up this desire, investigations in this area have become very intense. For that reason, this paper presents a solution for driving an induction motor and simultaneous fault detection with no need for additional sensors. In order to achieve...

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• Control Strategy of a Five-Phase Induction Machine Supplied by the Current Source Inverter With the Third Harmonic Injection

  Publikacja

  • M. Morawiec
  • F. Wilczyński

  - IEEE TRANSACTIONS ON POWER ELECTRONICS - Rok 2022

  In the five-phase induction machine (IM), it is possible to better use the electromagnetic circuit than in the three-phase IM. This requires the use of an adequate converter system which will be supplied by an induction machine. The electric drive system described, in this article, includes the five-phase induction machine supplied by the current source inverter (CSI). The proposed novelty—not presented previously—is the control...

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• Power Surge Compensator based on a Four Level Diode Clamped Inverter for ship application. Average model

  Publikacja

  • M. Grabarek
  • M. Parchomiuk
  • R. Strzelecki

  - Rok 2015

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• Pulse-Width Modulation Template for Five-Level Switch-Clamped H-Bridge-Based Cascaded Multilevel Inverter

  Publikacja

  • C. I. Odeh
  • D. Kondratenko
  • A. Lewicki
  • M. Morawiec
  • A. Jąderko
  • J. Baran

  - ENERGIES - Rok 2021

  This article presents a carrier-based pulse-width modulation (PWM) template for a 5-level, H bridge-based cascaded multilevel inverter (MLI). The developed control concept generates adequate modulation template for this inverter topology wherein a sinusoidal modulating waveform is modified to fit in a single triangular carrier signal range. With this modulation approach, classical multiplicity and synchronization of the triangular...

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• Space-vector pulsewidth modulation for a seven-level cascaded H-bridge inverter with the control of DC-link voltages

  Publikacja

  • A. Lewicki
  • M. Morawiec

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Rok 2017

  The control strategy of DC-link voltages for a seven-level Cascaded H-Bridge inverter is proposed in this paper. The DC-link voltage balancing is accomplished by appropriate selection of H-Bridges and control of their duty cycles in Space-Vector Modulation (SVM) algorithm. The proposed SVM method allows to maintain the same voltage level on all inverter capacitors. Regardless of the balancing function, the...

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• Open-Phase Fault Detection Method for Sensorless Five-Phase Induction Motor Drives with an Inverter Output Filter

  Publikacja

  • P. Strankowski
  • J. Guziński
  • F. Wilczyński
  • M. Morawiec
  • A. Lewicki

  - Power Electronics and Drives - Rok 2019

  The paper presents the sensorless five-phase induction motor drive implementation with an inverter output filter with third harmonic injection. For the sensorless operation, the required observers are presented for the first and third harmonics with consideration of the inverter output filter. Moreover, the interaction of the observers and the control system is capable to handle a deactivation of one or two phases, which improves...

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• Design and experimental validation of a single-stage PV string inverter with optimal number of interleaved buck-boost cells.

  Publikacja

  • A. Fesenko
  • O. Matiushkin
  • O. Husev
  • D. Vinnikov
  • R. Strzelecki
  • P. Kołodziejek

  - ENERGIES - Rok 2021

  Increasing converter power density is a problem of topical interest. This paper discusses an interleaved approach of the efficiency increase in the buck-boost stage of an inverter with unfolding circuit in terms of losses in semiconductors, output voltage ripples and power density. Main trends in the power converter development are reviewed. A losses model was designed and used for the proposed solution to find an optimal number...

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• Inline Microstrip Bandpass Filter With Two Transmission Zeros and Increased Order Using Spurious Resonance of Frequency-Dependent Inverter

  Publikacja

  • M. Jasiński
  • M. Y. Sandhu
  • A. Lamęcki
  • R. Gómez-García
  • M. Mrozowski

  - Rok 2022

  A design method for a class of fourth-order inline microstrip bandpass filter with two transmission zeros and 20% fractional bandwidth is presented. The filter consists of two quarter-wavelength transmission-line resonators coupled by a frequency-dependent inverter. The inverter is composed of two open-ended stubs that are connected by an interdigital capacitor and introduces two poles and two transmission zeros in the filter response....

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• Feasibility Study GaN Transistors Application in the Novel Split-Coils Inductive Power Transfer System with T-Type Inverter

  Publikacja

  • V. Shevchenko
  • B. Pakhaliuk
  • O. Husev
  • O. Veligorskyi
  • D. Stepins
  • R. Strzelecki

  - ENERGIES - Rok 2020

  A promising solution for inductive power transfer and wireless charging is presented on the basis of a single-phase three-level T-type Neutral Point Clamped GaN-based inverter with two coupled transmitting coils. The article focuses on the feasibility study of GaN transistor application in the wireless power transfer system based on the T-type inverter on the primary side. An analysis of power losses in the main components of the...

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• Space Vector Pulsewidth Modulation Strategy for Multilevel Cascaded H-Bridge Inverter With DC-Link Voltage Balancing Ability

  Publikacja

  • A. Lewicki
  • C. Odeh
  • M. Morawiec

  - IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS - Rok 2023

  Space vector pulsewidth modulation (SVPWM) algorithms for cascaded H-bridge multilevel (CHB ML) inverter usually provide the possibility of using several combinations of active voltage vectors to generate the same output voltage vector. For preselected H-bridges, some of them may generate output voltages opposite to the assumed direction. This results in the change of the dc-link voltages of these H-bridges in the opposite direction...

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• Failure analysis of a high-speed induction machine driven by a SiC-inverter and operating on a common shaft with a high-speed generator

  Publikacja

  • Ł. Breńkacz
  • P. Bagiński
  • M. Adamowicz
  • S. Giziewski

  - Eksploatacja i Niezawodność - Maintenance and Reliability - Rok 2022

  Due to ongoing research work, a prototype test rig for testing high-speed motors/generators has been developed. Its design is quite unique as the two high- speed machines share a single shaft with no support bearings between them. A very high maximum operating speed, up to 80,000 rpm, was required. Because of the need to minimise vibration during operation at very high rotational speeds, rolling bearings were used. To eliminate...

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• Artificial Intelligence-Based Weighting Factor Autotuning for Model Predictive Control of Grid-Tied Packed U-Cell Inverter

  Publikacja

  • M. Mohamed-Seghir
  • A. Krama
  • S. Refaat
  • M. Trabelsi
  • H. Abu-Rub

  - ENERGIES - Rok 2020

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• The time-varying low-frequency magnetic-field emitted from the ship’s inverter-fed induction motor

  Dane Badawcze

  open access

  • B. Pałczyńska
  • J. Wyszkowski

  The dataset contains the magnetic field measurement results that are part of a comprehensive study on the assessment of the magnetic field emissions onboard of the research-training vessel. The measurements were carried out, nearby the bow thruster motor fed from the inverter, during maneuvering and the sea voyage. The bow thruster is assembled in the...

• Four level inverter's DC bus voltage balancing with 3-terminal DAB converter

  Publikacja

  • M. Grabarek
  • R. Strzelecki
  • V. Tomasov
  • D. Vinnikov

  - Rok 2016

  —Multilevel inverters become more and more popular, especially in the medium or high voltage and high power applications. Unfortunately, some of inverter topologies require additional DC bus voltage balancing systems. This paper presents a novel approach to such systems, which is based on a multiple terminal DAB converter. Along with the voltage balancing function the proposed solution enables the connection of energy storage devices...

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• LCCT-Z-Source inverters

  Publikacja

  • M. Adamowicz

  - Rok 2011

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• Destructive impact of PWM inverters on traction AC motors

  Publikacja

  • J. Łuszcz
  • P. Dworakowski

  - ELECTROMOTION - Rok 2010

  The electric traction drives with an AC motor fed by a frequency converter are used more and more often nowadays. The most significant side effects, of a converter's output voltage forming PWM method for AC motor windings, are steep voltage changes, which can initiate several destructive phenomena. The paper presents the adverse influence of a converter common mode voltage on the motor windings's increased voltage exposure and...

• Modular multipulse voltage source inverters with integrating coupled reactors

  Publikacja

  • R. Strzelecki
  • T. Sak
  • N. Strzelecka

  - Rok 2016

  A novel approach to the voltage source inverters (VSI) construction is presented in the paper. The invented inverter structures allow to operate several DC/AC converters in parallel resulting in lower voltage distortions at extremely low switching frequency. The research presented in the paper describes such a parallel operation of the VSI’s which is possible thanks to the use of coupled inductors. The eighteen-pulse and twenty-four-pulse...

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• Buck-Boost Inverters with Symmetrical Passive Four-terminal Networks

  Publikacja

  • R. Strzelecki
  • M. Adamowicz
  • D. Wojciechowski

  - Rok 2007

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• Hybrid Modulation for Modular Voltage Source Inverters with Coupled Reactors

  Publikacja

  • K. J. Szwarc
  • P. Szczepankowski
  • J. Nieznański
  • C. Swinarski
  • A. Usoltsev
  • R. Strzelecki

  - ENERGIES - Rok 2020

  This paper proposes and discusses a concept of a hybrid modulation for the control of modular voltage source inverters with coupled reactors. The use of coupled reactors as the integrating elements leads to significant reduction in the size and weight of the circuit. The proposed modulation combines novel coarsely quantized pulse amplitude modulation (CQ-PAM) and innovative space-vector pulse width modulation (SVPWM). The former...

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• Hybridized PWM Strategy for Three- and Multiphase Three-Level NPC Inverters

  Publikacja

  • A. Lewicki
  • D. Kondratenko
  • C. Odeh

  - IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS - Rok 2024

  A simple hybridized pulsewidth modulation (PWM) algorithm for three- and multiphase three-level neutral point clamped (NPC) inverters is proposed. The proposed solution is based on classical space vector PWM (SVPWM) algorithms for two-level inverters but can also be based on sinusoidal PWM with min–max injection. An additional level of output voltage is obtained by modifying the resulting switching patterns taking into account...

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• Resonant DC link inverters for AC motor drive systems – critical evaluation

  Publikacja

  • M. Turzyński
  • P. Chrzan

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Rok 2019

  In this survey paper, resonant and quasiresonant DC link inverters are reexamined for AC motor drive applications. Critical evaluation of representative topologies is based on simulation and waveform analysis to characterize current/voltage stress of components, control timing constraints and feasibility. A special concern over inverter common-mode voltage and voltage gradient du/dt limitation capacity is discussed for motor bearing...

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• Common-Mode Voltage and Bearing Currents in PWM Inverters: Causes, Effects and Prevention

  Publikacja

  • J. Guziński

  - Rok 2014

  In modern induction motor drives an increase of transistors' switching frequency and a decrease of switching times are the sources of some serious problems. The high dv/dt and the common mode voltage generated by the inverter PWM control results in the appearances of bearing currents, shaft voltages, motor terminal overvoltages, the decrease of motor efficiency, and electromagnetic interference. The aspects of common mode (CM)...

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• Space vector modulation in multilevel inverters of the servo drives of the trajectory measurements telescopes

  Publikacja

  • V. Tomasov
  • A. Usoltsev
  • D. Vertegel
  • R. Strzelecki

  - Izvestiya vysshikh uchebnykh zavedeniy. Priborostroenie - Rok 2017

  Using the MatLab/Simulink mathematical model of a three-phase three-level voltage inverter, the influence of the space-vector modulation (SVM) algorithm on the pulsations of the current (torque) of an AC motor in the range of low rotation speeds is considered. It is shown that the SVM of the second kind does not provide a pulsations level comparable to the pulsations of a sinusoidal pulse-width modulation (SPWM), both in the static...

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• Self-Tuning Dead-Time Compensation Method for Voltage-Source Inverters

  Publikacja

  • A. Cichowski
  • J. Nieznański

  - Rok 2005

  Przedstawiono nową, kompleksową metodę kompensacji zniekształceń napięcia wyjściowego falownika z modulacją szerokości impulsów. Proponowana metoda umożliwia automatyczne dopasowanie parametrów charakterystyki kompensacyjnej do aktualnej konfiguracji falownika i obciążenia, np. po zmianie przewodu łączącego falownik z obciążeniem. Adaptacja do nowych warunków polega na dostrajaniu wartości parametrów zależności opisującej napięcie...

• Modeling the effect of parasitic capacitances on the dead-time distortion in multilevel NPC inverters

  Publikacja

  • K. J. Szwarc
  • A. Cichowski
  • J. Nieznański
  • P. Szczepankowski

  - Rok 2011

  A simple model is derived and verified for evaluating the effect of parasitic capacitances on the dead-time related voltage distortion in multilevel NPC voltage source inverters. The model permits well-defined and precise compensation of dead-time distortion, exhibiting meaningful improvement on compensation methods neglecting the effects of parasitic capacitances. A simple formula is given for evaluating the capacitances as serial/parallel...

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• Open-transistor fault diagnostics in voltage-source inverters by analyzing the load current

  Publikacja

  • W. Śleszyński
  • J. Nieznański
  • A. Cichowski

  - IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS - Rok 2009

  Przedstawiono nową metodę detekcji i lokalizacji uszkodzeń polegających na braku przewodzenia tranzystorów w falownikach napięcia zasilających silniki indukcyjne. Metoda jest rozszerzeniem, opracowanej wcześniej, metody wykorzystującej znormalizowane składowe stałe prądów obciążenia. Znormalizowane wartości średnie prądów powiązano z dodatkowymi wskaźnikami diagnostycznymi, które zawierają informacje o czasie trwania nieprzewodzenia...

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• Open-transistor fault diagnostics in voltage-source inverters by analyzing the load current

  Publikacja

  • W. Śleszyński
  • J. Nieznański

  - Rok 2007

  A novel method is presented for the detection andisolation of open-transistor faults in voltage-source invertersfeeding low-power AC motors. The method is based onmonitoring two diagnostic signals, one indicating sustained nearzerovalues of output current and thus permitting fault detection,the other permitting the isolation of the particular transistorwhich went faulty. The latter signal is the ratio of the averagephase current...

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