Jarosław Guziński - Publikacje - MOST Wiedzy

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Rok 2024
  • A Robust Random Forest Model for Classifying the Severity of Partial Discharges in Dielectrics
    Publikacja

    - Rok 2024

    Partial Discharges (PDs) are a common source of degradation in electrical assets. It is essential that the extent of the deterioration level of insulating medium is correctly identified, to optimize maintenance schedules and prevent abrupt power outages. Temporal PD signals received from damaged insulation, collected through the IEC-60270 method is the gold standard for PD detection. Temporal signals may be transformed to the frequency...

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Rok 2023
  • Design and Evaluation of the Compact and Autonomous Energy Subsystem of a Wave Energy Converter
    Publikacja

    This paper presents the results of the design process focused on the development of the energy subsystem (ES) of a wave energy converter (WEC). The ES is an important electrical part that significantly affects the energy reliability and energy efficiency of the entire WEC device. The designed ES was intended for compact WECs powering IoT network devices working in the distributed grid. The developed ES is an electronic circuit...

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  • Design of an Autonomous IoT Node Powered by a Perovskite-Based Wave Energy Converter

    This paper presents the results of experimental research focused on wave energy harvesting and its conversion to power Internet of Things (IoT) devices. The harvesting and conversion process was performed using a wave energy converter (WEC) consisting of a lead zirconate titanate piezoelectric ceramic perovskite material and a prototype power electronic circuit. The designed WEC was considered as a power supply for an end node...

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  • Propagation Characteristics of Partial Discharges in an Oil-Filled Power Transformer
    Publikacja
    • S. M. Kameli
    • S. S. Refaat
    • A. Ghrayeb
    • H. Abu-Rub
    • J. Guziński

    - Rok 2023

    Power transformers are among the most important assets in the power transmission and distribution grid. However, they suffer from degradation and possible faults causing major electrical and financial losses. Partial discharges (PDs) are used to identify the insulation health status and their degradation level. PDs are incipient, low-magnitude faults caused by localized dielectric breakdown. Those activities emit signals in many...

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Rok 2022
Rok 2021
  • High Performance Control of AC Drives with Matlab/ Simulink
    Publikacja

    - Rok 2021

    Explore this indispensable update to a popular graduate text on electric drive techniques and the latest converters used in industry. The Second Edition of High Performance Control of AC Drives with Matlab®/Simulink delivers an updated and thorough overview of topics central to the understanding of AC motor drive systems. The book includes new material on medium voltage drives, covering state-of-the-art technologies and challenges...

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  • MRAS-Based Switching Linear Feedback Strategy for Sensorless Speed Control of Induction Motor Drives
    Publikacja

    - ENERGIES - Rok 2021

    This paper presents a newly designed switching linear feedback structure of sliding mode control (SLF-SMC) plugged with an model reference adaptive system (MRAS) based sensorless fieldoriented control (SFOC) for induction motor (IM). Indeed, the performance of the MRAS depends mainly on the operating point and the parametric variation of the IM. Hence, the sliding mode control (SMC) could be considered a good control alternative...

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  • The Effect of Protrusions on the Initiation of Partial Discharges in XLPE High Voltage Cables
    Publikacja

    - Bulletin of the Polish Academy of Sciences-Technical Sciences - Rok 2021

    This paper is focusing on 3D Finite Elements Analysis (FEA) based modelling of protrusions as defects or imperfections in the XLPE high voltage cable. This study is aiming to examine the impact protrusions have on the initiation of partial discharges. Spherical and ellipsoidal protrusions with different sizes at the conductor screen of the high voltage cable is an essential content of this paper. In addition, a spherical gas-filled...

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  • The Impact of Thermal Stresses on Volume Resistivity: Performance Comparison between TR-XLPE and XLPE Cables
    Publikacja

    - Rok 2021

    Most failures in electric power cables are attributed to the development of water trees inside the insulating materials. Thus, the development and utilization of Tree Retardant Cross-Linked Polyethylene (TR-XLPE) based cables have recently been given great attention to overcome the treeing issues. TR-XLPE cables use low-density polyethylene compounds suppressing the formation of water trees while retaining excellent electrical,...

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