Mikołaj Bartłomiejczyk - Publications - Bridge of Knowledge

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Year 2013
Year 2020
Year 2011
Year 2017
Year 2014
  • Analysis of transformer state by fuzzy TOPSIS and AHP method
    Publication

    - Year 2014

    The paper presents mathematical models TOPSIS and AHP methods, which was utilized on insulating state of distribution transformer to analyze and sensibility of individual measurements methods mutual comparison. We can uniquely determine the importance of these measurements methods with this mathematical apparatus in these measurements methods in insulating state of transformers.

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  • Automated Diagnostics of Current Pick-Up Disturbances in Electric Traction Networks
    Publication

    - Year 2014

    The present work defines the basic causes of bow disturbances of current pick-up, sets a task of establishing a system of automated control of bow disturbances at feeder zones of electric traction networks, proposes structural variants of the technical system implementation, describes the algorithm of detection of bow disturbances of current pick-up.

  • Diagnostics of thermal processes in antenna systems of broadcast stations
    Publication

    - Przegląd Elektrotechniczny - Year 2014

    Diagnostics is an important element associated with the operation of a radio antenna systems, allowing earlier detection of potential damage. Thermography is one of the diagnostic tools, which allows for non-invasive assessment of technical condition. It brings together both financial savings associated with the removal of the damage and the potential effects caused by it. The article presents an example of using a thermal imaging...

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  • Energy recovery effectiveness in trolleybus transport
    Publication

    - ELECTRIC POWER SYSTEMS RESEARCH - Year 2014

    Nowadays the issue of electric energy saving in public transport is becoming a key area of interest whichis connected both with a growth in environmental awareness of the society and an increase in the pricesof fuel and electricity. One of the possibilities to reduce energy consumption in urban public transport isto increase the extent of regenerative braking energy utilization. This can be achieved by its accumulationin the supercapacitors...

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  • Energy savings by application of supercapacitor storage in trolleybus supplying station - analysis of experimental results
    Publication

    Storage devices can be divided into two groups: on-board energy storage devices, which are placed in the vehicles and off-board energy storage devices situated in traction substations or between them. Current research is focused mainly on two objectives. The first is to reduce the energy demand by introducing on-board energy storages in light electric vehicles like trams, trolleybuses or electrobuses. The latter is to provide a...

Year 2022
  • Application of Traction Supply System for Charging Electric Cars
    Publication

    - ENERGIES - Year 2022

    The development of electromobility involves the development of electric cars charging infrastructure. The increase of the number of chargers poses new demands for the AC power grid, especially in regard to its capacity of delivering high peak power. As an alternative for the public AC power grid, urban electrified transportation systems (trams, trolleybuses, and metro) can be used for supplying electric cars chargers. The article...

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  • Compensation of Voltage Drops in Trolleybus Supply System Using Battery-Based Buffer Station
    Publication

    - ENERGIES - Year 2022

    This paper analyzes the results of a trial operation of a battery-based buffer station supporting a selected section of trolleybus power supply systems in Pilsen, Czech Republic. The buffer station aims to prevent the catenary from excessive voltage drops in a part of the route that is most remote from the traction substation. Compensation of voltage drops is carried out by continuously measuring the catenary voltage and injecting...

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  • Innovative Bidirectional Isolated High-Power Density On-Board Charge for Vehicle-to-Grid
    Publication
    • R. Hrbáč
    • L. Hrdina
    • V. Kolar
    • Z. Slanina
    • V. Blazek
    • T. Vantuch
    • M. Bartłomiejczyk
    • S. Misak

    - SENSORS - Year 2022

    This paper deals with developing and implementing a bidirectional galvanically isolated on-board charger of a high-power density. The power density of the new charger was 4 kW/kg and 2.46 kW/dm3, and the maximum efficiency was 96.4% at 3.4 kW. Due to the requirement to achieve a high-power density, a single-stage inverter topology was used. Regarding switching losses, due to the topology of the circuit with so-called hard switching,...

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Year 2018
Year 2015
Year 2012
Year 2021
  • Economic benefits of dynamic charging of electric buses
    Publication

    - Year 2021

    Diesel engines buses are still the most used type of buses. Electric buses provide promising green alternatives and a lot of advantages, but their main disadvantages are limited travel range and long charging time. This article is a presentation of innovative solution for charging of electric busses - Dynamic Charging (IMC). The modern IMC system in Solingen was presented. At the end of the article, a proposal was made to introduce...

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  • Ensuring sustainable development of urban public transport: A case study of the trolleybus system in Gdynia and Sopot (Poland)
    Publication

    - JOURNAL OF CLEANER PRODUCTION - Year 2021

    Electromobility is a vital tool in reducing the environmental impact of transportation. A technologically mature means of public transport is the trolleybus. Based on a case study of the Polish cities of Gdynia and Sopot, this paper explores the factors that influence the development of the trolleybus system. Recent developments of in-motion charging (IMC) technology are analysed what provides a new analytical framework for the...

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Year 2010
Year 2009
Year 2016
Year 2008

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