Precise Evaluation of Repetitive Transient Overvoltages in Motor Windings in Wide-Bandgap Drive Systems

The increasing interest in employing wide-bandgap (WBG) drive systems has brought about very high power, high-frequency inverters enjoying switching frequencies up to hundreds of kilohertz. However, voltage surges with steep fronts, caused by turning semiconductor switches on/off in inverters, trave...
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Gespeichert in:

Autor*in:	Ashkan Barzkar [verfasserIn] Mona Ghassemi [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	drive system electric machine finite element analysis insulation system multiconductor transmission line (MCTL) theory transient overvoltage

Übergeordnetes Werk:	In: Vehicles - MDPI AG, 2020, 4(2022), 3, Seite 697-726
Übergeordnetes Werk:	volume:4 ; year:2022 ; number:3 ; pages:697-726

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/vehicles4030040

Katalog-ID:	DOAJ084789948

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520			\|a The increasing interest in employing wide-bandgap (WBG) drive systems has brought about very high power, high-frequency inverters enjoying switching frequencies up to hundreds of kilohertz. However, voltage surges with steep fronts, caused by turning semiconductor switches on/off in inverters, travel through the cable and are reflected at interfaces due to impedance mismatches, giving rise to overvoltages at motor terminals and in motor windings. The phenomena typically associated with these repetitive overvoltages are partial discharges and heating in the insulation system, both of which contribute to insulation system degradation and may lead to premature failures. In this article, taking the mentioned challenges into account, the repetitive transient overvoltage phenomenon in WBG drive systems is evaluated at motor terminals and in motor windings by implementing a precise multiconductor transmission line (MCTL) model in the time domain considering skin and proximity effects. In this regard, first, a finite element method (FEM) analysis is conducted in COMSOL Multiphysics to calculate parasitic elements of the motor; next, the vector fitting approach is employed to properly account for the frequency dependency of calculated elements, and, finally, the model is developed in EMTP-RV to assess the transient overvoltages at motor terminals and in motor windings. As shown, the harshest situation occurs in turns closer to motor terminals and/or turns closer to the neutral point depending on whether the neutral point is grounded or floating, how different phases are connected, and how motor phases are excited by pulse width modulation (PWM) voltages.
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topic_facet	drive system electric machine finite element analysis insulation system multiconductor transmission line (MCTL) theory transient overvoltage Mechanical engineering and machinery Machine design and drawing Motor vehicles. Aeronautics. Astronautics
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callnumber-first	T - Technology
author	Ashkan Barzkar
spellingShingle	Ashkan Barzkar misc TJ1-1570 misc TJ227-240 misc TL1-4050 misc drive system misc electric machine misc finite element analysis misc insulation system misc multiconductor transmission line (MCTL) theory misc transient overvoltage misc Mechanical engineering and machinery misc Machine design and drawing misc Motor vehicles. Aeronautics. Astronautics Precise Evaluation of Repetitive Transient Overvoltages in Motor Windings in Wide-Bandgap Drive Systems
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topic_title	TJ1-1570 TJ227-240 TL1-4050 Precise Evaluation of Repetitive Transient Overvoltages in Motor Windings in Wide-Bandgap Drive Systems drive system electric machine finite element analysis insulation system multiconductor transmission line (MCTL) theory transient overvoltage
topic	misc TJ1-1570 misc TJ227-240 misc TL1-4050 misc drive system misc electric machine misc finite element analysis misc insulation system misc multiconductor transmission line (MCTL) theory misc transient overvoltage misc Mechanical engineering and machinery misc Machine design and drawing misc Motor vehicles. Aeronautics. Astronautics
topic_unstemmed	misc TJ1-1570 misc TJ227-240 misc TL1-4050 misc drive system misc electric machine misc finite element analysis misc insulation system misc multiconductor transmission line (MCTL) theory misc transient overvoltage misc Mechanical engineering and machinery misc Machine design and drawing misc Motor vehicles. Aeronautics. Astronautics
topic_browse	misc TJ1-1570 misc TJ227-240 misc TL1-4050 misc drive system misc electric machine misc finite element analysis misc insulation system misc multiconductor transmission line (MCTL) theory misc transient overvoltage misc Mechanical engineering and machinery misc Machine design and drawing misc Motor vehicles. Aeronautics. Astronautics
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title	Precise Evaluation of Repetitive Transient Overvoltages in Motor Windings in Wide-Bandgap Drive Systems
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title_full	Precise Evaluation of Repetitive Transient Overvoltages in Motor Windings in Wide-Bandgap Drive Systems
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title_sort	precise evaluation of repetitive transient overvoltages in motor windings in wide-bandgap drive systems
callnumber	TJ1-1570
title_auth	Precise Evaluation of Repetitive Transient Overvoltages in Motor Windings in Wide-Bandgap Drive Systems
abstract	The increasing interest in employing wide-bandgap (WBG) drive systems has brought about very high power, high-frequency inverters enjoying switching frequencies up to hundreds of kilohertz. However, voltage surges with steep fronts, caused by turning semiconductor switches on/off in inverters, travel through the cable and are reflected at interfaces due to impedance mismatches, giving rise to overvoltages at motor terminals and in motor windings. The phenomena typically associated with these repetitive overvoltages are partial discharges and heating in the insulation system, both of which contribute to insulation system degradation and may lead to premature failures. In this article, taking the mentioned challenges into account, the repetitive transient overvoltage phenomenon in WBG drive systems is evaluated at motor terminals and in motor windings by implementing a precise multiconductor transmission line (MCTL) model in the time domain considering skin and proximity effects. In this regard, first, a finite element method (FEM) analysis is conducted in COMSOL Multiphysics to calculate parasitic elements of the motor; next, the vector fitting approach is employed to properly account for the frequency dependency of calculated elements, and, finally, the model is developed in EMTP-RV to assess the transient overvoltages at motor terminals and in motor windings. As shown, the harshest situation occurs in turns closer to motor terminals and/or turns closer to the neutral point depending on whether the neutral point is grounded or floating, how different phases are connected, and how motor phases are excited by pulse width modulation (PWM) voltages.
abstractGer	The increasing interest in employing wide-bandgap (WBG) drive systems has brought about very high power, high-frequency inverters enjoying switching frequencies up to hundreds of kilohertz. However, voltage surges with steep fronts, caused by turning semiconductor switches on/off in inverters, travel through the cable and are reflected at interfaces due to impedance mismatches, giving rise to overvoltages at motor terminals and in motor windings. The phenomena typically associated with these repetitive overvoltages are partial discharges and heating in the insulation system, both of which contribute to insulation system degradation and may lead to premature failures. In this article, taking the mentioned challenges into account, the repetitive transient overvoltage phenomenon in WBG drive systems is evaluated at motor terminals and in motor windings by implementing a precise multiconductor transmission line (MCTL) model in the time domain considering skin and proximity effects. In this regard, first, a finite element method (FEM) analysis is conducted in COMSOL Multiphysics to calculate parasitic elements of the motor; next, the vector fitting approach is employed to properly account for the frequency dependency of calculated elements, and, finally, the model is developed in EMTP-RV to assess the transient overvoltages at motor terminals and in motor windings. As shown, the harshest situation occurs in turns closer to motor terminals and/or turns closer to the neutral point depending on whether the neutral point is grounded or floating, how different phases are connected, and how motor phases are excited by pulse width modulation (PWM) voltages.
abstract_unstemmed	The increasing interest in employing wide-bandgap (WBG) drive systems has brought about very high power, high-frequency inverters enjoying switching frequencies up to hundreds of kilohertz. However, voltage surges with steep fronts, caused by turning semiconductor switches on/off in inverters, travel through the cable and are reflected at interfaces due to impedance mismatches, giving rise to overvoltages at motor terminals and in motor windings. The phenomena typically associated with these repetitive overvoltages are partial discharges and heating in the insulation system, both of which contribute to insulation system degradation and may lead to premature failures. In this article, taking the mentioned challenges into account, the repetitive transient overvoltage phenomenon in WBG drive systems is evaluated at motor terminals and in motor windings by implementing a precise multiconductor transmission line (MCTL) model in the time domain considering skin and proximity effects. In this regard, first, a finite element method (FEM) analysis is conducted in COMSOL Multiphysics to calculate parasitic elements of the motor; next, the vector fitting approach is employed to properly account for the frequency dependency of calculated elements, and, finally, the model is developed in EMTP-RV to assess the transient overvoltages at motor terminals and in motor windings. As shown, the harshest situation occurs in turns closer to motor terminals and/or turns closer to the neutral point depending on whether the neutral point is grounded or floating, how different phases are connected, and how motor phases are excited by pulse width modulation (PWM) voltages.
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title_short	Precise Evaluation of Repetitive Transient Overvoltages in Motor Windings in Wide-Bandgap Drive Systems
url	https://doi.org/10.3390/vehicles4030040 https://doaj.org/article/cfdf271ba9dc42fd8dcf41b904d170e9 https://www.mdpi.com/2624-8921/4/3/40 https://doaj.org/toc/2624-8921
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up_date	2024-07-04T00:33:16.547Z
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Precise Evaluation of Repetitive Transient Overvoltages in Motor Windings in Wide-Bandgap Drive Systems

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