2022
DOI: 10.1109/access.2022.3210348
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The Insulation Resilience of Inverter-Fed Low Voltage Traction Machines: Review, Challenges, and Opportunities

Abstract: The use of wide bandgap (WBG) semiconductor devices, which enable higher switching slew rates, and the increase in DC link voltage, which provides system-wide advantages, exposes the winding system of traction machines to enhanced electrical stress. The resulting nonlinear voltage distribution along the motor winding favors partial discharges (PD), which in low voltage (LV) machines causes excessive damage to the insulation system, and premature failure can occur. A simple solution by increasing the enamel thi… Show more

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Cited by 18 publications
(2 citation statements)
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References 126 publications
(222 reference statements)
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“…Upcoming challenges: This review has characterised the main power device technologies suitable for HGV applications. Nevertheless, considering the converter implementation, other challenges include EMI/EMC [93][94][95], investigating the impact of high voltage commutation rates on motor insulation reliability [96][97][98], power module/converter designs involving multiple chips in parallel and optimised busbars [99][100][101], thermal management and increased power densities [102,103], short circuit detection [104,105] and application-specific qualification methodologies/guidelines, as suggested by the JEDEC JC-70 guidelines and the ECPE guidelines for the qualification of power modules used in motor vehicles (AQG 324) [106]. The increased commercial availability of higher voltage devices (1.7 kV to 3.3 kV rated) may open new avenues for higher voltage charger designs and even higher inverter bus voltages.…”
Section: Discussionmentioning
confidence: 99%
“…Upcoming challenges: This review has characterised the main power device technologies suitable for HGV applications. Nevertheless, considering the converter implementation, other challenges include EMI/EMC [93][94][95], investigating the impact of high voltage commutation rates on motor insulation reliability [96][97][98], power module/converter designs involving multiple chips in parallel and optimised busbars [99][100][101], thermal management and increased power densities [102,103], short circuit detection [104,105] and application-specific qualification methodologies/guidelines, as suggested by the JEDEC JC-70 guidelines and the ECPE guidelines for the qualification of power modules used in motor vehicles (AQG 324) [106]. The increased commercial availability of higher voltage devices (1.7 kV to 3.3 kV rated) may open new avenues for higher voltage charger designs and even higher inverter bus voltages.…”
Section: Discussionmentioning
confidence: 99%
“…A higher voltage also poses challenges in the design of electrical components and systems. Higher voltages imply higher stress on the passive components and the winding insulations of the iPMSM [3]- [7], or a higher cosmic ray failure rate of the semiconductors [8], [9], which can lead to a reduced lifetime of the components. Moreover, the high battery voltage, and thus the DC-Link voltage, leads to disadvantages during the operation of the electric drive.…”
Section: Introductionmentioning
confidence: 99%