Multi-mode active switching strategy for safe operating area of Si／SiC-hybrid-switch-based inverter throughout life cycle

被引：0

作者：

Tu C. ^{[1
]}

Han S. ^{[1
]}

Long L. ^{[1
]}

Xiao F. ^{[1
]}

Xiao B. ^{[1
]}

Guo Q. ^{[1
]}

机构：

[1] National Electric Power Conversion and Control Engineering Technology Research Center, Hunan University, Changsha

来源：

Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2023年 / 43卷 / 10期

基金：

中国国家自然科学基金;

关键词：

full life cycle; hybrid switch; multi-mode switching; reliability; safe operating area;

D O I：

10.16081/j.epae.202309013

中图分类号：

学科分类号：

摘要：

By adopting a multi-mode switching strategy for the Si insulate-gate bipolar transistor（Si IGBT）／SiC metal-Oxide semiconductor field-effect transistor（SiC MOSFET） hybrid switch，the converter has the ability to cope with complex operating conditions. However，the influence of fatigue aging on the mode switching threshold current is not considered in the existing switching strategies，which is likely to cause thermal failure of the hybrid switch at the late stage of the aging process，which seriously threatens the reliable operation of the converter. Based on this，a multi-mode active switching strategy for safe operating area of Si／SiC-hybrid-switch-based inverter throughout life cycle is proposed. Based on the influence of fatigue aging on the maximum safe operating current of inverter，the characterization process of the safe working area of the inverter considering the aging process is designed. According to the results of safe operating area characterization，a multi-switching mode active switching strategy suitable for the whole life cycle of hybrid switch is proposed. The experimental results show that the strategy can dynamically adjust the switching mode to converse threshold current for different aging degrees of hybrid switch，so as to ensure the operation reliability of the inverter throughout the switch whole life cycle. © 2023 Electric Power Automation Equipment Press. All rights reserved.

引用

页码：128 / 135

页数：7

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