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Over-Voltage and Oscillation Suppression Circuit with Switching Losses Optimization and Clamping Energy Feedback for SiC MOSFET
编号：64 访问权限：公开 更新：2021-07-21 20:02:30 浏览：808次 张贴报告

报告开始：2021年08月27日 12:04（Asia/Shanghai）

报告时间：1min

所在会场：[P] Poster [P1] Poster 1

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摘要
The snubber circuit is a cost-effective solution to reduce the serious turn-off over-voltage and oscillation caused by the fast switching characteristics of SiC MOSFET. However, the turn-on switching losses will significantly increase due to the snubber decouples the power loop parasitic inductance during the switching process. In this paper, a SiC MOSFET over-voltage and oscillation suppression circuit (OVSC) with not only switching losses optimization feature but also the clamping energy feedback characteristic is proposed. The over-voltage and oscillation can be effectively suppressed by clamping capacitors, and those capacitors do not participate in the switching process until the over-voltage occurs, which is of benefit to the switching losses reduction compared with RC snubber circuits. Besides, the turn-off over-voltage and oscillation energy stored in clamping capacitors can be feedback to DC and load side through a passive branch composed of an energy feedback inductor and a diode. Experimental results show that OVSC has excellent over-voltage and oscillation suppression performance, and can significantly reduce switching losses compared with RC snubber circuits.
 
关键词
SiC MOSFET, over-voltage and oscillation, snubber circuit, switching losses optimization.
报告人
Yang ChengZi
Xi’an Jiaotong University

稿件作者
Yang ChengZi Xi’an Jiaotong University
Huaqing Li Xi'an Jiaotong University
Haoyuan Jin Xi’an Jiaotong University
龙洋 于 西安交通大学
Laili Wang Xi'an Jiaotong University
Yunqing Pei Xi'an Jiaotong University
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重要日期

  • 会议日期

    08月25日

    2021

    至

    08月27日

    2021

  • 04月21日 2021

    摘要截稿日期

  • 05月15日 2021

    摘要录用通知日期

  • 06月25日 2021

    终稿截稿日期

  • 08月24日 2021

    报告提交截止日期

  • 08月27日 2021

    注册截止日期

主办单位
IEEE
IEEE ELECTRONIC DEVICE SOCIETY
承办单位
Huazhong University of Science and Technology
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