@inproceedings{71c19a13f2f6419788828b97ee7baedd,
title = "A Diode-Free MOV2-RC Snubber for Solid-State Circuit Breaker",
abstract = "This paper presents a diode-free double metal oxide varistor-resistor-capacitor (MOV2-RC) snubber to provide overvoltage protection in dc solid-state circuit breakers (dc SSCBs). MOV2-RC snubber is introduced and investigated for SSCBs application. The proposed MOV2-RC snubber prevents voltage overshoot and ensures smooth turn-off voltage slew rate of SSCBs. Meanwhile, compared with conventional MOV-resistor-capacitor-diode (MOV-RCD) snubber, utilization of a low-voltage MOV (LMOV) to replace the diode avoids the influence of availability issue of state-of-the-art SiC Schottky diode raised by global power semiconductor shortage due to coronavirus disease 2019 (COVID-19). It also reduces the cost of snubber circuit for SSCBs. Working principles and design procedures of the MOV2-RC snubber are presented. The effectiveness of the proposed snubber circuit is verified by experiments with a 400V/140A dc SSCB prototype. The experimental results show the clamping voltage of 1.1 kV and turn-off dv/dt of 7.9 V/ns. The key component of MOV2-RC snubber (LMOV) has 30 times lower cost and 3 times better availability compared to MOV-RCD-based counterpart.",
author = "Shuyan Zhao and Reza Kheirollahi and Yao Wang and Hua Zhang and Fei Lu",
note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 2022 IEEE Transportation Electrification Conference and Expo, ITEC 2022 ; Conference date: 15-06-2022 Through 17-06-2022",
year = "2022",
doi = "10.1109/ITEC53557.2022.9813936",
language = "English (US)",
series = "2022 IEEE Transportation Electrification Conference and Expo, ITEC 2022",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "497--502",
booktitle = "2022 IEEE Transportation Electrification Conference and Expo, ITEC 2022",
address = "United States",
}