TY - GEN
T1 - A 4kV/100A DC Solid-State Circuit Breaker with Soft Turn-off Operation
AU - Kheirollahi, Reza
AU - Zhao, Shuyan
AU - Zan, Xin
AU - Zhang, Hua
AU - Lu, Xiaonan
AU - Avestruz, Al Thaddeus
AU - Lu, Fei
N1 - Funding Information:
The information, data, or work presented herein was funded in part by the Advanced Research Projects Agency-Energy (ARPA-E), U.S. Department of Energy, under Award Number DE-AR0001114 in the BREAKERS program monitored by Dr. Isik Kizilyalli. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.
Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - This paper deals with design and implementation of a practical 4 kV/100 A solid-state circuit breaker (SSCB) for medium voltage dc (MVDC) applications. Transient current commutation is applied to the main switch to achieve a soft turn-off during dc current interruption. The presented topology eliminates the transient power and energy on the main switch, leading to more reliability. A Boost converter-based resonant circuit is employed as the auxiliary branch to generate a countercurrent pulse to oppose the dc current in the main switch. The injected pulse current is adjustable in terms of duration and amplitude. Two capacitive couplers connect resonant circuits to the main switch and play a key role in preventing short circuit failures in the auxiliary branch. To verify the SSCB, two sets of experiments are conducted including load and short circuit interruptions under 4 kV dc bus. Experiments reveal 77 s reaction time interval in interrupting 100 A dc current, where the peak of the countercurrent pulse reaches 106 A. The main switch presents 42% voltage utilization rate, and it experiences 5.36 kV voltage peak overshoot; meanwhile, its power shock reduces to zero. The SSCB achieves 99.97% efficiency for the rated current of 100 A.
AB - This paper deals with design and implementation of a practical 4 kV/100 A solid-state circuit breaker (SSCB) for medium voltage dc (MVDC) applications. Transient current commutation is applied to the main switch to achieve a soft turn-off during dc current interruption. The presented topology eliminates the transient power and energy on the main switch, leading to more reliability. A Boost converter-based resonant circuit is employed as the auxiliary branch to generate a countercurrent pulse to oppose the dc current in the main switch. The injected pulse current is adjustable in terms of duration and amplitude. Two capacitive couplers connect resonant circuits to the main switch and play a key role in preventing short circuit failures in the auxiliary branch. To verify the SSCB, two sets of experiments are conducted including load and short circuit interruptions under 4 kV dc bus. Experiments reveal 77 s reaction time interval in interrupting 100 A dc current, where the peak of the countercurrent pulse reaches 106 A. The main switch presents 42% voltage utilization rate, and it experiences 5.36 kV voltage peak overshoot; meanwhile, its power shock reduces to zero. The SSCB achieves 99.97% efficiency for the rated current of 100 A.
UR - http://www.scopus.com/inward/record.url?scp=85134696312&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85134696312&partnerID=8YFLogxK
U2 - 10.1109/ITEC53557.2022.9813804
DO - 10.1109/ITEC53557.2022.9813804
M3 - Conference contribution
AN - SCOPUS:85134696312
T3 - 2022 IEEE Transportation Electrification Conference and Expo, ITEC 2022
SP - 1128
EP - 1133
BT - 2022 IEEE Transportation Electrification Conference and Expo, ITEC 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE Transportation Electrification Conference and Expo, ITEC 2022
Y2 - 15 June 2022 through 17 June 2022
ER -