Ultrafast Solid-State Circuit Breakers: Protecting Converter-Based ac and dc Microgrids Against Short Circuit Faults [Technology Leaders]

2016 ◽  
Vol 4 (2) ◽  
pp. 72-70 ◽  
Author(s):  
Z. John Shen
Keyword(s):  
Solid State ◽  
Short Circuit ◽  
Circuit Breakers ◽  
Dc Microgrids ◽  
Solid State Circuit ◽  
Technology Leaders

Coordination of Ultrafast Solid-State Circuit Breakers in Radial DC Microgrids

2021 ◽  
pp. 1-1
Author(s):  
Reza Kheirollahi ◽  
Shuyan Zhao ◽  
Hua Zhang ◽  
Xiaonan Lu ◽  
Jun Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Circuit Breakers ◽  
Dc Microgrids ◽  
Solid State Circuit

scholarly journals A Digital-Controlled SiC-Based Solid State Circuit Breaker with Soft Switch-Off Method for DC Power System

Electronics ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 837 ◽  
Author(s):  
Qin ◽  
Mo ◽  
Xun ◽  
Zhang ◽  
Dong
Keyword(s):  
Solid State ◽  
Field Effect Transistors ◽  
Cooling System ◽  
Short Circuit ◽  
Circuit Breaker ◽  
Short Circuit Current ◽  
Oxide Semiconductor ◽  
Circuit Breakers ◽  
Solid State Circuit ◽  
Protection Method

Due to the lower on-state resistance, direct current (DC) solid state circuit breakers (SSCBs) based on silicon-carbide (SiC) metal-oxide-semiconductor field-effect transistors (MOSFETs) can reduce on-state losses and the investment of the cooling system when compared to breakers based on silicon (Si) MOSFETs. However, SiC MOSFETs, with smaller die area and higher current density, lead to weaker short-circuit ability, shorter short-circuit withstand time and higher protection requirements. To improve the reliability and short-circuit capability of SiC-based DC solid state circuit breakers, the short-circuit fault mechanisms of Si MOSFETs and SiC MOSFETs are revealed. Combined with the desaturation detection (DESAT), a “soft turn-off” short-circuit protection method based on source parasitic inductor is proposed. When the DESAT protection is activated, the “soft turn-off” method can protect the MOSFET against short-circuit and overcurrent. The proposed SSCB, combined with the flexibility of the DSP, has the μs-scale ultrafast response time to overcurrent detection. Finally, the effectiveness of the proposed method is validated by the experimental platform. The method can reduce the voltage stress of the power device, and it can also suppress the short-circuit current.

A Review of Solid-State Circuit Breakers

2021 ◽  
Vol 36 (1) ◽  
pp. 364-377
Author(s):  
Rostan Rodrigues ◽  
Yu Du ◽  
Antonello Antoniazzi ◽  
Pietro Cairoli
Keyword(s):  
Solid State ◽  
Circuit Breakers ◽  
Solid State Circuit
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