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Affiliations:
1:
Zhuzhou CRRC Times Semidonductor Co., Ltd , Zhuzhou , China ;
2:
CRRC Zhuzhou Electric Locomotive Institute Co., Ltd , Zhuzhou , China
Source: The 16th IET International Conference on AC and DC Power Transmission (ACDC 2020),
2021
p.
1735 – 1740
RB-IGCT, as a new type of gate controlled power electronic device, not only has the characteristics of high blocking voltage, large surge capacity, long-term short-circuit failure mode and so on, but also has the characteristics of forward and reverse blocking. This paper introduces the mechanism of 4.5kv RB-IGCT, the blocking characteristics, on state characteristics and switching characteristics of 4.5kv RB-IGCT are analyzed in detail. According to the test results, 4.5kv RB-IGCT device is a medium and high voltage switching device suitable for DC circuit breaker or current source converter. The effects of RC snubber and MOV parameters on the device performance are also described in this paper, the comparison test shows that reasonable configuration of RC and MOV parameters can improve the switching characteristics of the device.Finally, this paper introduces the design of the separated gate drive, so as to meet the system requirements of higher power, more efficient and more reliable.