12 kV 1 kA Breaking Capable Modular Power Electronic Interrupter with Staged Turn-off Strategy for Medium Voltage DC Hybrid Circuit Breaker - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue IEEE Transactions on Industry Applications Année : 2022

12 kV 1 kA Breaking Capable Modular Power Electronic Interrupter with Staged Turn-off Strategy for Medium Voltage DC Hybrid Circuit Breaker

Résumé

The dc circuit breaker (DCCB) plays an important protection role in the dc distribution systems. Hybrid dc circuit breaker (HCB) offers low conduction losses and reasonably fast response times. In this paper, a high power density, modular and scalable power electronic interrupter (PEI) design is introduced for medium voltage (MV) HCB platforms. Following this concept, the single low-voltage (LV) module is first investigated in terms of the high pulse current ratio and the voltage clamping circuit. After the comparison and test among different devices, a compact module with 1.7 kV discrete IGBTs are selected as main switches. While the voltage clamping circuit is carefully designed to guarantee no tail current bump and sufficient turn-off voltage margin. Next the whole system with series modules is optimized on the aspects of the turn-off strategy, power supply structure and layout of modules. An improved staged turn-off scheme is proposed, which can not only reduce the peak current and total metal oxide varistor (MOV) energy, but also help balance the MOV energy distribution. A 12 kV and 1 kV breaking capable PEI was demonstrated based on the proposed PEI design, achieving a peak power density of 7.4 kW/cm3, much higher than the IGBT module-based solution. The breaking capability and effectiveness of the modular PEI is demonstrated in a 6 kV MVDC HCB device.
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Dates et versions

hal-03782551 , version 1 (21-09-2022)

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Jian Liu, Lakshmi Ravi, Cyril Buttay, Rolando Burgos, Steve Schmalz, et al.. 12 kV 1 kA Breaking Capable Modular Power Electronic Interrupter with Staged Turn-off Strategy for Medium Voltage DC Hybrid Circuit Breaker. IEEE Transactions on Industry Applications, 2022, 58 (5), pp.6343 - 6356. ⟨10.1109/TIA.2022.3185570⟩. ⟨hal-03782551⟩
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