DC fault current control of modular multilevel converter with SiC-based Power Electronics Building Blocks

2017 ◽  
Author(s):  
Jianghui Yu ◽  
Rolando Burgos ◽  
Niloofar Rashidi Mehrabadi ◽  
Dushan Boroyevich
Keyword(s):  
Power Electronics ◽  
Building Blocks ◽  
Current Control ◽  
Fault Current ◽  
Modular Multilevel Converter ◽  
Multilevel Converter ◽  
Dc Fault

A Review on DC Fault Current Blocking Capability of Modular Multilevel Converter

2021 ◽  
Author(s):  
Mekhla Sen ◽  
Madhu Singh ◽  
Pragati Thakur ◽  
Astha Vikram ◽  
Anjali Bhardwaj ◽  
...  
Keyword(s):  
Fault Current ◽  
Modular Multilevel Converter ◽  
Multilevel Converter ◽  
Dc Fault ◽  
Current Blocking

scholarly journals Appropriate Protection Scheme for DC Grid Based on the Half Bridge Modular Multilevel Converter System

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1837 ◽  
Author(s):  
Ho-Yun Lee ◽  
Mansoor Asif ◽  
Kyu-Hoon Park ◽  
Hyun-Min Mun ◽  
Bang-Wook Lee
Keyword(s):  
Energy Dissipation ◽  
Circuit Breaker ◽  
Fault Current ◽  
Modular Multilevel Converter ◽  
Fault Current Limiter ◽  
Operating Characteristics ◽  
Multilevel Converter ◽  
Protection Scheme ◽  
Dc Fault ◽  
Current Limiter

The half bridge (HB) modular multilevel converter (MMC) technology is considered a breakthrough to mitigate the shortcomings of the conventional voltage source converter (VSC) in high-voltage direct-current (HVDC) grid application. However, interruption of the DC fault is still a challenge due to fast di/dt and extremely high levels of DC fault current. The fault interruption using a DC circuit breaker (DCCB) causes enormous energy dissipation and voltage stress across the DCCB. Therefore, the use of a fault current limiter is essential, and the superconducting fault current limiter (SFCL) is the most promising choice. Past literature has focused on the operating characteristics of DCCB or limiting characteristics of the SFCL. However, there is little understanding about the fault interruption and system recovery characteristics considering both DCCB and SFCL. In this paper, we have presented a comparative study on fault interruption and system recovery characteristics considering three types of fault limiting devices in combination with circuit breaker. The transient analyses of AC and DC system have been performed, to suggest the most preferable protection scheme. It has been concluded that, amongst the three fault limiting devices, the Hybrid SFCL in combination with circuit breaker, delivers the most desirable performance in terms of interruption time, recovery time, energy dissipation and voltage transients.

Dynamic Model of the DC Fault Clearing Process of a Hybrid Modular Multilevel Converter Considering Commutations of the Fault Current

2020 ◽  
Vol 35 (7) ◽  
pp. 6668-6672
Author(s):  
Shukai Xu ◽  
Qiang Song ◽  
Yuebin Zhou ◽  
Jingwei Meng ◽  
Wenbo Yang ◽  
...  
Keyword(s):  
Dynamic Model ◽  
Fault Current ◽  
Modular Multilevel Converter ◽  
Multilevel Converter ◽  
Dc Fault
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