Analysis of the hybrid arm modular multilevel converter in dc-fault blocking state and post-fault condition

被引：0
|
作者：
Iman-Eini, Hossein [1 ,2 ]
Liserre, Marco [1 ]
机构：
[1] Christian Albrechts Univ Kiel, Chair Power Elect, Kiel, Germany
[2] Univ Tehran, Sch ECE, Coll Engn, Tehran, Iran
来源：
2018 20TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'18 ECCE EUROPE) | 2018年
关键词：
Fault handling strategy; Fault ride-through; HVDC; Multilevel converters; Reactive power;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A hybrid arm MMC with half-bridge arms close to the grounding pole and full-bridge arms away from the grounding pole is studied. Different operating modes of the converter in dc fault blocking state are explained. For each operating mode, the differential equation of fault current is derived. Then, the sufficient condition for blocking the fault current is extracted. Also, a mathematical formula is introduced for the estimation of maximum blocking time. Finally, the STATCOM operation in the fault period and smooth voltage build-up capability of the hybrid arm MMC are explained. All theoretical claims and the converter behavior are verified by simulations.
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页数：10
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