fault-tolerant control for a flexible group battery energy storage system based on cascaded multilevel converters
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ID: 206140
2018
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Abstract
A flexible group battery energy storage system (FGBESS) based on cascaded multilevel converters is attractive for renewable power generation applications because of its high modularity and high power quality. However, reliability is one of the most important issues and the system may suffer from great financial loss after fault occurs. In this paper, based on conventional fundamental phase shift compensation and third harmonic injection, a hybrid compensation fault-tolerant method is proposed to improve the post-fault performance in the FGBESS. By adjusting initial phase offset and amplitude of injected component, the optimal third harmonic injection is generated in an asymmetric system under each faulty operation. Meanwhile, the optimal redundancy solution under each fault condition is also elaborated comprehensively with a comparison of the presented three fault-tolerant strategies. This takes full advantage of battery utilization and minimizes the loss of energy capacity. Finally, the effectiveness and feasibility of the proposed methods are verified by results obtained from simulations and a 10 kW experimental platform.
| Reference Key |
song2018energiesfault-tolerant
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|---|---|
| Authors | ;Junhong Song;Weige Zhang;Hui Liang;Jiuchun Jiang;Wensong Yu |
| Journal | acs combinatorial science |
| Year | 2018 |
| DOI |
10.3390/en11010171
|
| URL | |
| Keywords | Keywords not found |
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