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| Simulation of Compensator With Cascade H-Bridge Inverter Based on High Frequency Isolated Converters |
| Huang Yao, Jia Pengyu, Liu Jianqiang, Zheng Qionglin |
| Beijing Jiaotong University Beijing 100044 China |
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Abstract A new compensator with cascade H-bridge inverter is proposed in this paper. Comparing with traditional compensator based on wye-connected cascade inverters used in three-phase three-wire high voltage system, the new topology conquers the difficulty of compensating negative-sequence current and makes the energy exchange between phase and phase by bringing in a three-port bi-directional converter with a three windings high frequency transformer. And it can also be applied in three-phase four-wire system. DC-link voltage pulsation can be weaken in this topology. It can compensate negative-sequence current, reactive and harmonic current by proper controlling strategy. Simulation results of different loads verify the feasibility of the topology.
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Received: 11 October 2010
Published: 07 March 2014
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2011, Vol. 26 
