ISSN 1000-1026
CN 32-1180/TP
  • ISSN 1000-1026
  • CN 32-1180/TP

Citation: LIU Chang,CAI Xu,CHEN Qiang.Compound Balancing Control Strategy of SOC for Battery Energy Storage System Based on Cascaded H-bridge Converter[J].Automation of Electric Power Systems. DOI: 10.7500/AEPS20180917002 copy

Compound Balancing Control Strategy of SOC for Battery Energy Storage System Based on Cascaded H-bridge Converter

  • Received Date: September 17, 2018
    Accepted Date: December 26, 2018
    Available Online: 2019-03-14

  • Abstract:

        A novel compound SOC balancing control strategy combining injection of zero sequence voltage and negative sequence voltage is proposed to address the issue of state of charge (SOC) unbalance between phases in battery energy storage system based on cascaded H-bridge converter, which is on the basis of detailed analysis of the power model of the system. The output performance of the device, interphase SOC balancing capability and power quality are all taken into account in this compound SOC balancing control strategy. The process of SOC balancing can achieve smooth transition, so the strategy has no disturbance to the system. The experimental prototype is designed, constructed, and tested to verify the validity and effectiveness of the proposed compound SOC balancing control strategy. This work is supported by National Natural Science Foundation of China (No. 51677117) and State Grid Shanghai Municipal Electric Power Company (No. 18H100000203).

  • Keywords:

    cascaded H-bridge converter; battery energy storage system; compound SOC balancing control; zero sequence voltage; negative sequence voltage

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