Unified Control of Multimode Operation for Paralleled Power Conversion System in Integrative Station
Cai Jiuqing, Chen Changsong, Duan Shanxu, Liu Peng
State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China
Abstract：Dealing with multimode operation of paralleled and bidirectional power conversion system (PCS) in EV charge-discharge-storage integrative station (CDSIS), this paper proposed a unified control strategy based on three-level centralized scheme. The operation mode of PCS module was flexibly selected between vehicle to grid (V2G) and stand-alone mode. Optimized allocation algorithms were developed for achieving state of charge (SOC) balancing of battery packs and apparent power balancing of PCS modules. Meanwhile, the induced mechanisms of voltage spikes and rush currents during transfer process were analyzed. Then a novel dual loop control strategy was proposed based on instruction tracking in inner loop and smooth switching in outer loop, to realize seamless transfer among operation modes. Simulation and experimental results have verified the proposed control strategy.
蔡久青, 陈昌松, 段善旭, 刘朋. 一体化电站并联功率变换系统多模式运行统一控制策略[J]. 电工技术学报, 2017, 32(10): 92-100.
Cai Jiuqing, Chen Changsong, Duan Shanxu, Liu Peng. Unified Control of Multimode Operation for Paralleled Power Conversion System in Integrative Station. Transactions of China Electrotechnical Society, 2017, 32(10): 92-100.
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2017, Vol. 32 
