Decoupling Control Strategy of Current-Source PWM Rectifier with Capacitive Load
Yi Yongxian1, Zhang Yu1, Li Minying2, Dong Peimeng1
1. School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China; 2. Guangdong Zhicheng Champion Group Co. Ltd. Dongguan 523718 China
Abstract：In the uninterruptible power supply (UPS) system, the bulk capacitors installed in the DC bus of current-source PWM rectifier (CSR) lead to a higher order of system model, which adds complexity in the system control. This paper establishes a model for CSR with the capacitive load under dq rotation coordinate. With the dq coordinate to the AC side capacity voltage vector, the proposed model is simplified into DC side model and AC side model, and then the independent control of DC side and AC side can be realized. This paper further proposes the state feedback control in DC side and the active damping control in AC side,which can eliminate the interaction between DC side and AC side. Thus decoupling control of DC side and AC side can be realized. Experimental results for 40kV·A UPS prototype verify the proposed control strategy.
易永仙, 张宇, 李民英, 董培萌. 电流源型PWM整流器带容性负载的解耦控制方法[J]. 电工技术学报, 2016, 31(4): 95-103.
Yi Yongxian, Zhang Yu, Li Minying, Dong Peimeng. Decoupling Control Strategy of Current-Source PWM Rectifier with Capacitive Load. Transactions of China Electrotechnical Society, 2016, 31(4): 95-103.
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