Passivity-Based Combined Controller Design for Wind Power Applications
Wang Peng1,Wang Haisong1,Zhang Jianwen1,2,Cai Xu1,2,Han Zhengzhi3
1. Wind Power Research Center Shanghai Jiao Tong University 200240 China 2. State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University 200240 China 3. Power Electronics Experiment Center Shanghai Jiao Tong University 200240 China
Abstract：In order to improve the dynamic response of wind power converters,this paper presents a design scheme of a combined controller based on passivity control theory. The main idea of proposed method is that the machine-side converter and the grid-side converter are considered together. The overall mathematical model is established for the linked converter system firstly. Then,the controller is designed for error tracking system by using passivity theory. For achieving no static errors and improving the robustness of the control system,the speed and DC voltage PI regulators are used together with passivity-based current controllers. Besides,the equilibrium points of the system are also optimized to achieve a fast dynamic response by analyzing the system dynamics. Finally,results of hardware-in-the-loop(HIL) experiment are given to verify that the proposed method has good steady state and dynamic state performances.
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2014, Vol. 29 
