Abstract：In order to increase the annual energy yield of variable-speed wind energy conversion system(WECS), maximum power point tracking control is usually required below rated wind velocity. However, most of the researches only paid their attention to the way to fasten the MPPT speed. In fact, the research of this paper find out that the faster the maximum power point tracking(MPPT) speed is, the larger the transient load the turbine shaft bears. Thus, attempts are firstly made in this paper to find out the relationship between the MPPT speed and the transient load the shaft bears through quantity analysis. Then, principle to design MPPT bandwidth is given out to optimize the transient load. To make the WECS can operate under the designed MPPT bandwidth, the design details on how to make the MPPT bandwidth constant is further given out in this paper. Finally, a 1.2kW variable-speed WECS is established in the laboratory. Theoretic analysis is verified by experimental results.
陈家伟,陈杰,龚春英. 变速风力发电系统瞬态载荷分析及其优化设计途径[J]. 电工技术学报, 2015, 30(4): 233-241.
Chen Jiawei,Chen Jie,Gong Chunying. Way to Optimally Design Transient Load of Variable-Speed Wind Energy Conversion System. Transactions of China Electrotechnical Society, 2015, 30(4): 233-241.
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