Control Strategy of Permanent Magnet Direct Driven Wind Generation System Based on Hybrid Clamp Dual PWN Rectifier
Cao Haiyang1,2 Shen Jianhui1,3 Jiang Zijian1 Liu Wen3
1 School of Information and Electrical Engineering China University of Mining and TechnologyXuzhou 221000 China 2 Jiangsu Xuzhou Engineering Experiment Center Xuzhou 221000 China 3 Huaian Power Supply Corporation Huaian 223001 China
Abstract：For the high power dual three-level permanent magnet direct-driven wind generation system, a novel hybrid clamped three-level inverter topology is adopted and its operational principle is analyzed. The impact characteristics of 64 voltage space vectors on the neutral point potential and the clamping capacitor voltage are analyzed respectively in the cases of feed-in and feed-out state to achieve the neutral point potential balance control strategy. On the basis of the clamping capacitor’s charging and discharging circuits, different level state switching methods are used to control the clamping capacitor voltage balance in the case of feed-in and feed-out states. Based on the mathematical model of the permanent magnet synchronous generator (PMSG) and the hybrid clamped converter, the separation control strategies of the converter by the machine side and the grid-side converter are proposed respectively. The simulation model is built based on Matlab/Simulink. The control strategy is verified to be correct and have good static and dynamic properties.
曹海洋,沈建辉,姜子健,刘稳. 基于双混合钳位式变流器的永磁直驱风力发电系统控制策略[J]. 电工技术学报, 2016, 31(11): 32-40.
Cao Haiyang Shen Jianhui Jiang Zijian Liu Wen. Control Strategy of Permanent Magnet Direct Driven Wind Generation System Based on Hybrid Clamp Dual PWN Rectifier. Transactions of China Electrotechnical Society, 2016, 31(11): 32-40.
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2016, Vol. 31 
