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中文摘要：
针对转子侧功率变化频繁和直流母线电压波动剧烈的问题，设计了交流励磁变速恒频双馈风力发电系统的框架结构，进而对背靠背PWM变流器的控制策略进行了研究。建立了转子侧变流器控制模型，设计了基于定子电压定向（SVO）矢量控制的变速恒频双馈风力发电系统方案，构建系统模型并进行了仿真，仿真结果表明控制策略和技术的可行性，系统实现了有功功率、无功功率的解耦控制和最大风能跟踪控制。
英文摘要：
Taking consider of the problem for rotor side power and DC bus voltage change frequently volatile, a framework of AC excited VSCF doubly fed wind power generation system was designed. And control strategy of the back-to-back PWM converter was studied. A control model of the rotor side converter was established, and a system of VSCF doubly fed wind power generation based on the stator voltage orientation（SVO） vector control was designed. A simulation model of the system was built. The simulation results show that the feasibility of the control strategy and technique, and the system can realize the active power, reactive power decoupling control and maximum wind power tracking control.
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