变速恒频风力发电用双PWM变换器的协调控制研究

摘要

Based on researching the traditional coordinator control strategy of grid side converter and machine side converter, the paper puts forward a progressive coordinator control strategy in order to improve response speed of grid side converter on machine side converter. And the active current dynamic differential value of grid side is introduced to DC bus voltage control, whereby, effectively raising the load response capability of grid side converter on machine side converter, and improving the fluctuation of DC control voltage. Simulation and practical experiments verify accuracy and feasibility of the coordinator control strategy.%在研究网侧变换器与机侧变换器的传统协调控制策略的基础上,为提高网侧变换器对机侧变换器的响应速度,提出了一种改进型协调控制策略.该协调控制策略将双馈电机转子侧有功电流动态微分值引入直流母线电压控制中.有效提高了网侧变换器对机侧变换器的负载响应能力,从而改善了直流母线电压的波动.仿真和实验验证了所提出的协调控制策略的正确性和可行性.