永磁直驱风力发电系统机侧控制策略研究

The Research on Generator-Side Control Strategy of Permanent Magnet Direct Drive Wind Power Generator

最大功率跟踪一直是风力发电控制策略研究的热点和难点,本文首先介绍永磁直驱风力发电系统背靠背变流器的基本拓扑结构,然后在建立双Y移30°六相永磁同步发电机数学模型的基础上,基于id=0的转子磁场定向,设计了转速外环电流内环的双闭环控制器。通过监测风速变化实时调整电机转速,以达到最大风能捕获的目的。实验结果进一步验证了该控制策略的正确性与可行性。

MPPT with wind power generation has been focus and difficulty of control strategy.The topological structure of direct driven wind generation system with back-to-back PWM converter is firstly introduced in this paper.And then the mathematic model of dual Y shift 30°PMSG is found.Based on id=0 rotor field oriented control,Double-closed loop control of the outer-speed and the inner-current is designed.Adjusting the motor speed to achieve maximum wind power capture purposes by monitoring the wind speed in real time.experimental results further verify the correctness and feasibility of control strategy.