永磁同步风力发电机组控制策略的仿真研究

Simulation of Control Strategy of Wind Turbine with Permanent Magnet(PM) Generator

针对直驱式风电机组全功率变流器双PWM背靠背式的拓扑结构,利用Matlab/simulink软件平台,搭建了包括风力机、永磁同步发电机、变流器等组件的并网型永磁同步风力发电机组的系统仿真模型,并根据矢量控制原理对机组及背靠背式变流器进行了控制策略的仿真研究。仿真结果表明,所采用的结合最大风能捕获的矢量控制策略实现了风电机组的变速运行、最大风能利用和有功、无功的解耦控制;验证了所建立的永磁同步风力发电机组模型以及采用的控制策略的有效、可行性,对于实践具有重要的指导意义。

Aimed at the topology structure of back - to - back converter in a grid - connected wind turbine using a permanent magnet generator , a simulation model of which is build up based on the toolbox of Matlab/Simulink software. The vector control method is adopted to study the control strategy in the wind turbine and back - to - back converter. The simulation results show that controlled by the vector control method with maximum wind energy tracking principle, the wind turbine system realizes the varying speed operation, the maximum wind energy utilization and real and reactive power decoupling control. The wind turbine system model and control strategy simulated in this paper are effective and feasible in practice.