描述了永磁直驱风力发电机网侧变换器的基本结构和工作原理。对其数学模型进行了详细的推导，通过坐标变换得到其在dq旋转坐标系下的数学模型。通过基于前馈解耦和双闭环控制策略，实现了直流侧电压稳定、网侧功率因数可调的控制目标。通过空间矢量调制方式，提高了直流侧电压的利用率。对系统双闭环PI调节器的参数进行了设计。在MATLAB／SIMuLINK环境下建立了永磁直驱风力发电机网侧变换器的仿真模型，通过仿真对控制策略进行了验证。%The basic structure and working principle of the grid-side converter in the direct driven permanent magnet wind power generation system was described. The mathematical model was deduced detailedly. The mathematic model in two-phase synchronization coordinates was educed based on coordinates transform. The steady DC-side voltage and the power factor of grid- side in control were realized based on feed-forward decoupling and double-closed-loop control strategy. Through space vector modulation, the utilization of DC-side voltage was increased. The parameter of PI Controller in the two closed-loops was designed. In MAYLAB/SIMULINK, the simulation models were set up and the simulation results show that the control strategy is effect.
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