直接功率控制在永磁直驱风电系统的应用

永磁直驱风力发电机具有多变量、非线性及强耦合的特点,因此系统的参数变化会对矢量控制产生影响。针对永磁直驱风电系统系统稳定性和动态性能的问题。本文提出直接功率控制策略,由此省去电流闭环环节,减少了坐标变换,简化控制算法以改善系统性能。通过Matlab/Simulink搭建直接功率控制仿真模型,对控制策略的可行性进行验证；采用DSP FPGA实现了所提出控制策略,并进行了相关实验。仿真和实验结果证明了控制策略的有效性。

The Application of Direct Power Control in Permanent Magnet Direct Driven Wind Power System

With the multi-variable, nonlinear and strong coupling features of the Permanent magnet direct driven wind turbines,the parameter vector control of the system would be influenced on the change of parameters of the system.Based on the analysis and reflection on the presently existing control strategies for the problem of direct-driven PMSG wind Turbines controlling,this article proposes a control method, namely, Direct Power Control which can eliminat the link of current loop, reduce the coordinate and simplifie the algorithm of control. This control method has been run in the simulat environment, which further verified the feasibility of this method. Furthermore, we built this improved method on DSP FPGA.The result apparently showed that this method is effective.