直驱永磁风力发电机的控制策略研究

以直驱式永磁同步电机和变流器为对象,提出了电机侧变流器和电网侧变流器分开控制的控制方法。在电机侧采取基于最佳叶尖速比的最大风能跟踪可以在起动风速、额定风速和功率恒定三个区域最大限度地捕获风能。在电网侧采用直接功率控制策略,动态响应性能优异,算法本身也相对简单,实现了网侧功率因数恒定。系统基于MATLAB/Simulink软件的仿真波形和分析结果验证了所提出的控制策略的正确性。

Research on Control Strategy of Permanent Magnet Generator Direct-Driven by Wind Turbine

Taking the direct-drive permanent magnet synchronous motor and converters as the research objects,this paper presents a control method separating the motor-side converter from the grid-side converter.On the motor side,taking the optimum tip-speed ratio can track the maximum wind power in the regions of wind speed,rated wind speed and power invariability.On the grid side,using the direct power control strategy can perform high dynamic response.The algorithm itself is relatively simple to achieve a unit power...