永磁直驱风力发电机滑模变结构直接功率控制

对永磁直驱风力发电机变流器脉宽调制策略及机侧控制模式进行了分析。提出滑模变结构永磁直驱风力发电机直接功率控制，结合风能最大功率跟踪控制策略定叶尖速比法和机组恒定气隙磁链控制设计滑模变结构直接功率控制器，其机侧脉宽调制开关频率恒定、无需同步旋转坐标变换及机端电压相位信息，能有效减小机侧变流器容量且控制结构简单，动态性能优良。仿真研究验证了所提理论分析方法和控制策略的正确性和有效性。

Direct Power Control for Sliding Mode Variable Structure of Permanent-magnet Direct Drive Wind Power Generator

This paper analyzes pulse width modulation strategy for converter of permanent-magnet direct drive wind powergenerator. It proposes direct power control for sliding mode variable structure of the permanent-magnet direct drive wind power generator , to combine maximum power of wind power energy to trace control strategy tip speed ratio and flux-weak- ening control to design direct power controller of which the unit side pulse width modulation switching frequency is perma- nent and there is no need to synchronously rotate transformation of coordinates and phase information of machine voltage. In addition, it is able t effectively reduce capacities of unit side converter by simple control structure with excellent dynamic per- formance. Simulation study verifies veracity and effectiveness of proposes theoretical analysis method and control strategy.