直驱式永磁风力发电机软并网与功率调节的控制集成

为实现直驱式永磁同步风力发电机无冲击并网与风能最大跟踪控制, 设计了一种软并网与功率调节一体化的控制集成装置. 基于广义功角特性, 提出了一种对逆变器输出功率进行直接控制, 从而实现最大风能跟踪的控制策略. 新的控制策略可使发电机的转速按所期待的动态运动, 因而具有良好的静态与动态性能. 另外, 该控制律中对电机参数具有很强的鲁棒性, 因而该控制器能适应各种不同参数的同步风力发电机, 成为同步风力发电并网与功率调节的独立装置.

Integrated control of soft cut-in and power regulation for direct-drive permanent magnet wind turbine generator

Connecting grid with no-impact and tracking the maximum wind energy, an integrated control system of soft cut-in and power regulation is designed in this paper. Based on generalized power angle characteristics, a new control scheme is proposed to control the output power of the inverter directly to realize the maximum wind energy tracking. The proposed control strategy can govern the rotor speed of generator, and make the rotor speed dynamics to track the desired rotation, thus the control strategy has excellent static and transient performances. On the other hand, the proposed control law is also robust to the generator parameters, the integrated controller is thus applicable to different synchronous wind turbine generator. In fact, the controller is a separate device for connecting grid and regulating power of synchronous wind turbine generator.