双馈风力发电机无速度传感器矢量控制

针对风力发电系统中的双馈电机提出一种转子感应电势定向矢量控制方法。通过调节双馈电机转子侧的瞬时有功电流和无功电流，实现对电机力矩和转子侧励磁电流的调节，进而实现双馈电机无功功率调节。在控制过程中只需检测交流侧电流电压，不需要位置传感器，所以可以应用无速度传感器。最终通过仿真试验证明该方法的正确性和实用性。

Speed sensorless vector control of doubly fed wind power generator

In wind power system, a vector control strategy using rotor induct electric potential orientation for doubly fed generator was proposed. Through adjusting instantaneous active current and inactive current of the rotor, the generator moment and excitation current of the rotor can be adjusted. According to the control strategy, the current and the volt of the AC side are needed to be detected and the position sensor is unnecessary, so speed sensorless can be used. Then the inactive power of generator can be adjusted. Experimental simulation result prove the correctness and practicability.