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间接利用定子、转子电流间的比例关系,分析转子电流和转子位置观测之间的关系,提出了一种基于PQ功率转子位置观测法的DFIG矢量控制策略,这种控制策略克服了其他速度观测方式在同步速运行时观测不准的缺陷,具有较宽广的运行范围,能够取得与有速度传感器控制相似的稳态性能。最后构建了DFIG仿真与实验平台,对所述无位置传感器控制策略进行了仿真与实验验证。仿真结果和试验结果证明了这个控制方法的正确性与有效性。
The relationship between rotor current and rotor position is indirectly analyzed by using the proportional relationship between stator current and rotor current. A DFIG vector control strategy based on PQ power rotor position observation is proposed. This control strategy overcomes other speed observation methods In the synchronous speed operation imperfections observed, with a wide range of operating, to obtain and have the speed sensor control similar to the steady-state performance. Finally, a DFIG simulation and experiment platform is constructed, and the control strategy of the sensorless is simulated and verified. The simulation results and experimental results prove the correctness and validity of this control method.