双定子绕组同步电机及其单绕组等效模型

Synchronous Motor With Dual Stator Winding and Its Single Winding Equivalent Model

双定子绕组同步电机有很多突出的优点,建立其数学模型,尤其是能与普通同步电机相类似的数学模型,对其控制和广泛应用具有很大的实用价值。本文首先借助电感参数统一计算公式和双d-q变换,求得了双绕组同步电机众多电感参数的表达式和d-q轴等效模型,取得与文献相同的结论。然后,运用戴维南定理将此模型进一步简化为单绕组模型,形式上与普通同步电机模型完全相同,从而可以借助普通同步电机许多成熟的研究成果,来简化双绕组同步电机的研究工作。最后,通过理论分析和仿真算例,证明了该等效模型的正确性。这一建模方法可推广到双绕组其他类型的交流机或更多相电机。

Dual stator winding synchronous motor （DSWSM） has many advantages, such as minor torque ripple, little magnetic flux harmonic. Developing DSWSM＇s mathematical model will benefit its control and application. The inductive parameters and models in the d-q circuit are derived firstly in the paper by a unified expression for calculating inductances of AC machines and double d-q transformations respectively. The results is the same as the one in reference. Then a single winding equivalent model for DSWSM is presented with Thevenin theorem, which make DSWSM work like a common synchronous motor. Finally, theoretical analysis and the simulation results validate the equivalent model. The modeling method can be applied in other type of dual winding motor and multiphase motor.