励磁绕组在转子上的无滑环混合励磁电机研究

Research on Hybrid Excitation Motor of Excitation Windings on Rotor without Slip Ring

介绍了一种励磁绕组在转子上且无滑环的混合励磁同步电机,提出了励磁发电机转子绕组无需整流电路就可以输出直流电压的方法,构建了励磁发电机相应定子绕组输入电压的模型,并研究了其控制策略。实验结果表明,该电机结构可靠、有良好的调磁性能、励磁效率高,能实现低速大力矩与宽调速范围。

This paper presents a new kind of hybrid excitation synchronous motor in which the excitation windings are in the rotor and there is no slip ring. An method of obtaining DC voltage from the generator＇s rotor windings without rectifier is proposed after selecting a certain kind of input voltage of the generator＇s stator windings. The control strategy also has been studied in this paper. The experiment results show that the electric machine is of sturdy construction and easy to adjust the magnetic field. Further more,it has high excitation efficiency,wide speed range and high torque at low speed.