To study the influence of the magnitude of the excitation current on the radial electromagnetic force wave of the tangential magnetizing parallel structure hybrid excitation synchronous motor (TMPS-HESM) under different working conditions. Firstly, the basic structure of the motor and the rotor magnetic circuit model is introduced. Secondly, considering the influence of excitation current, the Maxwell stress tensor method is used to analyze the radial electromagnetic force wave of the motor and the source, frequency and order of the radial electromagnetic force wave that has a great influence on the electromagnetic vibration of the motor are qualitatively obtained. Then, the three-dimensional finite element method is used to calculate the variation law of the radial electromagnetic force wave when different excitation currents are applied under no-load and load conditions, revealing that the DC excitation will increase the amplitude of the radial electromagnetic force wave of a specific order. Meanwhile, the influence of load torque variation on the radial electromagnetic force wave is discussed, and it is found that the (2f, 8) and (6f, 24) order electromagnetic force waves are greatly affected by the armature reaction. The work provides a theoretical basis for further suppressing the electromagnetic vibration of this type of hybrid excitation motor.

中文翻译：

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励磁电流对切向励磁并联结构混合励磁同步电机径向电磁力波的影响

研究不同工况下励磁电流大小对切向磁化并联结构混合励磁同步电机（TMPS-HESM）径向电磁力波的影响。首先介绍了电机的基本结构和转子磁路模型。其次，考虑励磁电流的影响，采用麦克斯韦应力张量法分析了电机的径向电磁力波以及对电机电磁振动影响较大的径向电磁力波的来源、频率和阶次。电机定性获得。然后，利用三维有限元方法计算了空载和负载条件下施加不同励磁电流时径向电磁力波的变化规律，揭示了直流励磁会增加径向电磁力的幅值特定顺序的波。同时讨论了负载转矩变化对径向电磁力波的影响，发现(2f，8)和(6f，24)阶电磁力波受电枢反应影响较大。该工作为进一步抑制该类型混合励磁电机的电磁振动提供了理论依据。