A novel double air-gaps permanent magnet vernier synchronous motor (PMVSM) is proposed in this article. Because of the unique slotted structure of the outer stator, the motor has the characteristics of low speed and large torque. The rotating magnetic field of the inner and outer double air gaps simultaneously drags the rotor to move. The parameterized outer stator slotted double air-gaps PMVSM has a 22.5% higher torque than the same structure single air-gap motor. Use a magnetic field analytical calculation to analyze the motor. By establishing the Laplace and Poisson equations, the general solution and the relevant coefficients in the analytical solution of each part of the motor are solved. The parametric study of the outer stator slot angle $\gamma $ and the inner stator notch angle $\beta $ increases the torque and reduces the torque ripple. The comparison between the analytical calculation results and the finite-element method (FEM) results confirms the effectiveness of the magnetic field analytical calculation and parametric study.

中文翻译：

---

新型双气隙永磁游标同步电机的磁场解析计算

本文提出了一种新型双气隙永磁游标同步电机（PMVSM）。由于外定子独特的开槽结构，电机具有低速、大扭矩的特点。内外双气隙的旋转磁场同时拖动转子运动。参数化外定子开槽双气隙PMVSM的扭矩比相同结构的单气隙电机高22.5%。使用磁场分析计算来分析电机。通过建立拉普拉斯方程和泊松方程，求解电机各部分解析解中的通解和相关系数。外定子槽角的参数研究 $\伽马$ 和内定子缺口角 $\beta $ 增加转矩并减少转矩脉动。解析计算结果与有限元法 (FEM) 结果之间的比较证实了磁场解析计算和参数研究的有效性。