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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Design and Finite Element Analysis of a Novel Reverse Salient Pole Permanent Magnet Synchronous Motor
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Design and Finite Element Analysis of a Novel Reverse Salient Pole Permanent Magnet Synchronous Motor

机译：新型反凸极永磁同步电动机的设计与有限元分析

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摘要

Since traditional permanent magnet synchronous motor (PMSM) with salient pole effect has a lower d- than q-axis inductance, the maximum torque has a power angle higher than 90 degrees, which poses threat to demagnetization when the motor runs under load. To solve the problem, a novel PMSM with reverse salient pole is designed and optimized to realize the characteristic of L-d > L-q in this paper. Firstly, the electromagnetic design of reverse salient pole PMSM is carried out, followed by finite element analysis (FEA) of traditional PMSM and reverse salient pole PMSM. The simulation results show that air-gap flux density and no-load back EMF of reverse salient pole PMSM is closer to sinusoidal wave compared with the traditional PMSM. The danger of permanent magnet demagnetization is reduced due to L-d > L-q. In addition, reverse salient pole PMSM improves the maximum torque and overload capacity and has less loss and higher efficiency in steady-state operation. Finally, the optimal design of reverse salient pole PMSM is carried out. From the comparison of the simulation results, the optimized structure is superior to reverse salient pole PMSM in these performances, which shows that the design is reasonable.
机译：由于传统的具有凸极效应的永磁同步电动机（PMSM）的d轴电感比q轴电感低，因此最大转矩的功率角大于90度，这在电动机在负载下运行时会造成退磁的威胁。针对这一问题，本文设计并优化了一种新型的具有反凸极的永磁同步电机，以实现L-d> L-q的特性。首先，进行了反凸极永磁同步电动机的电磁设计，然后对传统的PMSM和反凸极永磁同步电动机进行了有限元分析（FEA）。仿真结果表明，与传统永磁同步电动机相比，反凸极永磁同步电动机的气隙通量密度和空载反电动势更接近正弦波。由于L-d> L-q，减少了永磁体退磁的危险。此外，反向凸极PMSM改善了最大扭矩和过载能力，并在稳态工作时具有较小的损耗和较高的效率。最后，对反凸极PMSM进行了优化设计。从仿真结果的比较来看，优化的结构在这些性能上均优于反凸极PMSM，这表明设计是合理的。

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