基于四桥臂的三次谐波注入式永磁同步电机转矩密度优化

微特电机 ›› 2021, Vol. 49 ›› Issue (1): 1-4.

• 理论研究 • 下一篇

基于四桥臂的三次谐波注入式永磁同步电机转矩密度优化

马嘉杰, 孙培德

东华大学信息科学与技术学院,上海 201600

收稿日期:2020-10-22 出版日期:2021-01-28 发布日期:2021-01-25
作者简介:马嘉杰(1995—),男,硕士研究生,研究方向为电机矢量控制。

Torque Density Optimization of Third Harmonic Injection Permanent Magnet Synchronous Motor Based on Four-Leg

MA Jia-jie, SUN Pei-de

School of Information Science and Technology, Donghua University, Shanghai 201600, China

Received:2020-10-22 Online:2021-01-28 Published:2021-01-25

摘要/Abstract

摘要： 与传统绕组星形连接的永磁同步电机相比,基于四桥臂拓扑的永磁同步电机绕组中性点与第四桥臂相连接,为三次谐波电流提供通道,通过外部注入三次谐波电流,可提高电机的电磁转矩。建立三相四桥臂永磁同步电机系统的数学模型,并设计了矢量控制系统,在相电流幅值不变的前提下注入三次谐波电流,分别实现对基波和三次谐波的闭环控制,得到谐波注入后转矩密度显著提高,通过仿真验证了该方案的可行性。

关键词: 三相四桥臂, 矢量控制, 三次谐波注入, 转矩密度

Abstract: Compared with the traditional PMSM with the star-connection winding, the winding neutral point of PMSM based on the four-leg topology was connected with the fourth leg, which provided a channel for the third harmonic current. The electromagnetic torque of the motor could be improved by the external injection of the third harmonic current. The mathematical model of the three-phase four-leg permanent magnet synchronous motor system was established, and a vector control system was designed, third harmonic current was amplituded on the premise of constant phase current, the closed-loop control of fundamental wave and third harmonic were achieved respectively, torque density was increased significantly after the harmonic injection, the feasibility of the scheme was verified by simulation.

Key words: three-phase four-leg, vector control, third harmonic injection, torque density

中图分类号:

TM464

马嘉杰, 孙培德. 基于四桥臂的三次谐波注入式永磁同步电机转矩密度优化[J]. 微特电机, 2021, 49(1): 1-4.

MA Jia-jie, SUN Pei-de. Torque Density Optimization of Third Harmonic Injection Permanent Magnet Synchronous Motor Based on Four-Leg[J]. Small & Special Electrical Machines, 2021, 49(1): 1-4.

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基于四桥臂的三次谐波注入式永磁同步电机转矩密度优化

Torque Density Optimization of Third Harmonic Injection Permanent Magnet Synchronous Motor Based on Four-Leg

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