电工技术学报  2019, Vol. 34 Issue (zk2): 474-483    DOI: 10.19595/j.cnki.1000-6753.tces.L80733
电机与电器 |
反凸极永磁同步电机弱磁特性分析
李春艳, 王豫, 孟涛
黑龙江大学机电工程学院 哈尔滨 150080
Research on Flux Weakening Characteristics of a Negative Salient Pole Permanent Magnet Synchronous Motor
Li Chunyan, Wang Yu, Meng Tao
School of Mechanical and Electrical Engineering Heilongjiang University Harbin 150080 China
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摘要 提出一种新型反凸极永磁同步电机,利用转子永磁体分段磁桥和调整铁心为直轴磁通提供路径从而实现直轴电感大于交轴电感。低速运行时采取正值的直轴电流控制产生正值的磁阻转矩,同时正向电流可有效提高永磁体的工作点。高转速运行电机可以使用相对较小的直轴弱磁电流来削弱气隙磁通,实现弱磁升速,有效扩大电机的弱磁范围。建立新型反凸极永磁同步电机的直交轴磁路模型,分析新型反凸极永磁同步电机电磁转矩特性和弱磁特性,并进行有限元分析。理论分析结果与仿真计算分析结果相吻合,验证了反凸极永磁同步电机弱磁的有效性和可行性。
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李春艳
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孟涛
关键词 反凸极永磁同步电机弱磁特性直轴和交轴电感调整铁心    
Abstract:A new negative salient pole permanent magnet synchronous motor(PMSM)was presented. The magnetic bridge between the adjacent segmental permanent magnet and adjusting iron core are used to provide the direct axis magnetic flux path. Therefore, the d-axis inductance is greater than the q-axis inductance. At low speed, positive d-axis current is adopted to control positive magnetic resistance torque, and positive d-axis current can effectively improve the working point of permanent magnet. At high speed, relatively small d-axis flux weakening current is used to weaken air gap flux and improve the flux weakening range of the motor effectively. The model of d-q-axis magnetic circuit for the new negative salient pole permanent magnet synchronous machine was established. The characteristics of electromagnetic torque and flux weakening of the new negative salient pole permanent magnet synchronous motor were analyzed, and the finite element analysis was carried out. The theoretical analysis results agree with the simulation results, which verify the validity and feasibility of the flux weakening of the negative salient pole permanent magnet synchronous motor.
Key wordsNegative salient pole permanent magnet synchronous motor    flux weakening    d-axis and q-axis inductance    adjusting iron core   
收稿日期: 2018-07-10      出版日期: 2020-01-02
PACS: TM351  
作者简介: 李春艳 女,1980年生,博士,副教授,硕士生导师,研究方向为新型特种永磁电机及其控制、永磁同步电机弱磁控制技术和直线电机系统技术。E-mail: lichunyanlmm@163.com(通信作者)王 豫 女,1992年生,硕士研究生,研究方向为特种永磁同步电机分析设计。E-mail: 2356070520@qq.com
引用本文:   
李春艳, 王豫, 孟涛. 反凸极永磁同步电机弱磁特性分析[J]. 电工技术学报, 2019, 34(zk2): 474-483. Li Chunyan, Wang Yu, Meng Tao. Research on Flux Weakening Characteristics of a Negative Salient Pole Permanent Magnet Synchronous Motor. Transactions of China Electrotechnical Society, 2019, 34(zk2): 474-483.
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