电工技术学报  2020, Vol. 35 Issue (14): 2987-2996    DOI: 10.19595/j.cnki.1000-6753.tces.200061
电机与电器 |
基于转子永磁体磁场定向的无刷直流电机转矩脉动抑制
李珍国, 孙启航, 王鹏磊, 邵淑敏, 贾清泉
燕山大学电力电子节能与传动控制河北省重点实验室 秦皇岛 066004
Torque Ripple Reduction of Brushless DC Motor Based on Rotor Permanent Magnet Field Orientation
Li Zhenguo, Sun Qihang, Wang Penglei, Shao Shumin, Jia Qingquan
Key Lab of Power Electronics for Energy Conservation and Motor Drive of Hebei Province Yanshan University Qinhuangdao 066004 China
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摘要 无刷直流电机由于非正弦的主磁场分布和反电动势波形,在方波电流驱动下产生较大转矩脉动。为此提出一种基于转子永磁体磁场定向的转矩脉动抑制方法。首先,通过分析无刷直流电机转子永磁体磁场定向dq同步旋转坐标系下的等效模型,得出该坐标系下d轴电枢反应和电磁转矩各自取决于dq轴电流的结果;其次,给出了以变换前后绕组产生的d轴电枢反应和电磁转矩不变为原则的三相电流和dq轴电流之间变换方法;最后,利用该变换方法,得到所需dq轴电流对应的三相电流,并对该电流进行闭环控制,进而实现无助磁和去磁的瞬时恒定转矩控制。所提方法通过Matlab仿真和DSP实验验证了其可行性和有效性。
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李珍国
孙启航
王鹏磊
邵淑敏
贾清泉
关键词 无刷直流电机转子永磁体磁场定向转矩脉动抑制d轴电枢反应    
Abstract:Due to the non-sinusoidal waveforms of main magnetic field distribution and back-EMF, there are large torque ripples in brushless DC motor under the driving with square wave current. Therefore, a torque control strategy to reduce torque ripple based on the rotor permanent magnet field orientation is proposed in this paper. Firstly, by analyzing the equivalent model for BLDCM rotor permanent magnet field orientation under d-q synchronous rotating coordinate system, it is shown that the armature reaction of d-axis and electromagnetic torque are determined by the current of d-axis and q-axis, respectively. Secondly, based on the principle that the d-axis armature reaction and the electromagnetic torque are unchanged after conversion, the transformation method between the three-phase current and the d- and q-axis currents is presented. Finally, the three-phase currents from the required d-axis and q-axis currents are obtained. These currents are regulated in closed loop form to realize the instantaneous constant torque control without magnetization and demagnetization. The test results obtained from Matlab simulation and DSP experiment show the feasibility and effectiveness of the proposed method.
Key wordsBrushless DC motor (BLDCM)    rotor permanent magnet field orientation    torque ripple reduction    d-axis armature reaction   
收稿日期: 2020-01-14     
PACS: TM351  
基金资助:国家自然科学基金(61873226)和河北省自然科学基金(E2017203320)资助项目
通讯作者: 李珍国 男,1973年生,博士,副教授,研究方向为电力电子与电力传动。E-mail: lzg@ysu.edu.cn   
作者简介: 孙启航 女,1997年生,硕士研究生,研究方向为电力电子与电力传动。E-mail: 1018525294@qq.com
引用本文:   
李珍国, 孙启航, 王鹏磊, 邵淑敏, 贾清泉. 基于转子永磁体磁场定向的无刷直流电机转矩脉动抑制[J]. 电工技术学报, 2020, 35(14): 2987-2996. Li Zhenguo, Sun Qihang, Wang Penglei, Shao Shumin, Jia Qingquan. Torque Ripple Reduction of Brushless DC Motor Based on Rotor Permanent Magnet Field Orientation. Transactions of China Electrotechnical Society, 2020, 35(14): 2987-2996.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.200061          https://dgjsxb.ces-transaction.com/CN/Y2020/V35/I14/2987