| 电气双余度无刷直流电动机转子极弧系数研究 |
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| 引用本文： | 王巍,郭宏,李艳明,于凯平. 电气双余度无刷直流电动机转子极弧系数研究[J]. 电机与控制学报, 2009, 13(6) |
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| 作者姓名： | 王巍 郭宏 李艳明 于凯平 |
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| 作者单位： | 北京航空航天大学,自动化科学与电气工程学院,北京,100191 |
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| 摘 要： | 电气双余度是一种常见的无刷直流电动机(Brushless DC motor,BLDCM)的余度形式.极弧系数直接决定着电气双余度BLDCM的电动势(Electromotive force,EMF)的平顶宽度,而EMF波形对电气双余度BLDCM的电磁转矩波动有着直接的影响;并且极弧系数对电气双余度BLDCM的定位转矩也有着显著的影响.本文针对电气双余度BLDCM,研究了极弧系数对其转矩波动的影响.首先分析了由非理想EMF波形引起的电气双余度BLDCM电磁转矩波动;然后,采用电磁场有限元分析,计算和分析了极弧系数对电气双余度BLDCM的EMF波形和定位转矩的影响;进而得到了有助于减小各种转矩波动的极弧系数取值范围.最后通过示例的计算分析给出了电气双余度BLDCM极弧系数选取的参考方法.
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| 关 键 词： | 极弧系数 电气双余度 转矩波动 定位转矩 电机设计 |
Research on rotor pole-arc of electrical dual-redundancy brushless DC motor |
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| WANG Wei,GUO Hong,LI Yan-ming,YU Kai-ping. Research on rotor pole-arc of electrical dual-redundancy brushless DC motor[J]. Electric Machines and Control, 2009, 13(6) |
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| Authors: | WANG Wei GUO Hong LI Yan-ming YU Kai-ping |
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| Affiliation: | WANG Wei,GUO Hong,LI Yan-ming,YU Kai-ping (School of Automation Science , Electrical Engineering,Beijing University of Aeronautics , Astronautics,Beijing 100191,China) |
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| Abstract: | The effect of rotor pole-arc on the torque ripple is investigated in the electrical dual-redundancy BrushLess DC Motor(BLDCM),which redundancy structure is widely applied in the BLDCM.The pole-arc directly affects the flat top of the ElectoMotive Force(EMF) of the electrical dual-redundancy BLDCM,and the waveform of EMF is clearly relevant to the torque ripple of BLDCM.Moreover,the pole-arc has an obvious influence on the cogging torque.First,the electromagnetic torque ripple due to nonideal EMF was analyze... |
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| Keywords: | pole-arc electrical dual-redundancy torque ripple cogging torque electrical machine design |
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