| 线反电动势检测无刷直流电机转子位置方法 |
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| 引用本文： | 李自成,程善美,秦忆.线反电动势检测无刷直流电机转子位置方法[J].电机与控制学报,2010,14(12). |
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| 作者姓名： | 李自成 程善美 秦忆 |
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| 作者单位： | 武汉工程大学电气信息学院;华中科技大学控制科学与工程系; |
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| 摘 要： | 利用传统的反电动势过零检测原理,提出一种利用简化的线反电动势过零检测无刷直流电机转子位置方法,该方法通过实时测量无刷直流电机的任意两路线电压和两路相电流信号,并利用定子电阻参数进行实时简化计算,就可以得到三路线反电动势的过零时刻,从而实现无刷直流电机的无位置传感器控制.该方法结构简单、计算方便,不需要构造电机中点,也不需要进行相位延迟补偿,定子电阻变化对转子位置辨识的精确度影响较小.仿真和实验结果表明,提出的改进线反电动势过零检测方法可以在较宽的速度范围内对转子位置进行准确检测.
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| 关 键 词： | 反电动势 转子位置检测 无刷直流电机 电子换相 无传感器控制 |
Novel rotor position detection method of line back EMF for BLDCM |
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| LI Zi-cheng,CHENG Shan-mei,QIN Yi.Novel rotor position detection method of line back EMF for BLDCM[J].Electric Machines and Control,2010,14(12). |
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| Authors: | LI Zi-cheng CHENG Shan-mei QIN Yi |
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| Affiliation: | LI Zi-cheng1,CHENG Shan-mei2,QIN Yi2 (1.School of Electrical and Information Engineering,Wuhan Institute of Technology,Wuhan 430073,China,2.Department of Control Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | According to the sensing theory of traditional back electromotive force(EMF),a novel rotor position detection scheme was proposed for brushless DC motors(BLDCM) sensorless control based on the zero-crossing of simplified line back EMF.The points of zero-crossing of three line back EMFs are obtained from the calculation in real time by measuring two line voltages and two phase currents of BLDCM and utilizing the stator resistance.Based on this scheme,it is easy to realize sensorless control for BLDCM drives.... |
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| Keywords: | back electromotive force position measurement brushless DC motors electric commutation sensorless control |
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