| 基于自举电路的开关磁阻电机初始位置估计方法 |
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| 引用本文： | 沈磊,吴建华,杨仕友. 基于自举电路的开关磁阻电机初始位置估计方法[J]. 中国电机工程学报, 2011, 0(6) |
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| 作者姓名： | 沈磊 吴建华 杨仕友 |
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| 作者单位： | 浙江大学电气工程学院; |
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| 摘 要： | 开关磁阻电机的转子必须与电机磁场保持同步才能保证电机的正常运行,因此对转子位置信息的准确检测非常重要。提出一种基于自举电路的开关磁阻电机初始位置估计方法,通过给自举电路中的电容充电,向各相绕组中注入诊断脉冲电流,根据各相诊断电流峰值和转子位置的关系,判断转子所在区间。该方法不依赖电机的具体电感模型,对控制系统带宽要求较低,无须电流闭环控制,检测过程不会造成电机转子的附加位移。阐述了利用自举电路检测开关磁阻电机初始位置的基本原理,给出了自举电路相关元件的选取原则,通过实验验证了所提出方法的有效性和实用性,并对引起误差的原因进行了分析。
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| 关 键 词： | 开关磁阻电机 自举电路 初始位置估计 无位置传感器控制 电流注入法 |
A Novel Estimation Method for Initial Position of Switched Reluctance Motor Based on Bootstrap Circuit |
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| SHEN Lei,WU Jianhua,YANG Shiyou. A Novel Estimation Method for Initial Position of Switched Reluctance Motor Based on Bootstrap Circuit[J]. Proceedings of the CSEE, 2011, 0(6) |
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| Authors: | SHEN Lei WU Jianhua YANG Shiyou |
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| Affiliation: | SHEN Lei,WU Jianhua,YANG Shiyou(College of Electrical Engineering,Zhejiang University,Hangzhou 310027,Zhejiang Province,China) |
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| Abstract: | For the switched reluctance motor(SRM) rotor must be synchronized with the motor magnetic field to ensure the normal operation of the motor,and therefore the accurate detection of rotor position is very important.A novel estimation method for the initial position of a switched reluctance motor was proposed.Based on this method,diagnostic pulse current was injected into the coil of each phase by charging the bootstrap capacitor;and according to the relationship between the peak amplitude of diagnostic pulse ... |
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| Keywords: | switched reluctance motor(SRM) bootstrap circuit initial position estimation sensorless control current injection method |
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