Sensorless Control of Switched Reluctance Motors Based on Phase Inductance Model in Linear Regions
Sensorless Control of Switched Reluctance Motors Based on Phase Inductance Model in Linear Regions
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发表时间：
2012
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通讯作者：
Deng Zhiquan
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作者：
Deng Zhiquan
无位置传感器启动和低速运行是开关磁阻电机(SRM)的一个研究难点。本文考虑了开关磁阻电机(SRM)的静止、转轴和驱动三种运行方式。基于线性区域的相电感模型，提出了一种无位置传感器控制方法。该方法利用相电流斜率差的计算方法来辨识全周电感，根据电感特性提出电感比较逻辑来估计电感的线性区域。在线性区建立了位置-电感特性模型，用于估计转子的位置和速度信息，可用于无位置传感器的启动和驱动操作，实验结果验证了理论分析和方法的有效性。
Sensorless starting and low speed operation is a difficult research branch in switched reluctance motor(SRM).In this paper,the three modes such as the standstill,rotating shaft condition and the driving running condition are considered.A sensorless control method is presented in this paper,which is based on the phase inductance model in linear region.In this method,the phase current slope difference calculation method is utilized for identifying the full-cycle inductance;based on the inductance characteristics,the inductance comparison logics are proposed for estimating the inductance linear region;and in the linear region,the position vs.inductance characteristics are modeled for estimating the rotor position and speed information,which can be used for sensorless starting and driving operation without hesitation.The experimental results verify the theoretical analysis and its validity.