Sensorless speed measurement of AC machines using analytic wavelet transform

J. Aller, T. Habetler, R. Harley, R. Tallam, S.B. Lee
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引用次数: 69

Abstract

A new method for the sensorless speed estimation of AC machines, using the analytic wavelet transform of the stator current signal, is proposed for a direct torque control drive. A comparison with results obtained using the short time Fourier transform is included. The proposed method can be implemented in real time on a DSP. The time-frequency resolution obtained and the computation time required by the proposed algorithm are improved in comparison to existing techniques, and the method can be applied over the entire speed range.
基于解析小波变换的交流电机无传感器转速测量
针对直接转矩控制电机,提出了一种利用定子电流信号的解析小波变换进行交流电机无传感器转速估计的新方法。并与短时傅里叶变换的结果进行了比较。该方法可以在DSP上实时实现。与现有算法相比,该算法获得的时频分辨率和所需的计算时间得到了提高,并且该方法可以在整个速度范围内应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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