Sensorless speed measurement of AC machines using analytic wavelet transform

Abstract:

A new method for 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 digital signal processor. 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.

Año de publicación:

2002

Keywords:

• Short-time Fourier transform
• Analytic wavelet transform
• Direct Torque Control
• Sensorless speed estimation
• AC machines

Fuente:

scopus

google