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Back-EMF detection method

Author:qiwo motor Views:Close

2021-05-06 15:12

The winding back electromotive force of permanent magnet brushless DC motor contains rotor position information, so it is often used for sensorless control. The back electromotive force applied to sensorless control includes the reverse electromotive force of the motor and the third harmonic electromotive force. The application methods of the opposite electromotive force include: back-EMF zero-crossing method, back-EMF integration and reference voltage comparison method, back-EMF integration and phase-locked loop method, freewheeling diode method, etc.

  This article is taken from ------"Permanent Magnet Brushless DC Motor Technology"