Speed sensing for the third harmonic stator voltage signal

Details Speed sensing for the third harmonic stator voltage signal Speed sensing for the third harmonic stator voltage signal

H - Electricity

02

K

H02K 29/06 (2006.01) G01P 3/48 (2006.01) H02P 6/06 (2006.01)

Patent

CA 2138836

ABSTRACT OF THE DISCLOSURE A method and system for sensing the rotor speed of a brushless permanent magnet motor wherein a signal containing isolated third harmonic components of the flux density is acquired, and the absolute values of the maximas of the signal are measured, the last measured absolute maxima representing the current rotor speed of the motor. 52

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