Apparatus And Method For Rotating-Sensorless Identification Of Equivalent Circuit Parameters Of An AC Synchronous Motor

摘要

Identification without shaft encoder of electrical equivalent circuit parameters of a three-phase asynchronous motor comprising: standstill position search of the rotor, so that the d flux axial direction of the rotor is aligned opposite theαaxial direction of the stator; test signal voltage supply U1d in the d flux axial direction of the motor whereby the q transverse axial direction remains without current; measuring signal current I1d of the d flux axial direction of the motor; identification of equivalent circuit parameters of the motor based on the test signal voltage U1d and on the measuring signal current I1d in the d flux axial direction; whereby the rotor remains torque-free. The method used to control electrical drives. An identification apparatus for a synchronous motor and a motor control device comprising the apparatus, whereby identified equivalent circuit parameters can be used to determine, optimize and monitor a motor control.