POSITION ESTIMATION OF PERMANENT MAGNET SYNCHRONOUS MACHINES THROUGH VIBRATION INDUCED SALIENCY

摘要

Technical solutions are described herein for position estimation of permanent magnet synchronous machines through vibration induced saliency. An example permanent magnet synchronous machine (PMSM) includes a motor control system to provide input command to the motor to cause a position of the motor to change. The PMSM further includes a motor position estimation module configured to estimate the position of the motor. The estimation includes measuring a current I_abc across the motor. The estimation further includes extracting a filtered current I_{abc_inj} at a predetermined frequency from the current I_abc. The estimation further includes estimating the position of the motor based on the filtered current I_{abc_inj}.