Frequency-Weighted Angle Compensator for Position Sensorless Permanent Magnet Synchronous Motor Control

An angle compensator is proposed on a basis of an angle estimation of a permanent magnet synchronous motor. The angle compensator consists of frequency weightings for a speed reference and an angle estimate. Frequency characteristics using a bandpass filter for the compensator are shown. The characteristics are discussed in a comparison with those using the other filters. The compensator gives a controlled angle from the speed reference and angle estimate even in high-frequency region. Numerical simulations and experimental results show tracking performance with an adequate use of the reference and reducing noise even in high-frequency region. (c) 2022 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.