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A Sensorless Rotor Position Detection Method for Permanent Synchronous Motors Based on High-Frequency Square Wave

Anran Song1,2, Zilong Feng2,3, Bo Huang2,3

  • 1School of Mechanical and Electrical Engineering, Suqian University, Suqian 223800, China.

Sensors (Basel, Switzerland)
|January 10, 2026
PubMed
Summary

This study introduces a harmonic voltage compensation strategy using a sixth-order quasi-proportional resonant (QPR) controller to reduce torque ripple and speed fluctuations in interior permanent magnet synchronous motors (IPMSM) sensorless control.

Keywords:
IPMSMharmonic voltage compensationhigh-frequency square-wave injectionmultiple coordinate systemssixth-order quasi-proportional resonant

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