Research on Sensorless Control Technology of Dual-winding PMSM

This paper aims at various problems existing in the traditional position sensorless control technology. First, it makes a detailed classification and comparison of the existing position sensorless control technology, and analyzes the advantages and disadvantages of various control technologies; secondly, it focuses on the dual winding permanent magnet The synchronous motor uses the high-frequency signal injection method to detect the rotor position at zero speed. There is a problem of extra torque ripple. According to the special structure of the dual-winding permanent magnet synchronous motor, a new dual-channel high-frequency signal injection method is proposed to avoid The generation of extra torque ripples improves the stability of the system. The correctness and feasibility of the theory are verified by SIMULINK simulation.