A control method and device of a dual three-phase permanent magnet synchronous motor

Abstract

The application discloses a control method and device of a double three-phase permanent magnet synchronous motor. The direct-axis current, the cross-axis current, the direct-axis voltage and the cross-axis voltage of the double three-phase permanent magnet synchronous motor are acquired, and then the acquired direct-axis current, cross-axis current, direct-axis voltage and cross-axis voltage are input into a model reference adaptive algorithm model to obtain the rotating speed and the rotor position output by the model reference adaptive algorithm model. Finally, the rotating speed and the rotor position are used to control the double three-phase permanent magnet synchronous motor. The compensator included in the model reference adaptive algorithm model is determined based on a forward path transfer function being strictly positive real. The model reference adaptive algorithm model can ensure stability to a certain extent, the obtained rotating speed and rotor position are relatively accurate, and thus accurate control of the double three-phase permanent magnet synchronous motor is realized.

Images