Control of position sensorless for permanent magnet toroidal motor

Abstract

Based on the analysis of the structure and driving mechanism of the permanent magnet toroidal motor, the inductance of the motor was analyzed and calculated, the mathematical model was established. Based on the advantages of position sensorless control, the position sensorless control model based on model reference adaptive system(MRAS) applied for permanent magnet toroidal motor was designed, the simulation of control system was established. The simulation results show that the motor speed and the position angular of the planet carrier rotor error based on MRAS are small, the control system based on MRAS can estimate the planet carrier rotor angular speed accurately, and the control method is effective.

Keywords

• permanent magnet toroidal motor
• mathematical model
• position sensorless control
• MRAS