Permanent magnet synchronous motor cogging torque ripple suppression method and storage medium

• Main Authors: CHEN QINGYING, HUANG TAO, ZHANG CHI, SHU XINDONG
• Format: Patent
• Language: Chinese; English
• Published: 14.03.2023
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention discloses a permanent magnet synchronous motor cogging torque ripple suppression method and a storage medium. The method comprises the steps that a high-gain proportional position controller is adopted, stepping operation of a motor is controlled based on the position of the motor, cogging torque ripples in the position range of the motor and influence factors are collected in advance through position feedback of a high-precision encoder, collected data are processed and then added to an FOC vector control algorithm, and the FOC vector control algorithm is obtained. Pre-compensation is carried out on the cogging torque ripple of the motor by adjusting the PWM duty ratio, so that suppression of the cogging torque ripple of the permanent magnet synchronous motor is realized. Compared with the prior art, the design and manufacturing cost and complexity of the motor can be reduced, the cogging torque of the motor can be weakened according to the requirements of different working conditions, the util