Noise reduction method and system for motor control

• Main Authors: CAI JUN, JIA HONGYUN, CAO YONGJUAN, ZHANG LI
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2024
• 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 relates to the technical field of motor noise reduction, in particular to a noise reduction method and system for motor control, and the method comprises the steps: S1, obtaining a noise value of a motor; s2, comparing the obtained noise value with a noise preset value; s3, if the obtained noise value is greater than the noise preset value, controlling to improve the carrier frequency of the motor; s4, repeating the steps S1 to S3 until the obtained noise value is smaller than or equal to the noise preset value; and in the process of improving the carrier frequency, the carrier frequency of the motor is controlled not to exceed the preset adjustable range. The noise value of the motor is adjusted by continuously adjusting the carrier frequency of the motor, the noise of the motor is reduced as much as possible on the premise that the working performance of the motor is guaranteed, and compared with an adjusting mode of shielding the rotating speed, the motor can meet the design requirement more