Motor carrier frequency control method

• Main Authors: ZHANG GUOPING, PU GANG, ZHOU JIANGANG, XU HUI
• Format: Patent
• Language: Chinese; English
• Published: 03.01.2023
• 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 motor carrier frequency control method. Three boundary values are set to divide the working frequency of a motor into four sections; the highest carrier frequency of the motor is divided into four segments in an equally-divided mode to determine four carrier frequencies, each carrier frequency corresponds to one segment, when the motor works, the rotating speed of the motor is detected in real time, and the actual dominant frequency of the motor is determined according to the rotating speed of the motor; and determining an actual carrier frequency based on the section where the actual dominant frequency is located, and controlling the motor to switch from the current carrier frequency to the actual carrier frequency. According to the invention, the requirements of low-speed and low-carrier frequency and high-speed and high-carrier frequency can be met, and the problem caused by continuous change of the carrier frequency is avoided. 本发明公开了一种电机载波频率的控制方法，设定三个分界值将电机工作频率分为四个区段；将电机最高载频以均分的