Motor control mode switching method and motor

• Main Authors: ZHANG PENGFEI, LIN DONGXUAN
• Format: Patent
• Language: Chinese; English
• Published: 17.11.2023
• 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 embodiment of the invention provides a motor control mode switching method and a motor. The switching method comprises the following steps: starting the motor in a first control mode; determining whether the rotating speed of the motor reaches the switching rotating speed; in response to the rotating speed of the motor reaching the switching rotating speed, determining a phase difference between a virtual coordinate system and an observer coordinate system, the virtual coordinate system being a coordinate system used in the first control mode; reducing the d-axis current of the virtual coordinate system in response to the fact that the phase difference is smaller than a phase threshold; and switching from the first control mode to the second control mode in response to the phase difference being equal to the phase threshold. 本公开的实施例提供一种电机控制模式的切换方法和电机。该切换方法包括：以第一控制模式启动电机；确定电机的转速是否达到切换转速；响应于电机的转速达到切换转速，确定虚拟坐标系与观测器坐标系的相位差，虚拟坐标系是第一控制模式所使用的坐标系；响应于相位差小于相位阈值，减小虚拟坐标系的d轴电流；以及响应于相位差等于相位阈值，从第一控制模式切换至第二控制模式。