BLDC Motor

摘要

A BLDC motor, has a first sub-motor and a second sub-motor. The first and second sub-motors have independent input terminals and a common rotor, including a common output shaft. In a normal operating mode the two sub-motors operate together as one motor to output a normal operating power of the motor. In an emergency operating mode, when one sub-motor has become faulty and generates a braking torque, the normal sub-motor is operated to generate a torque to compensate for the braking torque produced by the faulty sub-motor.

主权项

1. A BLDC motor, comprising:
a first sub-motor and a second sub-motor, wherein the first sub-motor and the second sub-motor have independent input terminals and a common output shaft, a normal operating mode and an emergency operating mode are set for the first sub-motor and the second sub-motor; in the normal operating mode, the two sub-motors operate together as one motor to output a normal operating power of the brushless DC motor; and a normal sub-motor starts operating in the emergency operating mode when one of the two sub-motors becomes faulty and generates a braking torque, and a phase current waveform of the normal sub-motor in the emergency operating mode is different from a phase current waveform of the normal sub-motor in the normal operating mode.