Health management of brushless direct current motor controller

Brushless direct current motor (BLDCM) is a typical mechatronics product, and its health management is an important basis to ensure the normal operation of BLDCM. This paper studied the system architecture, operation principle and health management scheme of BLDCM controller, through the design of DC bus over-voltage and under-voltage protection circuit, bus over-current protection circuit, over-temperature protection circuit, Hall signal disorder protection circuit, control software and human-machine interface. The state monitoring and fault protection of 270V/28V power supply, communication function, motor speed, controller temperature, bus current and motor rotor position are realized, which provides a certain technical support for the health management of BLDCM.