What is a motor controller?

What is a motor controller?

For the definition of the motor controller, the official explanation is that it is an integrated circuit that actively controls the motor to work according to the set direction, speed, angle，and response time. In electric vehicles, the function of the motor controller is to convert the electrical energy stored in the power battery into the electrical energy required to drive the motor according to gear, throttle, brake and other instructions to control the electric vehicle's starting operation, climbing strength, etc. status.

Based on different research purposes, there are many types of motors. At present, the electric motors of electric vehicles are basically AC motors. The current mainstream motors for mainstream vehicles are permanent magnet AC motors, which have three characteristics: one is the simple structure, safe and reliable in operation; the other is the small size of the motor and the weight comparison Light, low power consumption and high working efficiency; Third, the shape and size of the motor are flexible and diverse. The motor controller is composed of an inverter and a controller. Among them, the inverter receives the DC power sent from the battery and converts it into three-phase AC to provide power to the motor of the car. Secondly, the controller receives the motor speed and other signals and feeds it back to the meter. When braking or acceleration occurs, the controller controls the inverter The frequency rises and falls to achieve the purpose of acceleration or deceleration.