--> Introduction to Motor Controller: Working Principle-Shandong Aoke Electrical Technology Co., Ltd
News

News

The company focuses on the research and manufacturing of products in the fields of electrical automation, intelligence, and unmanned systems.

Introduction to Motor Controller: Working Principle

Release time:

2022-11-08

Source:

Author:

The motor controller, as the control center of the entire braking system, consists of two parts: the inverter and the controller. The inverter receives direct current energy from the battery and converts it into three-phase alternating current to provide power to the car motor. The controller receives feedback signals such as motor speed to the instrument. When braking or acceleration occurs, the controller controls the frequency of the frequency converter to increase or decrease, thereby achieving the purpose of acceleration or deceleration.
Electric vehicle motor controller, what are the types of motor controllers - Classification of motor controllers
Introduction to Motor Controllers: Classification
1. DC motor drive system
Motor controllers generally adopt pulse width modulation (PWM) chopper control method, which is simple, mature, and low-cost in control technology, but has disadvantages such as low efficiency and large size.
2. Communication induction motor drive system
The motor controller adopts PWM method to achieve power conversion from high-voltage DC to three-phase AC, uses frequency conversion speed regulation method to achieve motor speed regulation, and adopts vector control or direct torque control strategy to achieve fast response of motor torque control.
3. Communication permanent magnet motor drive system
Including sine wave permanent magnet synchronous motor drive system and trapezoidal wave brushless DC motor drive system, the sine wave permanent magnet synchronous motor controller uses PWM to achieve power conversion from high-voltage DC to three-phase AC, and uses frequency conversion speed regulation to achieve motor speed regulation;
4. Switched Reluctance Motor Drive System
The motor control of the switched reluctance motor drive system generally adopts the fuzzy sliding mode control method.