Basic introduction to electric motors

Anqing Dongqin Electronic Technology Co., Ltd. specializes in the production and development of camera autofocus motor, the following Xiaobian to bring you the basic introduction of electric motors.

An electric motor, also known as a motor or electric motor, is an electrical device that converts electrical energy into mechanical energy, which can then be used to generate kinetic energy that can be used to drive other devices. There are many kinds of motors, but they can be roughly divided into AC motors and DC motors for different occasions.

The advantage of DC motor is relatively simple in speed control, only need to control the size of the voltage can control the speed, but this kind of motor should not be operated in high temperature, flammable and other environments, and because the motor needs to use carbon brush as a part of the current converter, so the need to regularly clean the dirt generated by brush friction. Brushless motors are called brushless motors. Compared with brushless motors, brushless motors save electricity and are quieter because of less friction between carbon brushes and shafts. Production difficulty is higher, the price is also higher. Ac motor can operate in high temperature, flammable and other environments, and do not need to regularly clean the carbon brush dirt, but it is difficult to control the speed, because the control of AC motor speed needs to control the frequency of AC (or use induction motor, by increasing the internal resistance, reduce the motor speed at the same frequency of AC). Controlling its voltage will only affect the torque of the motor. General civil motor voltage of 110V and 220V two, in industrial applications there are 380V or 440V and other types.