Electric motor, also known as a motor or motor, is an e […]
Electric motor, also known as a motor or motor, is an electrical device that converts electrical energy into mechanical energy and can use mechanical energy to generate kinetic energy to drive other devices. There are many types of motors, but they can be roughly classified into AC motors and DC motors for different applications.
The advantage of DC motor is that it is relatively simple in controlling the speed. It only needs to control the voltage to control the speed. However, such motors should not be operated in high temperature and flammable environments, and because the motor needs to use carbon brushes. The components of the current transducer (brushed motor), so it is necessary to periodically clean the dirt generated by the carbon brush friction. The brushless motor is called a brushless motor. Compared with the brushed brush, the brushless motor is quieter because it has less friction between the carbon brush and the shaft.
The production is more difficult and the price is higher. AC Motor can operate in high temperature, flammable environment, and does not need to clean the carbon brush dirt regularly, but it is difficult to control the speed, because controlling the AC motor speed needs to control the frequency of the AC (or use induction) The motor, by increasing the internal resistance, reduces the motor speed at the same AC frequency. Controlling its voltage only affects the torque of the motor. The voltage of general civil motors is 110V and 220V, and there are 380V or 440V types for industrial applications.