AC Motor Speed Controller
1. Introduction
AC motor controller is a kind of equipment used to control the operation of AC motor, which can adjust the speed, direction and running state of the motor. It is widely used in industrial production, transportation, household appliances and other fields. The details page will introduce the basic principle, control mode and application case of AC motor controller.
2. Principle
The basic principle of AC motor controller is to use electrical components and electronic equipment to regulate and control the motor. In the AC motor controller, it mainly includes three parts: power supply circuit, control circuit and motor drive circuit. Among them, the power supply circuit is used to provide stable power for the whole system; The control circuit realizes the control of the motor by detecting the running state of the motor; The motor drive circuit converts the control signal to the motor drive signal and controls the operation of the motor.
3. Control mode
Ac motor controller has a variety of control methods, common voltage control, frequency control and vector control.
1. Voltage control:
control the speed and torque of the motor by adjusting the input voltage of the motor. When the input voltage increases, the motor speed and torque will also increase; Conversely, when the input voltage is reduced, the speed and torque of the motor will also be reduced.
2. Frequency control:
By changing the frequency of the input voltage of the motor, the motor speed is controlled. In frequency control mode, the speed of the motor is proportional to the frequency of the input voltage.
3. Vector control:
Vector control is a more advanced control mode, through the independent control of the motor current and torque, to achieve accurate control of the motor. Vector control can not only control the speed and direction of the motor, but also realize the torque control of the motor, and improve the operating stability and response speed of the motor.
