What is AC Drive?

- Feb 10, 2019-

Inverter (Variable-frequency Drive,vfd) is the application of frequency conversion technology and microelectronics technology, by changing the motor operating power frequency mode to control the AC motor power control equipment.


The inverter is mainly composed of rectifier (AC variable dc), filter, Inverter (DC change AC), braking unit, drive unit, detection unit micro-processing unit and so on. The inverter relies on the internal IGBT to adjust the voltage and frequency of the output power supply, according to the actual needs of the motor to provide its required power supply voltage, and then achieve the purpose of energy saving, speed regulation, in addition, the inverter also has a lot of protection functions, such as overcurrent, Overvoltage, overload protection and so on. With the increasing degree of industrial automation, the inverter has been widely used.