The basic principle of frequency converter is the same. First, the input alternating current is changed into direct current, and then into alternating current with adjustable frequency and amplitude. The main electrical accessories of the system composed of frequency converters include switches, relays, frequency converters, potentiometers, etc. , depending on what function you want to implement.

Frequency conversion drive is a power control device that uses frequency conversion technology and microelectronics technology to control AC motor by changing the frequency mode of motor working power supply. The frequency converter is mainly composed of rectifier (AC to DC), filter, inverter (DC to AC), braking unit, driving unit, detection unit and microprocessor unit.