md480 huichuan technology inverter universal vector inverter 1.5 kw-630kw large heavy duty inverter

Variable-frequency Drive (VFD) is a power control device that uses variable-frequency technology and microelectronics to control AC motors by changing the working frequency of the motor's power supply. A VFD consists mainly of rectification (AC to DC), filtering, inversion (DC to AC), braking units, drive units, detection units, microprocessor units, and more. A VFD adjusts the output voltage and frequency by switching internal IGBTs, providing the motor with the required power voltage based on its actual needs, thereby achieving energy saving and speed regulation. In addition, VFDs have many protection functions, such as overcurrent, overvoltage, and overloading protection. As industrial automation levels continue to increase, VFDs have also gained very wide application.