Variable Frequency Drives are primarily composed of rectification (AC to DC), filtering, inversion (DC to AC), braking units, driving units, detection units, and micro-processing units. These drives adjust the output voltage and frequency by switching the internal IGBTs, providing the required power voltage to the motor based on its actual needs, thereby achieving energy saving and speed regulation. Additionally, Variable Frequency Drives offer numerous protective functions, such as overcurrent, overvoltage, and overload protection. With the continuous increase in industrial automation, Variable Frequency Drives have found widespread application.