A variable frequency drive (VFD) is a power control device that uses variable frequency technology and microelectronic technology to control the AC motor by changing the frequency of the motor's working power. The inverter is mainly composed of rectification (AC to DC), filtering, inverter (DC to AC), braking unit, driving unit, and detection unit micro-processing unit. The inverter relies on the opening and closing of the internal IGBT to adjust the voltage and frequency of the output power, and provides the required power voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the inverter also has many protection functions , Such as overcurrent, overvoltage, overload protection and so on. With the continuous improvement of industrial automation, inverters have also been widely used.
Choosing a suitable inverter will protect our spindle, otherwise it will damage our electric spindle