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. The inverter can adjust the voltage and frequency of the output power supply by switching the internal IGBT, and provide the required power supply voltage according to the actual needs of the motor, so as to achieve the purpose of energy saving and speed regulation.
Inverter also has many protection functions, such as overcurrent, overvoltage and overload protection. With the continuous improvement of industrial automation, frequency converters have been widely used.