What is the main purpose of the inverter Which projects are generally used for

What is the main purpose of the inverter Which projects are generally used for

Inverter is a device that converts industrial frequency power (50Hz or 60Hz) into AC power of various frequencies to realize variable-speed operation of the motor. The control circuit completes the control of the main circuit, the rectifier circuit converts alternating current into direct current, the DC intermediate circuit smoothes and filters the output of the rectifier circuit, and the inverter circuit inverts the direct current into alternating current. For frequency converters such as vector control frequency converters that require a large number of calculations, sometimes a CPU for torque calculation and some corresponding circuits are needed.

　　 1. Rectifier, which is connected to a single-phase or three-phase AC power source to generate a pulsating DC voltage.

　　 2. The intermediate circuit has the following three functions:

　　A. Stabilize or smooth the pulsating DC voltage for use by the inverter.

　　B. Supply power to each control circuit through switching power supply.

　　C. Filtering or braking devices can be configured to improve the performance of the inverter.

　　3. Inverter, which converts a fixed DC voltage into an AC voltage of variable voltage and frequency.

　　 4. The control circuit, which transmits the signal to the rectifier, intermediate circuit and inverter, and at the same time it also receives the signal from these parts. Its main components are: output drive circuit, operation control circuit. The main functions are:

　　A. Use signals to switch the semiconductor devices of the inverter.

　　B. Provide various control signals for operating the inverter.

　　C. Monitor the working status of the inverter and provide protection functions.