Where is frequency converter used?

2021-11-03 10:33:06 jact_elec

Where is frequency converter used?

The frequency converter is mainly composed of rectifier (AC to DC), filtering, inverter (DC to AC), braking unit, drive unit, detection unit and micro-processing unit. The Vector inverter adjusts the voltage and frequency of the output power supply by switching on and off the internal IGBT, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the Vector inverter has many protection functions. , Such as overcurrent, overvoltage, overload protection and so on. With the continuous improvement of industrial automation, Vector inverter has also been widely used.

A typical Vector inverter system mainly includes the operation panel, VFD controller, motor and other parts.

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The typical structure mainly includes: control platform, measuring circuit, power circuit, protection circuit, etc. There are two types of common frequency converters: voltage type and current type. Among them, the power inverter part mostly uses power tubes such as IGBT and IGCT.

Typical algorithm: Among them, the control algorithm represented by Siemens is mainly based on coordinate transformation (vector control). Friends who are interested in the algorithm represented by ABB can search for information and obtain it by themselves (direct torque control), which will not be repeated here.

Vector inverter, (vector control): Many chip MCU, MPU manufacturers have given out the block diagram and algorithm library of frequency conversion vector control, and those who are interested can study and study.

Jact-high efficiency inverter supplier, focusing on the production of frequency converters, produces frequency converters at low prices and good quality. In addition, it is also an inverter Sales agent. The manufacturer is large in scale and rich in experience. If necessary, please contact us.