Inverter is a power control device that converts power supply into another frequency by the on-off action of power semiconductor devices. With the rapid development of modern power electronic technology and microelectronic technology, the high-voltage and high-power variable-frequency speed regulating device is becoming increasingly mature. In recent years, the high-voltage problem, which was always difficult to solve, has been well solved by means of device series or unit series.

The following is to share with you the development of inverter in high voltage:

With modern power electronic technology and the rapid development of the computer control technology to change, from different industries to promote the electric transmission, changes in technology also had the very big, the effect of the change in form of the ac (alternating current) has replaced the dc speed control, and digital control can better control has become the trend of development, for this area has changed a lot.

Inverter in the ac motor variable frequency speed regulation is a form of saving electricity, in order to be able to better to improve the effect of the production process, and demonstrated the significance of had the very big change, effect and can improve the quality of its products and improves the operation environment of a main method, the change of the frequency control of motor speed, with its high efficiency, high power factor, and the excellent speed and braking performance.

The previous high voltage frequency converter, by the silicon controlled rectifier, silicon controlled inverter and other components, many shortcomings, harmonic, have an impact on the power grid and motor. In recent years, the development of some new devices will change this situation, such as IGBT, IGCT, SGCT and so on. The high voltage inverter made up of them has excellent performance and can realize PWM inverter or even PWM rectifier. Not only has the harmonic small, the power factor also has the very large degree enhancement.

In the aspect of control to save the effect of this aspect, and in order to be able to better improve the production process, so in this aspect of the form of performance has a great significance, this is through this aspect to compare a form, so the effect of frequency conversion also has a greater change.

High voltage and high power frequency control device is widely used in large mining plants, petrochemical industry, municipal water supply, metallurgical steel, power and energy industries of various fans, pumps, compressors, rolling mill.