What frequency converter is it?

Inverter does not refer to a specific brand or type of inverter. Is the English name of frequency converter.

Well-known brands mainly include Delta, An Chuan An Chuan, Mitsubishi, Emerson, Siemens, Schneider Schneider and Fuji Electric. These will be written on the relevant trademarks of the frequency converter.

A device that converts direct current (DC) into alternating current (AC). The general composition is as follows:

1. Rectifier unit: converts AC power with fixed working frequency into DC power.

2. Large-capacity capacitor: storing the converted electric energy.

3. Inverter: an electronic switch consisting of a high-power switching transistor array, which converts direct current into square waves with different frequencies, widths and amplitudes.

4. Controller: Work according to the set program, control the amplitude and pulse width of the output square wave, so that it can be superimposed into alternating current which is similar to sine wave to drive the AC motor.

Extended data:

The background of frequency conversion technology is the wide demand of stepless speed regulation of AC motor. The application of traditional DC speed regulation technology is limited because of its large volume and high failure rate.

Since 1960s, thyristors and their upgraded products have been widely used in power electronic devices. But its speed regulation performance is far from meeting the needs. From 65438 to 0968, high-tech enterprises represented by Danfoss began mass production of inverters, which opened a new era of inverter industrialization.

Since 1970s, the research on pulse width modulation (PWM-VVVF) has made a breakthrough. Since 1980s, the improvement of microprocessor technology has made it easy to realize various optimization algorithms.

In the middle and late 1980s, VVVF frequency conversion technology in developed countries such as the United States, Japan, Germany and Britain was put into practice, and the products were put into the market and widely used. The earliest inverter was probably developed by the Japanese who bought a British patent. However, the United States and Germany quickly seized the high-end product market by virtue of the advantages of electronic component production and electronic technology.

After entering the 2 1 century, domestic frequency converters have gradually risen and now they have gradually seized the high-end market. Shanghai and Shenzhen stock markets have become the forefront of the development of domestic frequency converters, and a number of well-known domestic frequency converters such as Huichuan frequency converter, Infineon frequency converter, Anbangxin frequency converter and Ourui frequency converter have emerged. Anbangxin Inverter was founded in 1998, and it is one of the earliest inverter manufacturers in China. For more than ten years, Ambon people have supported their growth with rich cultural background. The enterprise passed the TUV ISO9000 quality system certification earlier, and was rated as "National High-tech Enterprise" and "Top Ten Domestic Brands of Inverter User Satisfaction in China" for many years.

References:

Baidu encyclopedia-frequency converter

Baidu encyclopedia-inverter

Baidu encyclopedia-variable frequency drive