Variable frequency air conditioner refers to a conventional air conditioner equipped with a frequency converter. The host of the variable frequency air conditioner automatically performs stepless speed change. After rectifying and filtering the 50HZ current in the power grid, it obtains a DC power of about 310V. After inverting this DC power, it can obtain a variable frequency power supply used to control the operation of the compressor, which converts the grid frequency from 50Hz to 30-130 Hz. Compared to fixed frequency air conditioners, the advantages of variable frequency air conditioners are reflected in energy conservation, low noise, high temperature control accuracy, and low voltage requirements.

By utilizing the Trench Field Stop theory of IGBT technology and adopting high-density device structure design and advanced ultra-thin chip processing technology, a new generation of Trench FS IGBT series products is launched. This series of products significantly reduces device saturation voltage drop and turn off loss by optimizing carrier injection efficiency and carrier distribution, thereby reducing device power consumption and improving system efficiency.