Bộ biến tần tần số cao chuyển đổi dòng điện một chiều điện áp thấp thành dòng điện xoay chiều điện áp thấp tần số cao thông qua công nghệ chuyển đổi DC / AC tần số cao, and then boosts the voltage through a high-frequency transformer, and then rectifies it into a high-voltage usually above 300V through a high-frequency rectifier and filter circuit. Direct current, and finally obtain 220V power frequency AC power for the load through the power frequency inverter circuit. Advantages and disadvantages of high-frequency inverters: High-frequency inverters use high-frequency magnetic core materials with small size and light weight, which greatly improves the power density of the circuit, making the no-load loss of the inverter power supply very small, and the inverse Transformation efficiency has been improved.

Usually the peak conversion efficiency of high-frequency inverters reaches more than 90%. Tuy nhiên, it also has significant disadvantages. The high-frequency inverter cannot be connected to a full-load inductive load, and the overload capacity is poor.