Conversion Circuit Design for High Efficiency Bridgeless Interleaved Power Factor Correction

摘要

Energy conservation is the world's most urgent work at present. This study focuses on the research and development of the AC-DC conversion circuit for variable frequency control, which is closely related to human life. It uses the bridgeless rectifier circuit, coupled with the Interleaved Boost and “PFC” (Power Factor Correction) technology to design a high-efficiency AC/DC conversion circuit, to provide a load of 400V, 2KW. The system efficiency can reach up to 96%. The power factor is close to 1, the input current ripple is below 0.8A and the output voltage ripple is below 6V. In addition to the application in variable- frequency control air-conditioning, the proposed system can also be used for a wide range of variable frequency control motors and DC electric motors, such as household fans, DC electronic fluorescent lamps, or variable- frequency control motors.