CHEN Chen, ZHANG Shu, XIONG Qi, ZHANG Xing jie

 

(College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China)

 

 

Abstract: Aiming at further improving the overall efficiency of the system in power factor correction(PFC) and to solve the power problem of harmonic pollution,a new high performance bridgeless PFC topology was proposed,the work of PFC circuit was analysised by DICM model and fuzzy PI algorithm was used to the simulation analysis and research, the experiments of bridgeless PFC circuit to achieve a variable speed compressor drive system power pre AC / DC function was setted up, a highly efficient driving scheme was proposed by using new bridgeless PFC applying to the brushless DC motor(BLDC) drive system and the simulation platform of simulink in Matlab was builded for digital simulation and theoretical research.The results indicate that by the new bridgeless PFC technology enables BLDC drive system reduces conduction losses arising from the corresponding switching device, in a certain output power improves the overall efficiency of the system and reduce the system input current harmonics interference with certain engineering application.

 

Key words: bridgeless; power factor correction; fuzzy PI; brushless DC motor(BLDC)