期刊名称：International Journal of Computer Technology and Applications
电子版ISSN：2229-6093
出版年度：2012
卷号：3
期号：6
页码：1881-1885
出版社：Technopark Publications
摘要：This paper presents a novel ac/dc converter based on a quasi-active power factor correction(PFC) scheme. The proposed ac-dc converter with power factor correction circuit combines power conversion characteristics of conventional fly back and boost converters. In The proposed circuit the auxiliary output of the main converter is connected between the rectified ac mains and the low-frequency filter capacitor. High frequency pulsating source is produced due to auxiliary winding. This is used for shaping the input current by lengthening the input current conduction angle. The power factor correction circuit is controlled by using PI controller. The single stage circuit has low total harmonic distortion (THD) of input current. It does not increase the voltage/current stress on the active switch used in the switching Converter due to PFC. Operating principle and simulation results of the proposed method are presented by using MATLAB simulink software.
