Analysis and comparison of current control methods on bridgeless converter to improve power quality

Abstract

• Performance analysis of PFC control methods is presented for a bridgeless converter. • PIC, ASC and PCC methods are compared under continuous conduction mode (CCM). • Unity PF and lower THD of input current are obtained. • They are verified by simulations and experiments carried out on 600 W and 50 kHz. • The experiments performed in the laboratory under input voltage and load variation. In this paper, the performance analysis of power factor correction (PFC) current control methods is presented for a bridgeless converter operating under continuous conduction mode (CCM). The bridgeless converter has been proposed using proportional-integral control (PIC), average sliding control (ASC) and predictive current control (PCC) methods to obtain unity power factor (PF) and lower total harmonic distortion (THD) of input current. Several PFC methods have been developed to satisfy the international standards such as IEC 61000-3-2 and IEEE 519-1992 . The detailed steady-state theoretical analysis of the bridgeless converter is presented, which is verified by simulations and experiments carried out on 600 W and 50 kHz. The performance of the current control methods for the bridgeless converter is investigated by a Matlab/Simulink program. The experiments performed in the laboratory under input voltage and load variation ranges verify the theoretical and simulation studies. The control methods are programmed by the TMS320F2812 DSP microprocessor.