Abstract
The single-phase PFC converters are used for a lot of applications, such as air conditioners, heat pumps, etc. Its application range is expected to expand such as battery charger for EVs, PHEVs and home strages. However, the single-phase PFC converter has output voltage ripple caused by supply power ripple. It is a one of demerit of single-phase PFC converters. Then the authors proposed a ripple reducing control method which can apply to buck, buck-boost and series-type buck/boost converters. The converters are required to more improve conversion efficiency, cost and size. However, as far as the authors know, there has been no example of comparing the switching losses in these converters. Therefore, in this paper, the authors describe a comparison of the switching losses in three type converters with a simple analysis and computer simulation.
