Abstract
Conventional single phase DC/AC converters require a large amount of electrolytic capacitors to absorb the pulsating power on DC bus. Power decoupling technologies are very effective in reducing the capacitance and hence improve the reliability. This paper introduces three kinds of decoupling circuits, compares their filter capacitor sizing by performing detailed power flow and storage energy analysis. Loss analyses are also performed to estimate the overall efficiency. © 2014 IEEE.