Totem-Pole PFC: An Optimized Bidirectional Converter for Compact Home Energy Systems
摘要
This paper presents a comparative study of bidirectional Power Factor Correction (PFC) converter architectures designed for Home Energy Management System (HEMS) applications. The objective of this study is to identify the most suitable topology in terms of efficiency and compactness, as well as the bidirectional operation, which is suitable for residential energy storage integration. Four electrical architectures were evaluated during this work through simulation and experimental validation with a focus on using wide bandgap (WBG) semiconductor devices. A comparative study is presented on two different WBG components with a focus on optimizing the overall efficiency under nominal operation. Experimental results confirmed the most suitable configuration for a 400 V DC battery system. The selected topology will be grid connected, allowing the battery to be charged during periods of low electricity prices or available green energy and to either inject the stored energy into the grid or use it for self-consumption when electricity prices are at high. These power converters help also regulate energy flow during peak demand periods while price fluctuations are largely due to the variability of energy sources supplying the grid.