A novel topology of LLC resonant inverter with two resonant tanks for Power Conditioning System

Recently, Power Conditioning System (PCS) tends to require more compact, higher efficiency, higher power density with better performance. To meet these requirements, a novel topology consisted of LLC resonant converter with two resonant tanks for low power losses and Low Frequency (LF) cyclo-converter for sine wave filtering is proposed. The operating schemes are analyzed and described. A 400W proto product is built, tested and verified the performances by connecting the 110Vac 60Hz utility line. Test results are described with its high efficiency and good performance.