Impact of Higher Current Harmonics on Component Current Stress and Conduction Losses of Half-Bridge-Series-Resonant-Converters in Discontinuous Conduction Mode for High-Power Applications

The half-bridge series resonant converter (HB-SRC) offers advantages with regard to power density compared to hard-switching topologies. To achieve soft-switching, the HB-SRC has to operate in discontinuous conduction mode (DCM). However, this operation influences component current waveforms and thus the component current stresses and losses in the converter, which are examined analytically and simulatively in this paper.