Higher and Lower Power Single-Stage AC-DC Converters

In this paper, the properties of single-stage full-bridge converters are compared to those of single-stage forward converters. It is shown that, although both types of converters share similar properties, there are significant and surprising differences that have not been previously reported with respect to operating modes, DC bus voltage reduction techniques, and soft-switching. These differences are discussed in the paper, and conclusions about the properties of single-stage full-bridge converters are made based on results obtained from experimental prototypes