single-stage power-factor-corrected
converter topologies are reviewed in this paper. The topologies
discussed in the paper are related to ac–dc and ac–ac converters
that are classified on the basis of the frequency of the input ac
source, the presence of a dc-link capacitor, and the type of control
used (resonant or pulsewidth modulation). The general operating
principles and strengths and weaknesses of the converters, which
the authors have investigated over the last decade, are discussed in
detail, and their suitability in practical applications is stated. Considering
practical design constraints, it is possible to effectively
employ many single-stage converter topologies in a wide range of
applications.