| Abstract |
In the literature, several AC/DC converters are studied and presented. All kinds of topologies and
techniques are covered under this topic. This includes single-switch, half-bridge and full bridge
topologies as well as hard, quasi-resonant and resonant switching. Different techniques are also
developed to control these converters ensuring high power factor. The aim of this paper is to present
a low-cost solution for low-power applications. A high frequency AC to DC converter that respects
the EN 6100-3-2 standard and suitable for applications in the power range of 300 W, is presented. Its
topology is based on full-bridge series-resonant converter that operates below the half of resonant
frequency. The converter features zero-current for both turn-on and turn-off and reduces switchingcurrent
for the output rectifier. These advantages make the series-resonant topology suitable for
operation at high frequency. Thus, electromagnetic integration of the LCT network (Inductor-
Capacitor-Transformer) will be successfully applied owing to the fact that the values of the inductor
and capacitor are relatively small at this range of frequency. Computer simulation and experimental
results are presented. |
