The series resonant ac-ac
converter proposed herein can process the frequency conversion without any
diode bridge rectifier (DBR), thereby reducing the relevant conduction power
losses.
In addition, power factor correction (PFC) can be naturally achieved by
the inductor-based boost half bridge (BHB) circuit with the non-smoothed dc
(NSDC)-link.
The operation principle together with a IH load power regulation
scheme is described, and the converter performances including ZVS operations
and PFC are demonstrated in an experiment with a 3.0kw–30 khz prototype by
comparing with the previously developed converter.
Finally, the feasibility of
the proposed ac-ac converter is evaluated from a practical point of view
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