A novel single-stage off-line converter with PFC, fast output voltage regulation and reduced switching frequency range

A single-stage LC resonant AC/DC converter with fast output voltage regulation and PFC is described. Variable switching frequency control is used to regulate the output voltage. A new control method is introduced whereby the duty cycle is varied to regulate the output voltage at lighter loads. This...

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Bibliographic Details
Main Authors: O'Sullivan, D.L, Egan, M.G, Willers, M.J
Format: Conference Proceeding
Language:English
Subjects:
Control of electric power systems
Frequency control
Power convertors and power supplies to apparatus
Voltage control
Online Access:Get full text
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Summary:A single-stage LC resonant AC/DC converter with fast output voltage regulation and PFC is described. Variable switching frequency control is used to regulate the output voltage. A new control method is introduced whereby the duty cycle is varied to regulate the output voltage at lighter loads. This enables a drastic reduction in the switching frequency range. Experimental results from a 5 V, 20 A prototype are presented.
DOI:10.1049/cp:20000260