A Single-Stage AC/DC Converter With High Power Factor, Regulated Bus Voltage, and Output Voltage

Unlike existing single-stage AC/DC converters with uncontrolled intermediate bus voltage, a new single-stage AC/DC converter achieving power factor correction (PFC), intermediate bus voltage output regulation, and output voltage regulation is proposed. The converter is formed by integrating a boost...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2008-01, Vol.23 (1), p.218-228
Main Authors: Lu, D.D.-C., Iu, H.H.-C., Pjevalica, V.
Format: Article
Language:English
Subjects:
ac/dc converter
Alternating current
Applied sciences
Buses (vehicles)
Capacitors
Circuit properties
Circuits
Connection and protection apparatus
Control
Converters
Convertors
Costs
DC-DC power converters
Direct current
Electric converters
Electric currents
Electric potential
Electric, optical and optoelectronic circuits
Electrical engineering. Electrical power engineering
Electrical machines
Electronic circuits
Electronics
Exact sciences and technology
Experiments
Power electronics, power supplies
Power factor correction
Reactive power
Signal convertors
single-stage
Stress
Switches
Switching circuits
Switching converters
Voltage
Voltage control
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Summary:Unlike existing single-stage AC/DC converters with uncontrolled intermediate bus voltage, a new single-stage AC/DC converter achieving power factor correction (PFC), intermediate bus voltage output regulation, and output voltage regulation is proposed. The converter is formed by integrating a boost PFC converter with a two-switch clamped flyback converter into a single power stage circuit. The current stress of the main power switch is reduced due to separated conduction period of the two source currents flowing through the power switch. A dual-loop current mode controller is proposed to achieve PFC, and ensure independent bus voltage and output voltage regulations. Experimental results on a 24-V/100-W hardware prototype are given to confirm the theoretical analysis and performance of the proposed converter.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2007.911787