Highly Efficient Asymmetrical PWM Full-Bridge Converter for Renewable Energy Sources

This paper presents a highly efficient asymmetrical pulse-width modulated (APWM) full-bridge converter for renewable energy sources. The proposed converter adopts full-bridge topology and asymmetric control scheme to achieve the zero-voltage switching (ZVS) turn-on of the power switches of the prima...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2016-05, Vol.63 (5), p.2945-2953
Main Authors: Cha, Woo-Jun, Kwon, Jung-Min, Kwon, Bong-Hwan
Format: Article
Language:English
Subjects:
asymmetrical PWM
Asymmetry
Capacitors
Circuits
Control systems
Converters
Diodes
Electric potential
Full-bridge converter
Inductance
Pulse duration modulation
Renewable energy sources
soft switching
Stress
Switching
Voltage
Zero current switching
Zero voltage switching
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Summary:This paper presents a highly efficient asymmetrical pulse-width modulated (APWM) full-bridge converter for renewable energy sources. The proposed converter adopts full-bridge topology and asymmetric control scheme to achieve the zero-voltage switching (ZVS) turn-on of the power switches of the primary side and to reduce the circulating current loss. Moreover, the resonant circuit composed of the leakage inductance of the transformer and the blocking capacitor provides the zero-current switching (ZCS) turn-off for the output diode without the help of any auxiliary circuits. Thus, the reverse recovery problem of the output diode is eliminated. In addition, voltage stresses of the power switches are clamped to the input voltage. Due to these characteristics, the proposed converter has the structure to minimize power losses. It is especially beneficial to the renewable energy conversion systems. To confirm the theoretical analysis and validity of the proposed converter, a 400 W prototype is implemented with the input voltage range from 40 to 80 V.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2015.2510500