Analysis of an interleaved zero‐voltage switching/zero current switching resonant converter with duty cycle control. Issue 2 (1st February 2013)

• Record Type: Journal Article
• Authors: Lin, Bor‐Ren; Cheng, Po‐Jen
• Is Part Of: IET power electronics. Volume 6:Issue 2(2013)
• Page Start: 374
• Page End: 382
• Publication Date: 2013-02-01
• Subjects: AC‐DC power convertors -- capacitors -- diodes -- losses -- PWM rectifiers -- switches -- switching convertors -- zero current switching -- zero voltage switching; interleaved zero‐voltage switching resonant converter -- zero current switching resonant converter -- duty cycle control -- interleaved series resonant converter -- fixed frequency pulse‐width modulation -- fixed frequency PWM -- load current sharing -- ripple current cancelation -- ZVS -- power switches -- ZCS -- rectifier diodes -- three‐level DC converters -- clamped diodes -- flying capacitor -- voltage stress -- DC bus voltage -- interleaved PWM scheme -- output current ripple reduction -- output capacitor size -- series resonant tank -- three‐level PWM converter -- active switches -- switching losses -- switching frequency -- scale‐down prototype; Power electronics -- Periodicals; 621.31705
• DOI: 10.1049/iet-pel.2012.0617
• Languages: English
• ISSNs: 1755-4535

Abstract

Abstract : An interleaved series resonant converter with fixed frequency pulse‐width modulation (PWM) is presented to achieve load current sharing, ripple current cancelation, zero‐voltage switching (ZVS) for power switches and zero‐current switching (ZCS) for rectifier diodes. Two three‐level DC converters with clamped diodes and flying capacitor are adopted to share load current. The voltage stress of power switches is clamped at one‐half of DC bus voltage. The interleaved PWM scheme is used to control two converters in order to reduce the output current ripple and size of output capacitor. The series resonant tank in three‐level PWM converter is adopted to realise ZVS turn‐on for all power switches andZCS for rectifier diodes. Thus, the switching losses of active switches are reduced and the reverse recovery losses of rectifier diodes are eliminated. The fixed frequency PWM operation is adopted to regulate output voltage, so that the drawback of a wide range of switching frequency in the conventional series resonant converters is overcome. Finally, experiments based on a scale‐down prototype are provided to verify the effectiveness of the proposed converter.