A Novel Switch Current Stress Reduction Technique for Single Switch Boost-Flyback Integrated High Step Up DC-DC Converter

This paper presents a novel switch current stress reduction technique for a single switch boost-flyback high step up dc-dc converter. Coupled inductor-based converters do not have a sufficiently higher inductance value of their windings. This creates current surge during transient and steady state,...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2019-09, Vol.66 (9), p.6876-6886
Main Authors: Choudhury, Tanmoy Roy, Nayak, Byamakesh, Santra, Subhendu Bikash
Format: Article
Language:English
Subjects:
Boost-flyback converter
Capacitors
Coils (windings)
Computer simulation
Converters
coupled inductor
current stress reduction
Discharges (electric)
Electronics
Inductance
Inductors
Reduction
Steady state
Stress
Switches
Windings
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Summary:This paper presents a novel switch current stress reduction technique for a single switch boost-flyback high step up dc-dc converter. Coupled inductor-based converters do not have a sufficiently higher inductance value of their windings. This creates current surge during transient and steady state, which in turn increases current stress at main switch. To compensate this difficulty in coupled inductor-based boost flyback converter, an inductor-diode parallel combination has been connected in series with the switch. This technique increases the effective inductance of the coupled inductor primary winding during switch turn- on operation and helps to reduce current stress. Steady-state operating principle with the proposed technique is analyzed in continuous conduction mode. The current reduction technique is discussed with a proper mathematical derivation. To verify theoretical findings, simulation study is carried out in MATLAB/Simulink R2014b. Finally, a laboratory-based 40-W prototype converter is designed to show the effectiveness of the proposed switch current reduction technique.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2018.2880665