Small-Signal Analysis and Control of Soft-Switching Naturally Clamped Snubberless Current-Fed Half-Bridge DC/DC Converter

Koyelia Khatun; Vakacharla Venkata Ratnam; Akshay Kumar Rathore; Beeramangalla Lakshminarasaiah Narasimharaju

doi:10.3390/app10176130

Applied Sciences (Sep 2020)

Small-Signal Analysis and Control of Soft-Switching Naturally Clamped Snubberless Current-Fed Half-Bridge DC/DC Converter

Koyelia Khatun,
Vakacharla Venkata Ratnam,
Akshay Kumar Rathore,
Beeramangalla Lakshminarasaiah Narasimharaju

Affiliations

Koyelia Khatun: Department of Electrical and Computer Engineering, Gina Cody School of Engineering and Computer Science, SGW Campus, Concordia University, Montreal, QC H3G 1M8, Canada
Vakacharla Venkata Ratnam: Department of Electrical and Computer Engineering, Gina Cody School of Engineering and Computer Science, SGW Campus, Concordia University, Montreal, QC H3G 1M8, Canada
Akshay Kumar Rathore: Department of Electrical and Computer Engineering, Gina Cody School of Engineering and Computer Science, SGW Campus, Concordia University, Montreal, QC H3G 1M8, Canada
Beeramangalla Lakshminarasaiah Narasimharaju: Department of Electrical Engineering, National Institute of Technology, Warangal 506004, India

DOI: https://doi.org/10.3390/app10176130
Journal volume & issue: Vol. 10, no. 17
p. 6130

Abstract

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This paper presents small-signal analysis of a soft-switching naturally clamped snubberless isolated current-fed half-bridge (CFHB) DC-DC converter using state-space averaging. A two-loop average current controller was designed and implemented on a digital signal processor. The complete design procedure is presented here. Simulation results using software PSIM 11.1 are shown to validate the stability of the control system and the controller design. Experimental results for the step changes in load current vividly demonstrated satisfactory transient performance of the converter and validated the developed small-signal model and the control design.

Published in Applied Sciences

ISSN: 2076-3417 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Engineering (General). Civil engineering (General); Science: Biology (General); Science: Physics; Science: Chemistry
Website: http://www.mdpi.com/journal/applsci

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