Implementation of soft-switching bidirectional flyback converter without auxiliary switch
- Author(s): Majid Delshad 1 ; Nasrin Asadi Madiseh 2 ; Mohammad Reza Amini 1
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View affiliations
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Affiliations:
1:
Department of Electrical Engineering, Khorasgan Branch, Islamic Azad University, Isfahan, Iran;
2: Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Isfahan, Iran
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Affiliations:
1:
Department of Electrical Engineering, Khorasgan Branch, Islamic Azad University, Isfahan, Iran;
- Source:
Volume 6, Issue 9,
November 2013,
p.
1884 – 1891
DOI: 10.1049/iet-pel.2012.0472 , Print ISSN 1755-4535, Online ISSN 1755-4543
© The Institution of Engineering and Technology
Received
22/02/2012,
Accepted
22/07/2013,
Revised
11/06/2013,
Published
A new bidirectional flyback converter is introduced in this study. To provide soft-switching condition, two identical auxiliary circuits are applied to both sides of the converter, without using any extra switches. These circuits do not impose high voltage or current stresses on the converter. To transfer the power in each direction, only one switch is gated through pulse-width modulation technique. So, the control circuit of this converter is very simple. Regardless of the power flow direction, the switch of the converter is turned on under zero-current condition and is almost turned off under zero-voltage condition. The experimental results of the proposed bidirectional converter are presented to verify the theoretical analysis.
Inspec keywords: PWM power convertors; zero voltage switching; zero current switching
Other keywords: modulation technique; zero-current condition; zero-voltage condition; auxiliary switch; voltage stresses; current stresses; power flow direction; identical auxiliary circuits; soft-switching bidirectional flyback converter; soft-switching condition
Subjects: Power convertors and power supplies to apparatus; Power electronics, supply and supervisory circuits
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