Interleaved full ZVZCS DC–DC boost converter: analysis, design, reliability evaluations and experimental results

Hadi Tarzamni; Ebrahim Babaei; Amirreza Zarrin Gharehkoushan; Mehran Sabahi

Interleaved full ZVZCS DC–DC boost converter: analysis, design, reliability evaluations and experimental results

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Author(s): Hadi Tarzamni ¹ ; Ebrahim Babaei ^{1, 2} ; Amirreza Zarrin Gharehkoushan ¹ ; Mehran Sabahi ¹
- Affiliations: 1: Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran ;
  2: Engineering Faculty, Near East University, 99138 Nicosia, North Cyprus, Mersin 10, Turkey
Source: Volume 10, Issue 7, 10 June 2017, p. 835 – 845
DOI: 10.1049/iet-pel.2016.0578 , Print ISSN 1755-4535, Online ISSN 1755-4543

Received 20/07/2016, Accepted 13/02/2017, Revised 22/01/2017, Published 20/02/2017

In this study, a new interleaved full soft switching DC–DC boost converter with a high power reliability is proposed. To achieve soft switching, a simple auxiliary circuit consisting of one switch, one diode, one inductor and two capacitors is employed in each single-phase DC–DC boost converter connected in parallel. All switches and diodes, including main and auxiliary ones, operate under soft switching conditions. These soft switching conditions consist of zero voltage and zero current switching (ZVZCS) for all switches and diodes at switching transitions except the output diodes, which turn off only with zero current switching. The soft switching technique used in this study decreases power losses which leads the converter to have higher efficiency and reliability. Also, the auxiliary circuit is located out of the main power path preventing high voltage and current stresses on the switches. In this study, operational modes analysis, design procedure, power reliability evaluations and laboratory prototype results with switching frequency of 20 kHz, input voltage of 48 V and output power of 40 W are presented.

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Interleaved full ZVZCS DC–DC boost converter: analysis, design, reliability evaluations and experimental results

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