A Study on an Improved Three-Winding Coupled Inductor Based DC/DC Boost Converter with Continuous Input Current

Amir Farakhor, Mehdi Abapour, Mehran Sabahi, Saeid Gholami Farkoush, Seung-Ryle Oh and Sang-Bong Rhee
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Amir Farakhor: Department of Electrical and Computer Engineering, University of Tabriz, Tabriz 51666-16471, Iran
Mehdi Abapour: Department of Electrical and Computer Engineering, University of Tabriz, Tabriz 51666-16471, Iran
Mehran Sabahi: Department of Electrical and Computer Engineering, University of Tabriz, Tabriz 51666-16471, Iran
Saeid Gholami Farkoush: Department of Electrical Engineering, Yeungnam University, Gyeongsan 38541, Korea
Seung-Ryle Oh: Korea Electric Power Company (KEPCO), Daejeon 34056, Korea
Sang-Bong Rhee: Department of Electrical Engineering, Yeungnam University, Gyeongsan 38541, Korea

Energies, 2020, vol. 13, issue 7, 1-18

Abstract: This paper proposes a novel high voltage conversion gain DC/DC boost converter for renewable energy applications and systems. The proposed converter utilizes a three-winding coupled inductor. The presented converter benefits from a unique advantage, as the actual turn ratio of the coupled inductor is decreased in the charging state of the coupled inductor. However, while the inductor is discharging, the actual turn ratio is increased. This feature leads to a very high voltage conversion gain. Furthermore, a passive clamp circuit is employed to recover the leakage current of the coupled inductor. The voltage stresses on the semiconductors are also reduced. In addition, the average current of the primary side of the coupled inductor is zero. This will reduce the total energy stored in the passive elements of the converter. The paper analyzes the Continuous Conduction Mode (CCM) and the operation principles of the presented converter are thoroughly derived. A 250 W laboratory hardware prototype is prepared to verify the proper operation of the presented converter. The obtained experimental results validate the feasibility of the presented converter.

Keywords: DC/DC boost converter; continuous conduction mode (CCM); coupled inductors (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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