A Multifunctional Isolated and Non-Isolated Dual Mode Converter for Renewable Energy Conversion Applications

Yiwang Wang, Chun Gan, Kai Ni, Xinhua Li, Houjun Tang and Yong Yang
Additional contact information
Yiwang Wang: Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Chun Gan: Department of Electrical Engineering and Computer Science, University of Tennessee, Knoxville, TN 37996, USA
Kai Ni: Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool L69 3GJ, UK
Xinhua Li: Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool L69 3GJ, UK
Houjun Tang: Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Yong Yang: School of Urban Rail Transportation, Soochow University, Suzhou 215137, China

Energies, 2017, vol. 10, issue 12, 1-17

Abstract: In this paper, a multifunctional isolated and non-isolated dual-mode low-power converter was designed for renewable energy conversion applications such as photovoltaic power generation to achieve different operating modes under bi-directional electrical conversion. The proposed topology consists of a bidirectional non-isolated DC/DC circuit and an isolated converter with a high-frequency transformer, which merge the advantages of both the conventional isolated converter and non-isolated converter with the combination of the two converter technologies. Compared with traditional converters, the multifunctional converter can not only realize conventional bi-directional functions, but can also be applied for many different operation modes and meet the high output/input ratio demands with the two converter circuits operating together. A novel control algorithm was proposed to achieve the various functions of the proposed converter. An experimental platform based on the proposed circuit was established. Both the simulation and experimental results indicated that the proposed converter could provide isolated and non-isolated modes in different applications, which could meet different practical engineering requirements.

Keywords: multifunctional converter; bi-directional; isolated and non-isolated; dual mode; control (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: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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