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Analysis, design, and experimental verification of high step-up DC-DC converter to interface renewable energy sources into DC nanogrid

Hassan, W ORCID: 0000-0002-1926-1724, Gautum, S, Lu, DD-C and Xiao, W 2019 , 'Analysis, design, and experimental verification of high step-up DC-DC converter to interface renewable energy sources into DC nanogrid', in Proceedings of the 2019 IEEE International Conference on Industrial Technology (ICIT) , IEEE-Inst Electrical Electronics Engineers Inc, New Jersey, USA, pp. 1649-1954 , doi: 10.1109/ICIT.2019.8755184.

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Abstract

This paper proposes a new non-isolated, high step-up DC-DC converter to interface renewable sources into DC microgrid. The topology utilizes the coupled inductor and switched capacitor techniques to achieve high step-up voltage conversion ratio. The leakage energy is directly transferred to output to avoid voltage spikes across the switch. The switching devices have relatively low voltage stresses. In addition, the coupled inductor alleviated the reverse recovery problem of the diode. The key features include high efficiency, low voltage stresses, and low component count and cost. The steady-state analysis and operation of the proposed converter are presented in detail. Finally, a 200 W prototype circuit operating at a switching frequency of 100 kHz is built in the laboratory to verify the performance. The experimental results substantiate the theoretical analysis and show a peak efficiency of 96.90%.

Item Type: Conference Publication
Authors/Creators:Hassan, W and Gautum, S and Lu, DD-C and Xiao, W
Keywords: power converters, DC microgrids, renewable energy systems
Journal or Publication Title: Proceedings of the 2019 IEEE International Conference on Industrial Technology (ICIT)
Publisher: IEEE-Inst Electrical Electronics Engineers Inc
DOI / ID Number: 10.1109/ICIT.2019.8755184
Copyright Information:

Copyright 2019 IEEE

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