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High-Power Multilevel Step-Up DC/DC Converter for Offshore Wind Energy Systems

A. Gandomkar ; Amir Parastar (Institutionen för material- och tillverkningsteknik, Högspänningsteknik) ; J. K. Seok
Ieee Transactions on Industrial Electronics (0278-0046). Vol. 63 (2016), 12, p. 7574-7585.
[Artikel, refereegranskad vetenskaplig]

This paper presents a multilevel step-up dc/dc converter for dc-grid-based offshore wind energy conversion applications. The main features of the proposed multilevel converter are as follows: 1) the voltage stress of the power devices can be reduced, making it suitable for high-voltage applications; 2) the boost inductor can be reduced significantly, leading to the outstanding dynamic performance; and 3) high-voltage gain can be obtained and thus is well-suited for high-gain applications. Theoretical analysis was carried out for a four-level step-up converter, based on which, the converter can be extended to any arbitrary number of levels. The proposed four-level converter was verified by a simulation and evaluated by comparing with a conventional multilevel dc/dc converter in terms of the component stress and power device count. The developed topology was implemented on a 2-kW prototype converter to evaluate its feasibility.

Nyckelord: DC-grid-based offshore wind energy, high-voltage gain, multilevel step-up converter

Denna post skapades 2017-01-13.
CPL Pubid: 246885


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Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik, Högspänningsteknik (2005-2017)


Elektroteknik och elektronik

Chalmers infrastruktur