Multi-port high voltage gain modular power converter for offshore wind farms

Show simple item record Song, Sen Hu, Yihua Ni, Kai Yan, Joseph Chen, Guipeng Wen, Huiqing Ye, Xianming 2018-09-21T06:27:32Z 2018-09-21T06:27:32Z 2018-06-26
dc.description.abstract In high voltage direct current (HVDC) power transmission of offshore wind power systems, DC/DC converters are applied to transfer power from wind generators to HVDC terminals, and they play a crucial role in providing a high voltage gain, high efficiency, and high fault tolerance. This paper introduces an innovative multi-port DC/DC converter with multiple modules connected in a scalable matrix configuration, presenting an ultra-high voltage step-up ratio and low voltage/current rating of components simultaneously. Additionally, thanks to the adoption of active clamping current-fed push–pull (CFPP) converters as sub-modules (SMs), soft-switching is obtained for all power switches, and the currents of series-connected CFPP converters are auto-balanced, which significantly reduce switching losses and control complexity. Furthermore, owing to the expandable matrix structure, the output voltage and power of a modular converter can be controlled by those of a single SM, or by adjusting the column and row numbers of the matrix. High control flexibility improves fault tolerance. Moreover, due to the flexible control, the proposed converter can transfer power directly from multiple ports to HVDC terminals without bus cable. In this paper, the design of the proposed converter is introduced, and its functions are illustrated by simulation results. en_ZA
dc.description.department Electrical, Electronic and Computer Engineering en_ZA
dc.description.librarian am2018 en_ZA
dc.description.sponsorship The State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources under Grant LAPS17022. en_ZA
dc.description.uri en_ZA
dc.identifier.citation Song, S., Hu, Y., Ni, K. et al. 2018, 'Multi-port high voltage gain modular power converter for offshore wind farms', Sustainability, 10, no. 7, art. 2176, pp. 1-15. en_ZA
dc.identifier.issn 2071-1050 (online)
dc.identifier.other 10.3390/su10072176
dc.language.iso en en_ZA
dc.publisher MDPI Publishing en_ZA
dc.rights © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license. en_ZA
dc.subject Power transmission en_ZA
dc.subject High voltage direct current (HVDC) en_ZA
dc.subject Offshore wind power system en_ZA
dc.subject Voltage gain en_ZA
dc.subject Efficiency en_ZA
dc.subject Fault tolerance en_ZA
dc.subject Multi-port DC/DC converter en_ZA
dc.subject Scalable matrix configuration en_ZA
dc.subject Current-fed push–pull (CFPP) en_ZA
dc.subject Sub-modules (SMs) en_ZA
dc.subject Soft-switching en_ZA
dc.title Multi-port high voltage gain modular power converter for offshore wind farms en_ZA
dc.type Article en_ZA

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