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Electronics 2015, 4(2), 283-302; doi:10.3390/electronics4020283

A Flexible Power Electronics Configuration for Coupling Renewable Energy Sources

1
Department of Industrial Engineering, University of Padua, Via Gradenigo, 6/a, 35131 Padova, Italy
2
Department of Engineering Cybernetics, Norwegian University of Science and Technology, O.S. Bragstads plass 2, 7491 Trondheim, Norway
3
Ingeteam Power Technology S.A., Parque Tecnológico de Bizkaia, Zamudio (Bizcaya), 48170 Spain
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Bimal K. Bose
Received: 23 March 2015 / Revised: 2 May 2015 / Accepted: 4 May 2015 / Published: 11 May 2015
(This article belongs to the Special Issue Multi-Level Converters)
View Full-Text   |   Download PDF [1828 KB, uploaded 11 May 2015]   |  

Abstract

A combination of series, parallel and multilevel power electronics has been investigated as a potential interface for two different types of renewable energy sources and in order to reach higher power levels. Renewable energy sources are typically dispersed in a territory, and sources, like wind and solar, allow small to medium-scale generation of electricity. The configuration investigated in this article aims at adapting the coupling solution to the specific generation characteristics of the renewable energy source to make it fit the electrical network. The configuration consists of a combination of three-phase multilevel converters and single-phase inverters, which are designed to provide flexibility, high power quality and high efficiency. A detailed analysis and simulation is performed to identify the properties in conjunction with the electrical grid requirements and the potential challenges encountered during operation. An optimized operation example of wind generation combined with solar PV generation is presented to exemplify the flexibility and benefits of the proposed configuration. View Full-Text
Keywords: neutral point clamped (NPC); insulated gate bipolar transistor (IGBT); H-bridge; zero sequence blocking transformer (ZSBT); voltage dip; phasors; balancing circuits; maximum power point tracking (MPPT) neutral point clamped (NPC); insulated gate bipolar transistor (IGBT); H-bridge; zero sequence blocking transformer (ZSBT); voltage dip; phasors; balancing circuits; maximum power point tracking (MPPT)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Filippini, M.; Molinas, M.; Oregi, E.O. A Flexible Power Electronics Configuration for Coupling Renewable Energy Sources. Electronics 2015, 4, 283-302.

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