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Energies 2015, 8(8), 7945-7967; doi:10.3390/en8087945

Photovoltaic Electricity for Sustainable Building. Efficiency and Energy Cost Reduction for Isolated DC Microgrid

1
Sorbonne University, Université de Technologie de Compiègne, EA 7284 AVENUES, Centre Pierre Guillaumat CS 60319, Compiègne Cedex 60203, France
2
Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China
*
Author to whom correspondence should be addressed.
Academic Editor: Tapas Mallick
Received: 29 June 2015 / Revised: 22 July 2015 / Accepted: 27 July 2015 / Published: 31 July 2015
View Full-Text   |   Download PDF [4251 KB, uploaded 31 July 2015]   |  

Abstract

In the context of sustainable buildings, this paper investigates power flow management for an isolated DC microgrid and focuses on efficiency and energy cost reduction by optimal scheduling. Aiming at high efficiency, the local produced power has to be used where, when, and how it is generated. Thus, based on photovoltaic sources, storage, and a biofuel generator, the proposed DC microgrid is coupled with the DC distribution network of the building. The DC bus distribution maximizes the efficiency of the overall production-consumption system by avoiding some energy conversion losses and absence of reactive power. The isolated DC microgrid aims to minimize the total energy cost and thus, based on forecasting data, a cost function is formulated. Using a mixed integer linear programming optimization, the optimal power flow scheduling is obtained which leads to an optimization-based strategy for real-time power balancing. Three experimental tests, operated under different meteorological conditions, validate the feasibility of the proposed control and demonstrate the problem formulation of minimizing total energy cost. View Full-Text
Keywords: DC microgrid; forecast data; efficiency; cost optimization; photovoltaic; system integration; storage DC microgrid; forecast data; efficiency; cost optimization; photovoltaic; system integration; storage
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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

Sechilariu, M.; Locment, F.; Wang, B. Photovoltaic Electricity for Sustainable Building. Efficiency and Energy Cost Reduction for Isolated DC Microgrid. Energies 2015, 8, 7945-7967.

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