DocumentCode :
720330
Title :
A comparative study of DC and AC microgrids in commercial buildings across different climates and operating profiles
Author :
Fregosi, Daniel ; Ravula, Sharmila ; Brhlik, Dusan ; Saussele, John ; Frank, Stephen ; Bonnema, Eric ; Scheib, Jennifer ; Wilson, Eric
Author_Institution :
Robert Bosch LLC, Mooresville, NC, USA
fYear :
2015
fDate :
7-10 June 2015
Firstpage :
159
Lastpage :
164
Abstract :
Bosch has developed and demonstrated a novel direct current (DC) microgrid system that maximizes the efficiency of locally generated photovoltaic energy while offering high reliability, safety, redundancy, and reduced cost compared to equivalent alternating current (AC) systems. Several demonstration projects validating the system feasibility and expected efficiency gains have been completed and additional ones are in progress. This paper gives an overview of the Bosch DC microgrid system and presents key results from a large simulation study done to estimate the energy savings of the Bosch DC microgrid over conventional AC systems. The study examined the system performance in locations across the United States for several commercial building types and operating profiles. It found that the Bosch DC microgrid uses generated PV energy 6%-8% more efficiently than traditional AC systems.
Keywords :
building management systems; cost reduction; distributed power generation; energy conservation; power generation reliability; redundancy; solar cells; AC microgrid system; Bosch DC microgrid system reliability; United State; alternating current microgrid system; commercial building; cost reduction; direct current microgrid system; energy saving estimation; photovoltaic energy efficiency maximizes; redundancy; Analytical models; Buildings; Light emitting diodes; Lighting; Load modeling; Logic gates; Mathematical model; DC microgrid; LED; PV; energy efficiency;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
DC Microgrids (ICDCM), 2015 IEEE First International Conference on
Conference_Location :
Atlanta, GA
Type :
conf
DOI :
10.1109/ICDCM.2015.7152031
Filename :
7152031
Link To Document :
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