Comparative Study of DC and AC Microgrids in Commercial Buildings Across Different Climates and Operating Profiles
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.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- DOE Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1225024
- Report Number(s):
- NREL/CP-5500-65136
- Resource Relation:
- Conference: 2015 IEEE First International Conference on DC Microgrids (ICDCM);Atlanta, Georgia;06/07/2015 - 06/01/2015; Related Information: Proceedings of the 2015 IEEE First International Conference on DC Microgrids (ICDCM), 7-10 June 2015, Atlanta, Georgia
- Country of Publication:
- United States
- Language:
- English
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