A Comparative Study of DC and AC Microgrids （直流和交流的比较研究微型电网）.pdf

A Comparative Study of DC and AC Microgrids in Commercial Buildings Across Different Climates and Operating Profiles Preprint Daniel Fregosi, Sharmila Ravula, Dusan Brhlik, and John Saussele Robert Bosch LLC Stephen Frank, Eric Bonnema, Jennifer Scheib, and Eric Wilson National Renewable Energy Laboratory To be presented at the IEEE First International Conference on DC Microgrids Atlanta, Georgia May 24鈥?7, 2015 NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency Renewable Energy Operated by the Alliance for Sustainable Energy, LLC This report is available at no cost from the National Renewable Energy Laboratory (NREL) at /publications. Conference Paper NREL/CP-5500-63959 April 2015 Contract No. DE-AC36-08GO28308 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does n