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Panel on DC Power for Buildings. Keiichi Hirose, Ph.D. NTT Facilities, INC. Japan IEEE EnergyTech Conference The Case Western Reserve University, Cleveland, Ohio May 31, 2012. 2. History of 380VDC power promotion for data centers. Step3 Commercial services. Step2 Field demonstration.
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Panelon DC Power for Buildings Keiichi Hirose, Ph.D. NTT Facilities, INC. Japan IEEE EnergyTech Conference The Case Western Reserve University, Cleveland, Ohio May 31, 2012
2 History of 380VDC power promotion for data centers Step3 Commercial services Step2 Field demonstration Step1 Research & development 2005-2008 NEDO Sendai Microgrid Demo 2007 Dec. DC Microgrid Demo With 380 VDC servers 2009 100 kW, 380 VDC Demos in Tokyo 2011 Feb. Commercial Service With 380 VDC 2006 June JANOG Panel discussion 2008 June NTT News release “Use of DC power for Data centers in NTT” Note : JANOG: Japan Network Operators Group
DC Power Demonstrations by NTT Facilities 3 Module data center in wind farm NTT EAST * NTT Facilities NTT Data Corp. Sapporo Sendai NEDO Project 300VDC Demo NTT Musashinolab. Fukuoka NTT Atsugi lab. Osaka * : The demonstration was supported by Ministry of Internal Affairs and Communications, Japan in 2010. Aichi 380VDC Microgird In university campus Tokyo Metropolitan 100 KW x 5 sites
Next step for advanced DC power system Telecommunications Central offices Fusion, since 2000 Computer (Information) DC power Data centers Next step Electric appliances Distributed Energy Sources Residential, commercial buildings
New Project FY2012-2015 Smart community project by DC power distribution for commercial and residential buildings Obihiro city, Hokkaido Yamagata city Tokyo This project is supported by the Ministry of Environment, Japan.
Purpose of the project • Distributed autonomous system with DC power integration • Development of • High-efficient energy system • Energy interchange system • Disaster prevention function(s) • Business model • Demonstraion in 2 sites (Yamagata, Obihiro) • Feasebility study
Office building zone Energy center PV panels Commercial building zone Commercial building zone Power node Demonstration area in Yamagata city (Draft) Residential zone (4 houses)