Tokyo, May 24, 2012 - (JCN Newswire) - Fuji Electric Co., Ltd., DENSO Corporation, Toyota Tsusho Corporation, FamilyMart Co., Ltd., Takamiya Corporation, and Yamato Transport Co., Ltd. will jointly conduct a demonstration test in Kita Kyushu City, Fukuoka, Japan, for the development of aBuilding Energy Management System (BEMS), which will help realize "smart stores" that will contribute to leveling regional electric load, creating a low-carbon society, and using energy more effectively. The demonstration test will run from June 2012to December 2014.
The companies will use the test data to develop a highly-efficient energy management system that helps to level the regional energy load and create a low-carbon society. The demonstration test will focus on four key areas:
1.Optimal control of regional energy use2. Optimal control of store energy use3. Storage and efficient use of energy4. Smaller independent battery for lower cost and increased vehicle fuel efficiency
In Japan, KitaKyushu City is designated as an experimental city for next-generation energy sources and social systems, a program which has been promoted by Japan's Ministry of Economy, Trade and Industry since April 2010. The BEMS test will be held as part of KitaKyushu City's Project for Building a Smart Community.
Demonstration Test Details:
1. Optimal control of regional energy use
The test is designed to help create an energy management system not only for stores, but also a region-wide energy management system - Cluster Energy Management System (CEMS).
The test will evaluate a BEMS system including a store energy controller, store devices including a climate control system which can be operated in an energy-efficient manner, a BEMS controller to store and distribute energy for use in the store, a battery unit, various power conditioners for DC-AC and voltage conversion, and other devices.
Combined with the CEMS, the BEMS will respond to adjustments in the supply and demand for poweras well as Dynamic Pricing of electricity, a system for changing electricity prices with the season or time of day. Also, working with programs for Demand Response, a system that adjusts electricity consumers' use of electricity in response to changes in demand in the power grid, the BEMS will control electricity consumption during peak hours to help optimize energy use across the region.
2. Optimal control of store energy use
Energy use will be optimally controlled, based on the followingdata predicted by the store energy controller:
- Estimation of the amount of energy to be used by store devices including a climate control system, lighting devices, and showcases based on data such as past electricity use and the latest weatherforecast- Estimation of the amount of electricity to be generated by the photovoltaic unit installed at a store based on data such as temperature and amount of sunlight- Plan developed for battery charging and discharging to minimize electricitycosts
3. Storage and efficient use of energy
Combined with the BEMS controller, battery unit, power conditioners, and photovoltaic generation unit, the BEMS controls the storage and distribution of electricity according to a battery charging and discharging plan developed by the store energy controller, to provide electricity to devices (DC-powered showcases and charging poles) that operate on direct current and those (devices installed in stores) that run on alternating current.
Whilepower companies supply electricity as alternating current, photovoltaic units generate direct current electricity, which is normally converted into alternating current for electric devices, incurring conversion losses. In the demonstration test,DC-powered showcases will run on direct current stored in the battery unit without DC-AC conversion, thus eliminating conversion losses and using electricity more efficiently.
The area in Kita Kyushu City where the demonstration tests will be conductedis designated by the Japanese government as a special zone for the supply and use of electricity. To exploit this advantage, the BEMS used in the test will also have a function to send surplus electricity from its battery unit to the regionalpower company. The effectiveness of this function when electricity balance is tight will be evaluated.
4. Smaller independent battery for lower cost and increased vehicle fuel efficiency
Refrigerated delivery vehicles that regularly transport goods tocommercial facilities will be equipped with a battery storage system. This will allow the vehicles to control the temperature of the refrigerator and/or freezer when the engine is stopped or at an idle.
The battery storage systems can be fully charged at distribution centers and can be partially charged at the commercial facilities in which the vehicle visits. This allows the total capacity of battery storage system to be reduced, allowing for a smaller battery pack.
The demonstration test will measure improvements in fuel efficiency and reduced production costs that can be achieved when making the battery unit smaller.
The roles of each company in the demonstration test will be as follows:
Fuji Electric: - Developingthe store energy controller and energy-efficient store devices and systems- Demonstrating the elimination of DC-AC conversion losses by using DC-power showcases
DENSO:- Developing the BEMS controller, battery unit, and power conditioners- Developingrefrigerated delivery vehicles with an battery unit and an idle-stop system, and a system for charging its battery
Toyota Tsusho:- Developing a photovoltaic generation system that works with the BEMS- Developing a portable battery utilizationsystem
FamilyMart: - Location of the shop where systems are to be installed: Media Park Yahata Shop, Kita Kyushu City- Offering a site where systems (photovoltaic generation unit, BEMS, DC-powered showcase, and charging pole) will beinstalledand operated- Testing the BEMS and using surplus electricity generated by the photovoltaic unit according to the regional energy situation
Takamiya: - Location of the shop where systems are to be installed: Mega Field Point & Peg Yahata Central Store, Kita Kyushu City- Offering a site where systems (photovoltaic generation unit, BEMS, DC-powered showcase, and charging pole) will be installed and operated- Testing the BEMS and using surplus electricity generated by the photovoltaic unit according to the regional energy situation
Yamato Transport:- Location of the store where systems are to be installed: Yahata Higashi Branch, Fukuoka- Offering a site where systems (photovoltaic generation unit, BEMS, and chargingpole) willbe installed and operated- Testing the refrigerated delivery vehicles, including charging the battery, in the company's operations
Copyright 2011 JCN Newswire. All rights reserved. www.japancorp.net
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