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Technology Development Organization (technology + development_organization)

Distribution by Scientific Domains
Engineering100%

Kinds of Technology Development Organization

  • industrial technology development organization
    		•

    Selected Abstracts

    Autonomous dispersed control system for independent micro grid

    ELECTRICAL ENGINEERING IN JAPAN, Issue 1 2009
    Kensuke Kawasaki
    Abstract In this paper, we show an autonomous dispersed control system for independent micro grid of which performance has been substantiated in China by Shikoku Electric Power Co. and its subsidiary companies under the trust of NEDO (New Energy and Industrial Technology Development Organization). For the control of grid interconnected generators, the exclusive information line is very important to save fuel cost and maintain high frequency quality of the electric power supply, but it is relatively expensive in such small micro grids. We contrived an autonomous dispersed control system without any exclusive information line for dispatching control and adjusting supply control. We have confirmed through the substantiation project in China that this autonomous dispersed control system for an independent micro grid has a very satisfactory characteristic from the viewpoint of less fuel consumption and high electric quality. © 2008 Wiley Periodicals, Inc. Electr Eng Jpn, 166(1): 28,35, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.20618 [source]

    Development of Multiple Power Quality Supply System,

    IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING, Issue 5 2010
    Keiichi Hirose Member
    Abstract This paper describes the characteristics and performances of a multiple power quality supply system (MPQSS), which consists of power electronics-based voltage compensators and three types of distributed generators (DGs). Its original concept of a future power delivery system having different service levels to meet each customer or load requirement at the same time was proposed as Flexible, Reliable, and Intelligent Electrical eNergy Delivery System (FRIENDS). The effectiveness of the developed power system was measured during an actual field demonstration conducted in 2007 by the New Energy and Industrial Technology Development Organization (NEDO), Sendai, Japan. Its effectiveness in feeding four classes of alternative current (AC) and one of direct current (DC) power while meeting various customer requirements was confirmed. Some sets of test data and an analysis using the data indicate that the developed system meets all the requirements for DG-related plants and has additional benefits. The power system maintains voltage and frequency conditions without interruption in the every state, grid interconnection, islanding, and backup modes. Copyright © 2010 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc. [source]

    Latest research activity on the standard of high-voltage impulse in Japan

    IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING, Issue 5 2007
    Takayuki Wakimoto Member
    Abstract A national-standard-class impulse voltage measuring system in Japan was developed in the consignment research of the Ministry of Economy, Trade and Industry (METI) and New Energy and Industrial Technology Development Organization (NEDO) from 1998 to 2006. The standard measuring system for the impulse voltage measurements is to be managed by the Japan High-voltage Impulse testing Laboratories Liaison (JHILL) established under the Japan Electric Machine Industry Association (JEMA). In this paper, the composition of this standard measuring system, its performances and international compatibility, the domestic traceability system and related latest activities are described. Copyright © 2007 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc. [source]

    Purification of metallurgical-grade silicon up to solar grade

    PROGRESS IN PHOTOVOLTAICS: RESEARCH & APPLICATIONS, Issue 3 2001
    N. Yuge
    An estimate has been made of the feasibility of a metallurgical purification process, the NEDO (New Energy and Industrial Technology Development Organization) melt-purification process, for manufacturing solar-grade silicon from metallurgical-grade silicon. Equipment has been developed to pilot manufacturing plant scale. The system comprises an electron-beam furnace for phosphorus removal and a plasma furnace for boron removal. Each furnace has a mold for directional solidification to remove metallic impurities. The concentration of each impurity in the silicon ingot purified through the whole process satisfied the solar-grade level. The Solar-grade silicon produced showed p -type polarity and resistivity within the range 0·5,1·5,,,cm. Copyright © 2001 John Wiley & Sons, Ltd. [source]