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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| EMCJ | 2012-01-27 16:10 |
Fukuoka | Kyushu Univ. | Malfunction Analysis of SiC-SIT DC Circuit Breaker for Short Accident in 400V DC Power Supply System Kosuke Nomura (Kyushu Univ.), Seiya Abe (ICSEAD), Sihun Yang, Masahito Shoyama (Kyushu Univ.), Tamotsu Ninomiya (Nagasaki Univ.), Akira Matsumoto, Akiyoshi Fukui (NTT Facilities)  EMCJ2011-129 |
In DC power supply system, a fast response circuit breaker is required. This paper considers and analyzes the malfunctio... [more] | EMCJ2011-129 pp.105-110 |
| EE | 2012-01-25 10:20 |
Nagasaki | Fast Proportional Digital Control Circuit for Switching Power Supply Koji Murata, Ryuya Yoshida, Hidenori Maruta, Fujio Kurokawa (Nagasaki Univ.), Toru Tanaka, Keiichi Hirose (NTT Facilities) EE2011-32 |
This paper presents a digital P-I-D control switching power supply with fast proportional control. The digital control c... [more] | EE2011-32 pp.7-11 |
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| EE | 2012-01-25 13:00 |
Nagasaki | Management System for Large-capacity Stationary Lithium-ion Batteries Riichi Kitano, Kahou Yabuta, Takashi Matsushita, Tomonobu Tsujikawa (NTT-F), Takefumi Isobe (NTT-F RESEARCH INSTITUTE), Takashi Kofuse (Shin-Kobe Electric Machinery) EE2011-36 |
We developed a management system (BMS) for large-capacity stationary Lithium-ion batteries. BMS keeps the batteries safe... [more] | EE2011-36 pp.31-36 |
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| EE | 2012-01-25 13:25 |
Nagasaki | Safety evaluation of a Li-ion battery for the backup power supplies used for telecommunications Kahou Yabuta, Riichi Kitano, Takashi Matsushita, Tomonobu Tsujikawa (NTT Facilities, inc), Masayasu Arakawa (NTT Facilities Research Institute Inc), Koji Hayashi (Shin-Kobe Electric Machinery Co., Ltd) EE2011-37 |
We have developed a Li-ion battery for the backup power supplies used for telecommunications. We used a phosphazene flam... [more] | EE2011-37 pp.37-40 |
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| EE | 2012-01-25 13:50 |
Nagasaki | Control of electric power flow between two micro grids Tomohito Ushirokawa, Keiichi Hirose (NTT-F), Kazuto Yukita, Katsuhiro Ichiyanagi (AIT), Yoshiaki Okui (Sanyo Denki) EE2011-38 |
This paper proposes the power flow control between two micro grids. The proposed method uses the unified power flow cont... [more] | EE2011-38 pp.41-45 |
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| EE | 2012-01-25 14:50 |
Nagasaki | Control characteristics of a High Voltage Isolated DC-DC converter
-- Effect of snubber capacitor -- Kazuhide Domoto, Tamotsu Ninomiya (Nagasaki Univ.), Rejeki Simanjorang, Hiroshi Yamaguchi (AIST), Seiya Abe (ICSEAD), Masato Kaga, Akiyoshi Fukui (NTT-F) EE2011-40 |
A 5kW-Class high-voltage isolated dc-dc power supply to be used in an HVDC power distribution systems of a data centers ... [more] | EE2011-40 pp.53-58 |
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| EE | 2012-01-26 13:00 |
Nagasaki | A study of electric characteristics in breaking short circuit current in the High Voltage Direct Current (HVDC) distribution system. Masatoshi Noritake, Tomohito Ushirokawa, Keiichi Hirose, Masato Mino (NTT FACILITIES) EE2011-50 |
A consideration of short circuit protection in high voltage direct current (HVDC) distribution system is written in this... [more] | EE2011-50 pp.109-114 |
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| EE | 2012-01-26 13:25 |
Nagasaki | Study on Voltage Range for a 380 V dc Distribution Keiichi Hirose, Masatoshi Noritake, Tomohito Ushirokawa, Masato Mino (NTT-F) EE2011-51 |
[more] | EE2011-51 pp.115-120 |
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| EE, IEE-SPC | 2011-07-28 13:50 |
Hokkaido | Tie line power flow control using parallel processing method in micro grid Tomohito Ushirokawa, Keiichi Hirose (NTT-F), Kazuto Yukita, Katsuhiro Ichiyanagi (AIT), Yoshiaki Okui (Sanyo Denki) EE2011-8 |
In this paper, we propose that the line power flow control operation of the micro grid from utility power. This method i... [more] | EE2011-8 pp.13-18 |
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| EE, IEE-SPC | 2011-07-28 14:15 |
Hokkaido | Study on Voltage Range for 380 Vdc Distribution Keiichi Hirose, Masatoshi Noritake, Masato Mino (NTT-F) |
[more] | ||
| EE, IEE-SPC | 2011-07-29 13:20 |
Hokkaido | Development of Large Capacity Stationary Lithium-ion Battery System for ICT backup system Takashi Matsushita, Tomonobu Tsujikawa, Kahou Yabuta (NTT-F), Masayasu Arakawa (NTT-F Research Institute Inc.), Koji Hayashi (Shin-Kobe Electric Machinery Co., Ltd.) EE2011-14 |
We have successfully developed large capacity stationary lithium-ion batteries for a back up power supply of telecommuni... [more] | EE2011-14 pp.91-95 |
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| EE, IEE-HCA | 2011-05-27 15:00 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Surge Analysis of an Isolated DC-DC Converter in HVDC Power Distribution Systems Kazuhide Domoto, Tamotsu Ninomiya, Kiichi Nakao (Nagasaki Univ.), Simanjorang Rejeki, Hiroshi Yamaguchi, Hiromichi Ohashi (AIST), Seiya Abe (ICSEAD), Masato Kaga, Akiyoshi Fukui (NTT-F) EE2011-5 |
In an isolated DC-DC converter utilized in the HVDC power distribution system, a large surge voltage occurs across the s... [more] | EE2011-5 pp.47-52 |
| EE | 2011-01-28 10:40 |
Kumamoto | Operating Characteristics of Semiconductor Circuit Breaker in 400V DC Power Supply System in case of a grounding fault Sihun Yang, Mariko Ogawa (Kyushu Univ.), Seiya Abe (ICSEAD), Masahito Shoyama (Kyushu Univ.), Tamotsu Ninomiya (Nagasaki Univ.), Akira Matsumoto, Akiyoshi Fukui (NTT-F) EE2010-33 |
[more] | EE2010-33 pp.29-34 |
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| EE | 2011-01-28 11:05 |
Kumamoto | A study of breaking characteristics of MCCB in the use of Higher Voltage Direct Current (HVDC) distribution system. Masatoshi Noritake, Tomohito Ushirokawa, Keiichi Hirose, Masato Mino (NTT FACILITIES) EE2010-34 |
[more] | EE2010-34 pp.35-40 |
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| EE | 2011-01-28 11:30 |
Kumamoto | Plug & socket-outlet for DC power distribution Keiichi Hirose, Masatoshi Noritake (NTT-F), Takashi Yuba, Koichi Kiryu, Akio Nakamura (FCL), Junya Sekikawa (Shizuoka Univ.) EE2010-35 |
This paper reports test results and their reviews for the developed plug and socket-outlet applied to the 400 Vdc power ... [more] | EE2010-35 pp.41-48 |
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| EE | 2011-01-28 15:15 |
Kumamoto | Fast Proportion Digital Control Circuit for DC-DC Converter. Yuki Maeda, Fujio Kurokawa, Yuichiro Shibata (Nagasaki Univ.), Tsukasa Takahashi, Kouta Bansho, Toru Tanaka, Keiichi Hirose (NTT-f) EE2010-40 |
This paper presents fast sampling and a low cost digital control circuit for dc-dc converter. The dynamic characteristic... [more] | EE2010-40 pp.73-77 |
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| EE, IEE-SPC | 2010-07-29 13:50 |
Kochi | Kochi National College of Technology | Development of Li-ion batteries for telecommunication applications Tomonobu Tsujikawa, Kahou Yabuta, Takashi Matsushita (NTT-F), Masayasu Arakawa (NTT Facilities Research Institute INC.,), Koji Hayashi (Shin-Kobe Electric Machinery Co. Ltd.,) EE2010-7 |
[more] | EE2010-7 pp.13-16 |
| EE, IEE-SPC | 2010-07-30 10:40 |
Kochi | Kochi National College of Technology | Cost-benefit analysis of mlutiple power quality supply systems Keiichi Hirose, Toshiro Matsumura (Nagoya Univ.), Mikio Yamasaki (NTT-F) EE2010-10 |
[more] | EE2010-10 pp.27-32 |
| EE, IEE-SPC | 2010-07-30 11:05 |
Kochi | Kochi National College of Technology | A study of collecting the power quality data in Japan Tetsushi Tsumura, Keiichi Hirose, Mikio Yamasaki (NTT Facilities) EE2010-11 |
Recently, our highly networked information society has progressed. Therefore, no failures and uninterrupted power are ne... [more] | EE2010-11 pp.33-38 |
| CPM, EE | 2010-02-01 10:10 |
Kyoto | Fabrication of Cathode Active Material/Nanocarbon Composites and Their Effect on Lithium Cell Performance Yusuke Uno, Toshihiro Yoshida, Koji Tachimori (Toyama Pref. Univ.), Tomonobu Tsujikawa (NTT Facilities), Toshiro Hirai (Toyama Pref. Univ.) EE2009-57 CPM2009-149 |
We fabricated LiCoO2/helical nanocarbon (HCNs) composites by forming HCNs on LiCoO2 coated with acetylene black (AB) (Li... [more] | EE2009-57 CPM2009-149 pp.11-15 |
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