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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| EE, IEE-SPC (Joint) |
2021-03-01 15:30 |
Online | Online | Modeling Method for Large Amplitude Fluctuation Characteristics of LLC Current Resonant Converter Using Linear Parameter-Varying (LPV) Plants Hideaki Funaki, Yuichi Noge, Masahito Shoyama (Kyushu Univ.), Yu Yonezawa, Yoshiyasu Nakashima (FUJITSU Advanced Technologies)  EE2020-41 |
(To be available after the conference date) [more] | EE2020-41 pp.7-12 |
| EE | 2021-01-25 10:55 |
Online | Online (Zoom) | Aged Deterioration Detection of DC-DC Converter Yasuyuki Koga (NiAS), Yudai Furukawa (Fukuoka University), Kazuhiro Kajiwara, Nobumasa Matsui, Fujio Kurokawa (NiAS), Yoshiyasu Nakashima, Yu Yonezawa (FUJITSU Advanced Technology) EE2020-27 |
In recent years, information and communication services have continued to develop, and the power supply is one of their ... [more] | EE2020-27 pp.22-26 |
| EE, WPT, IEE-SPC | 2018-07-02 10:15 |
Hokkaido | Hokkaido University | Automatic Derivation Method for Transfer Function of LLC Current Resonant Converter Using Numerical Calculation Takuma Sagara, Masahito Shoyama (Kyushu Univ.), Yu Yonezawa, Yoshiyasu Nakashima (Fujitsu laboratories) EE2018-11 |
The authors previously proposed derivation method for LLC current resonant converter by using numerical calculation. Ho... [more] | EE2018-11 pp.17-22 |
| EE | 2018-01-29 15:30 |
Oita | Satellite Campus Oita | [Special Talk]
Building a Model-Based Development Environment for Digitally Controlled Power Supplies Yu Yonezawa, Hiroshi Nakao, Yoshiyasu nakashima (Flab.) EE2017-62 |
[more] | EE2017-62 pp.115-120 |
| EE | 2018-01-30 13:35 |
Oita | Satellite Campus Oita | Failure Prediction Using Low Stability Phenomenon of Digitally Controlled SMPS by Electrolytic Capacitor ESR Degradation Hiroshi Nakao, Yu Yonezawa, Yoshiyasu Nakashima (Fujitsu LAB), Fujio Kurokawa (NiAS) EE2017-71 |
Electrolytic capacitors are known as one of the highest failure rate components in switching mode power supply SMPS). We... [more] | EE2017-71 pp.165-170 |
| EE | 2017-01-27 10:30 |
Nagasaki | Nagasaki University | Derivation of Transfer Function of LLC Current Resonant Converter Using Numerical Computation Yusuke Yamashita, Jun Imaoka, Masahito Shoyama (Kyushu Univ.), Yu Yonezawa, Yoshiyasu Nakashima (Fujitsu lab) EE2016-79 |
[more] | EE2016-79 pp.163-168 |
| EE | 2016-01-29 13:00 |
Fukuoka | KURUME HOTEL ESPRIT | Building a Model-Based Development Environment for Digitally Controlled Power Supplies Yu Yonezawa, Tomotake Sasaki (Fujitsu Labs.), Hisato Hosoyama, Atsushi Manabe (FATEC), Hiroshi Nakao, Takahiko Sugawara, Yoshiyasu Nakashima (Fujitsu Labs.) EE2015-23 |
[more] | EE2015-23 pp.85-90 |
| EE | 2016-01-29 13:20 |
Fukuoka | KURUME HOTEL ESPRIT | Anomaly Detection Technique of Duty Ratio in Switching Mode Power Supply Circuit Takahiko Sugawara, Yu Yonezawa, Hiroshi Nakao, Yoshiyasu Nakashima (FUJITSU LAB. LTD.) EE2015-24 |
In this report, we suggest the technique to improve the reliability of the power supply with multiplexing an overcurrent... [more] | EE2015-24 pp.91-96 |
| MRIS, ITE-MMS, IEE-MAG | 2015-03-06 17:25 |
Aichi | Nagoya Univ. | The Effect of High Frequency Z-direction Vibration and Magnetic Head Position on Hard Disk Drive Performance Reiko Kondo, Toshio Sugimoto, Takashi Miyoshi, Yoshiyasu Nakashima, Jun Tanaka, Takeshi Horie (FUJITSU LABORATORIES LTD.) MR2014-48 |
It is well known that vibration of hard disk drives (HDDs) degrades HDD performance . To prevent this, various feedforwa... [more] | MR2014-48 pp.59-64 |
| EE | 2014-01-24 13:25 |
Miyazaki | MIYAZAKI KANKO HOTEL | Efficiency Improvement of Switching Power Supply with Transient Current Circuit Using Digital Control Haruomi Takashita, Masahito Shoyama (Kyushu Univ), Yu Yonezawa, Yoshiyasu Nakashima (Fujitsu Lab) EE2013-46 |
The more Miniaturization of switching power supplies is required with the background of the annual miniaturization of el... [more] | EE2013-46 pp.91-96 |
| ICD, ITE-IST | 2012-07-26 10:20 |
Yamagata | Yamagata University | [Invited Talk]
Technology trend of high efficiency power supply Yoshiyasu Nakashima, Hiroshi Nakao, Yu Yonezawa, Takahiko Sugawara, Takeshi Horie (FUJITSU LABO) ICD2012-20 |
Recently, rapid increase of energy consumption used in large scale data centers becomes serious problem and energy savin... [more] | ICD2012-20 pp.7-11 |
| EE | 2012-01-25 15:15 |
Nagasaki | Loss analysis for Buck Converters with Transient Current Circuit Ruofeng LIU, Masahito Shoyama (Kyushu Univ.), Yu Yonezawa, Yoshiyasu Nakashima (FUJITSU LAB) EE2011-41 |
[more] | EE2011-41 pp.59-63 |
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| EE | 2011-01-27 15:20 |
Kumamoto | Proposal of a loss less snubber for Flyback converter Yu Yonezawa, Yoshiyasu Nakashima, Takahiko Sugawara, Hiroshi Nakao, Toshio Sugimoto (Fujitsu Labs.) EE2010-28 |
In recent years laptop computers are getting smaller and miniaturization of an AC adaptor is required. Filter components... [more] | EE2010-28 pp.1-4 |
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