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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 13 of 13  /   
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 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
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
 Results 1 - 13 of 13  /   
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