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IEICE Trans

Fujio KUROKAWA

FOREWORD
Fujio KUROKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2026/01/01
Vol. E109-B  No. 1  pp. 1-1
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF
Loss Reduction of LLC Converter Using Bridge-Capacitor
Toshiyuki WATANABE Fujio KUROKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2024/12/01
Vol. E107-B  No. 12  pp. 955-964
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
LLC converter, high efficiency, stray capacitance between windings, noise filter, bridge-capacitor, 
 Summary | Full Text:PDF
Loss Evaluation and Efficiency Enhancement of an LLC Converter
Toshiyuki WATANABE Fujio KUROKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2020/09/01
Vol. E103-B  No. 9  pp. 922-928
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
phase-shift converter, LLC converter, high efficiency, winding loss, AC resistance, 
 Summary | Full Text:PDF
Loss Analysis from Capacitance between Windings in Multilayer Transformer and Loss Improvement by Winding Layer Layout Considering Working Voltage
Toshiyuki WATANABE Tetsuya OSHIKATA Kimihiro NISHIJIMA Fujio KUROKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2020/05/01
Vol. E103-B  No. 5  pp. 517-523
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
planar transformer, LLC converter, capacitance, 
 Summary | Full Text:PDF
Flexible Load-Dependent Soft-Start Method for Digital PID Control DC-DC Converter in 380Vdc System
Hidenori MARUTA Tsutomu SAKAI Suguru SAGARA Yuichiro SHIBATA Keiichi HIROSE Fujio KUROKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2017/04/01
Vol. E100-B  No. 4  pp. 518-528
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
dc-dc converter, soft-start, 380 Vdc, digital control, 
 Summary | Full Text:PDF
Transient Response of Reference Modified Digital PID Control DC-DC Converters with Neural Network Prediction
Hidenori MARUTA Daiki MITSUTAKE Masashi MOTOMURA Fujio KUROKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/11/01
Vol. E99-B  No. 11  pp. 2340-2350
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
dc-dc converter, neural network, prediction, digital control, 
 Summary | Full Text:PDF
Inductance Design Method for Boost Converter with Voltage Clamp Function
Ikuro SUGA Yoshihiro TAKESHIMA Fujio KUROKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/01/01
Vol. E96-B  No. 1  pp. 81-87
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
boost converter, voltage clamp, inductance, design method, 
 Summary | Full Text:PDF
High Efficiency Control Method for the Hall Thruster System through Constant Flow Rate Control by Power Supply Control
Hiroyuki OSUGA Fujio KUROKAWA Taichiro TAMIDA Naoji YAMAMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/01/01
Vol. E95-B  No. 1  pp. 133-142
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
power supply, hall thruster, power control method, aerospace, power processing unit, 
 Summary | Full Text:PDF
Digital PID Control Forward Type Multiple-Output DC-DC Converter
Fujio KUROKAWA Tomoyuki MIZOGUCHI Kimitoshi UENO Hiroyuki OSUGA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/12/01
Vol. E94-B  No. 12  pp. 3421-3428
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
digital PID control, forward type multiple-output dc-dc converter, design approach, 
 Summary | Full Text:PDF
Basic Characteristics of New Developed Higher-Voltage Direct-Current Power-Feeding Prototype System
Tadatoshi BABASAKI Toshimitsu TANAKA Toru TANAKA Yousuke NOZAKI Tadahito AOKI Fujio KUROKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/09/01
Vol. E93-B  No. 9  pp. 2244-2249
Type of Manuscript:  Special Section PAPER (Special Section on Telecommunication Energy Technology in Conjunction with Main Topics of INTELEC'09)
Category: 
Keyword: 
direct current, high voltage, power feeding system, data center, 
 Summary | Full Text:PDF
Static and Dynamic Characteristics of DC-DC Converter Using a Digital Filter
Fujio KUROKAWA Masashi OKAMATSU 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/03/01
Vol. E92-B  No. 3  pp. 998-1003
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
digital control, PID control, FIR filter, IIR filter, 
 Summary | Full Text:PDF
Static Characteristics of the Digital PWM and/or PFM Controlled Switching DC-DC Converters
Masahiro SASAKI Hirofumi MATSUO Fujio KUROKAWA Yasuhiro MIMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/03/01
Vol. E90-B  No. 3  pp. 645-650
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
switching power supply, digital control, dc-dc converter, PWM control, PFM control, 
 Summary | Full Text:PDF
An Improved Gate Drive Circuit Using an Air Core Reactor Developed for High Power GTO Thyristors
Hirofumi MATSUO Fujio KUROKAWA Katsuji IIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/01/01
Vol. E89-B  No. 1  pp. 196-202
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
GTO thyristor, gate drive circuit, air core reactor, hysteresis comparator, 
 Summary | Full Text:PDF
Novel Digital Controller with Static Model Reference for Switching DC-DC Power Converters
Hirofumi MATSUO Fujio KUROKAWA Haruhi ETO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/11/01
Vol. E88-B  No. 11  pp. 4346-4352
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
dc-dc converter, digital control, static model, VCO, 
 Summary | Full Text:PDF
Suppression of the Input Current Harmonics and Output Voltage Ripple Using the Novel Multiple-Input AC-DC Converter
Kimiyoshi KOBAYASHI Hirofumi MATSUO Fujio KUROKAWA Yoichi ISHIZUKA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/08/01
Vol. E88-C  No. 8  pp. 1785-1789
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
multiple-input, buck-boost, input current harmonics, output voltage ripple, 
 Summary | Full Text:PDF
1 MHz High-Speed Digitally Controlled DC-DC Converter
Fujio KUROKAWA Masahiro SASAKI Seiichi HIURA Hirofumi MATSUO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/12/01
Vol. E87-B  No. 12  pp. 3437-3442
Type of Manuscript:  INVITED PAPER (Special Section on the 25th International Telecommunications Energy Conference (INTELEC'03))
Category: 
Keyword: 
dc-dc converter, digital control, P-I-D control, VCO, 
 Summary | Full Text:PDF
Network of Plant Remote Monitoring System Using UDP/IP for Wind-Farms
Haruhi ETO Hirofumi MATSUO Fujio KUROKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/12/01
Vol. E87-B  No. 12  pp. 3457-3464
Type of Manuscript:  Special Section PAPER (Special Section on the 25th International Telecommunications Energy Conference (INTELEC'03))
Category: Power System Architecture
Keyword: 
wind-power, UDP/IP, multi-cast, thread, remote monitoring, 
 Summary | Full Text:PDF
Control Strategies of the Multiple-Input DC-DC Converter
Wenzhong LIN Hirofumi MATSUO Fujio KUROKAWA Yoichi ISHIZUKA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/09/01
Vol. E85-B  No. 9  pp. 1824-1831
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
multiple-input, dc-dc converter, clean energy, constant current control, 
 Summary | Full Text:PDF
A General Analysis of the Zero-Voltage Switched Quasi-Resonant Buck-Boost Type DC-DC Converter in the Continuous and Discontinuous Modes of the Reactor Current
Hirofumi MATSUO Hideki HAYASHI Fujio KUROKAWA Mutsuyoshi ASANO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1992/11/25
Vol. E75-B  No. 11  pp. 1159-1170
Type of Manuscript:  Special Section PAPER (Special Issue on Telecommunications Energy Systems and Switching Power Converters)
Category: 
Keyword: 
DC-DC converter, voltage-resonant, buck-boost type, zero-voltage switching, discontinuous reactor current mode, 
 Summary | Full Text:PDF