Fujio KUROKAWA


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:   
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 convertersoft-start380 Vdcdigital control
 Summary | Full Text:PDF(2MB)

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 converterneural networkpredictiondigital control
 Summary | Full Text:PDF(2.6MB)

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 convertervoltage clampinductancedesign method
 Summary | Full Text:PDF(1.4MB)

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 supplyhall thrusterpower control methodaerospacepower processing unit
 Summary | Full Text:PDF(1.5MB)

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 controlforward type multiple-output dc-dc converterdesign approach
 Summary | Full Text:PDF(1.5MB)

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 currenthigh voltagepower feeding systemdata center
 Summary | Full Text:PDF(2.4MB)

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 controlPID controlFIR filterIIR filter
 Summary | Full Text:PDF(673.7KB)

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 supplydigital controldc-dc converterPWM controlPFM control
 Summary | Full Text:PDF(809.1KB)

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 thyristorgate drive circuitair core reactorhysteresis comparator
 Summary | Full Text:PDF(856.5KB)

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 converterdigital controlstatic modelVCO
 Summary | Full Text:PDF(1.7MB)

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-inputbuck-boostinput current harmonicsoutput voltage ripple
 Summary | Full Text:PDF(492.9KB)

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-powerUDP/IPmulti-castthreadremote monitoring
 Summary | Full Text:PDF(1.1MB)

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 converterdigital controlP-I-D controlVCO
 Summary | Full Text:PDF(1.1MB)

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-inputdc-dc converterclean energyconstant current control
 Summary | Full Text:PDF(508.1KB)

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 convertervoltage-resonantbuck-boost typezero-voltage switchingdiscontinuous reactor current mode
 Summary | Full Text:PDF(772.6KB)