"Shinsuke Yonetani,Hideaki Fujita,HIrofumi Akagi,Naotaka Okada","Feasibility Study of a 6.6 kV, 1MW Transformerless BTB-Based Loop Controller -System Design and Zero-Sequence-Current Reduction-",,"Transactions of IEEJ",,"Vol. 124","No. 11","pp. 1349-1356",2004,Nov.
"M. Hagiwara,H. Fujita,H. Akagi","A 21-level (line-to-line) BTB system based on series connection of sixteen converter-cells for power flow control: experimental verifications by a 200-V, 10-kW laboratory system","Industry Applications Society Annual Meeting","IEEE IAS Annual Meeting",,"Vol. 3",,"pp. 1432-1438",2004,Oct.
"ŽR‰º”ŽŽj,Jintakosonwit,Pichai,“¡“c‰p–¾,�Ԗؑו¶,ŽÂŒ´�ƒ–ç","Discussions and Comparisons between Comprehensive Harmonic Detection and Specific Harmonic Detection in a Shunt Active Filter for Installation on a Power Distribution System",,"Transactions of IEEJ",,"Vol. 124","No. 6","pp. 622-629",2004,June
"Makoto Hagiwara,Hideaki Fujita,Hirofumi Akagi","16’i‘½�d•ÏŠ·Ší‚ð—p‚¢‚½Ž©—㎮BTB‚ÌŽÀŒ±“IŒŸ“¢","•½�¬16”N“d‹CŠw‰ï‘S�‘‘å‰ï",,,,"  4-139",,2004,Mar.
"’†’Ë Œ’•v,Hideaki Fujita,Hirofumi Akagi","A Resonant Gate-Drive Circuit without Gate-Charge Losses for a Power MOSFET","“d‹CŠw‰ï ”¼“±‘Ì“d—Í•ÏŠ·Œ¤‹†‰ï","“d‹CŠw‰ï ”¼“±‘Ì“d—Í•ÏŠ·Œ¤‹†‰ïŽ‘—¿",,,"No. SPC-04-60","pp. 75-80",2004,Jan.