Hidefumi Shirahama
Hitachi
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Publication
Featured researches published by Hidefumi Shirahama.
power electronics specialists conference | 1988
Hidefumi Shirahama; Yoshimi Sakurai; Yasuo Matsuda; Yukio Ishigaki; Katsuji Murai
A novel GPG (gate pulse generator) for gate-turn-off converters (GTOs) is presented that provides quick-response firing-angle control and pulse width-modulated (PWM) control. Using the GPG, instantaneous control of active and reactive powers for an SMES (superconducting magnetic energy storage) system using one GTO converter is studied.<<ETX>>
IEEE Transactions on Power Electronics | 1994
Hidefumi Shirahama; Yoshimi Sakurai; Yukio Ishigaki; Katsuji Murai; Yasuo Matsuda
A new type of GPG (gate pulse generator) is presented to give GTO converters quick response firing angle control and PWM control functions. Using the GPG, an instantaneous control method of active and reactive powers for an SMES (superconducting magnetic energy storage) employing one GTO converter is studied.
power electronics specialists conference | 1988
Yukio Ishigaki; Hidefumi Shirahama; K. Kuroda
A theoretical approach to the simultaneous control of active power and reactive power that is based on decoupling control theory is proposed. The idea has been applied to a 5 MJ superconducting magnetic energy storage system connected to a 6600 V power line. The control performance was confirmed by a simulator test, a dummy test, and a real machine test. This system used a dumping resistor for protection, but the stored energy in the magnet was successfully transferred back to the power line by the phase control operation of the thyristor converter in the dummy quenching test. Operation in the permanent-current mode was also verified, and the decay time of the permanent current was consistent with loss due to the forward voltage drop of the thyristor switch.<<ETX>>
Archive | 1990
Hideki Miyazaki; Ikuo Yamato; Kenichi Onda; Yasuo Matsuda; Yuzo Morita; Hidefumi Shirahama; Norikazu Tokunaga; Yutaka Suzuki
Archive | 1993
Hidefumi Shirahama; Yorito Jifuku; Akira Kobayashi; Keizo Shimada; Norikazu Tokunaga; Yoshimi Sakurai; Ikuo Yamato; Tomoaki Mino; Satoru Inukai
Archive | 2006
Kiyoshi Sakamoto; Tsunehiro Endo; Hidefumi Shirahama; Yoshiaki Ajima
Archive | 1990
Hidefumi Shirahama; Ikuo Yamato; Norikazu Tokunaga; Yasuo Matsuda; Mitsufumi Iwanaka; Takeshi Nagano; Youuji Ishida
Archive | 1991
Hidefumi Shirahama; Ikuo Yamato; Yoshimi Sakurai; Norikazu Tokunaga
Archive | 2000
Atsuyuki Hiruma; Daisuke Maeda; Kiyoshi Sakamoto; Hidefumi Shirahama; Tomoyoshi Sugino; Kazuaki Tobari; 大輔 前田; 坂本 潔; 和明 戸張; 友啓 杉野; 秀文 白濱; 淳之 蛭間
Archive | 2004
Kazuaki Tobari; Tsunehiro Endou; Yoshitaka Iwaji; Hidefumi Shirahama; Yasuo Notohara
