http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Pumping-up Current Characteristics of Linear Type Magnetic Flux Pump
Chung, Yoondo,Muta, Itsuya,Hoshino, Tsutomu,Nakamura, Taketsune,Ko, Taekuk The Korea Institute of Applied Superconductivity a 2004 한국초전도저온공학회논문지 Vol.6 No.2
The linear type flux pump aims to compensate a little bit decremental persistent current of the HTS magnet in NMR and MRI spectrometers. The flux pump mainly consists of DC bias coil, 3-phase AC coil and Nb foil. The persistent current in closed superconductive circuit can be easily adjusted by the 3-phase AC current, its frequency and the DC bias current. In the experiment, it has been investigated that the flux pump can effectively charge the current in the load coil of 543 mH for various frequencies in 18 minutes under the DC bias of 10 A and the AC of 5 $A_{rms}$. The maximum magnitudes of pumping current and load magnet voltage are 0.72 A/min and 20 ㎷, respectively. Based on simulation results by the FEM are proved to nearly agree with experimental ones.
BEGINNING OF SUPERCONDUCTING POWER ELECTRONICS DEVICES(S-PED)
Tsutomu Hoshino,Hnoshi Tsukiji,Masahiro Tsukiyanma,Itsuya Muta,Morio Suzuki 전력전자학회 1995 ICPE(ISPE)논문집 Vol.1995 No.10
The superconducting permanent current switch (PCS) is an important component to build MRI system. This switch uses a thermal and / or magnetic super-to-normal phase transition of the superconductor Unfortunately, it was not designed using with line frequency We made some superconducting power electronics devices operating up to 100 Hz. The results of development and preliminary studying of the heat controlled S-PED up to line frequency are presented. The circuit including these devices have to be designed as current source oriented.