PROBLEM TO BE SOLVED: To provide a superconducting coil drive system that can stably generate a magnetic field even if a main power source is turned off after superconducting coils are excited by the main power source.SOLUTION: A superconducting coil drive system comprises: superconducting coils made of high-temperature superconducting wire a main power source for excitation connected to the superconducting coils and a current holding power source connected in series or parallel with the main power source to pass current through the superconducting coils so as to keep a magnetic field of the superconducting coils constant in place of the main power source after the superconducting coils are excited by the main power source.COPYRIGHT: (C)2015,JPO&INPIT【課題】主電源で超電導コイルを励磁した後は、主電源を停止させても安定して磁界を発生させることができる超電導コイルの駆動システムを得ることを目的とする。【解決手段】高温超電導線材で構成された超電導コイルと、この超電導コイルに接続された励磁用の主電源と、この主電源に直列または並列に接続され、前記主電源によって前記超電導コイルが励磁された後に前記主電源に替わって前記超電導コイルの磁界を一定に保つように前記超電導コイルに電流を流す電流保持用電源とを備えたものである。【選択図】図1
