BEGINNING OF SUPERCONDUCTING POWER ELECTRONICS DEVICES(S-PED)

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.