Patent ID: 6137388
Filing Date: 2000-10-24
Classification: H01F,H02H,Y02E

Abstract:
A resistive superconducting current limiter comprising a superconducting element maintained in a superconducting state when carrying an electrical current under normal operating conditions, said superconducting element having a critical magnetic field density and being capable of a transition between a conducting and a resistive state and means for generating a magnetic field parallel to the superconducting element, the means for generating a magnetic field being connected in series with the superconducting element so that when a fault occurs an increase in the electrical current through the means for generating a magnetic field occurs and causes a magnetic field to be generated parallel to the superconducting element which exceeds the critical magnetic field density of the superconducting element to assist triggering of the transition of the superconducting element to a resistive state, said magnetic field being generated by a winding through which the electrical current passes and said winding comprising a wound conducting foil.