Patents Assigned to ABB Transmission & Distribution Technologies, Ltd.
  • Patent number: 6762673
    Abstract: An elongated current limiting composite material comprising one or more high-temperature superconductor filaments and a second electrically conductive member, which may include a sheath of high bulk resistivity surrounding the filament. The current limiter exhibits dissipation in the range of 0.05-0.5 V/cm at currents of 3-10 times the operating current, thereby minimizing fault currents and improving recovery capability.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: July 13, 2004
    Assignees: American Superconductor Corp., ABB Transmission & Distribution Technologies, Ltd.
    Inventors: Alexander Otto, Ralph P. Mason, Craig J. Christopherson, Peter R. Roberts, Steven Fleshler, Gilbert N. Riley, Jr., Swarn S. Kalsi, Gregory L. Snitchler, Robert C. Diehl, Dietrich Bonmann, Martin Lakner, Willi Paul, Harry Zueger
  • Patent number: 6657533
    Abstract: A superconducting conductor and its method of manufacture includes an electrical conductor having a thermal conductor attached to and along a length of superconductor member and separated from the superconductor member by an electrically-insulative material. The member may include a length of superconductor composite having superconducting material and a non-superconducting, electrically conductive matrix material. The electrical conductor is configured to control the manner in which the superconductor transitions from its superconducting state to its non-superconducting (i.e., normal) state due to, for example, a fault current condition. The electrically-insulative material has a thickness for allowing heat from the superconductor to be conveyed to the thermal conductor. The superconducting conductor may be used in conjunction with a superconducting current-limiting device.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: December 2, 2003
    Assignees: American Semiconductor Corporation, ABB Transmission & Distribution Technologies, Ltd.
    Inventors: Gregory L. Snitchler, Dietrich Bonmann, Martin Lakner, Willi Paul