Superconducting inductors

A low loss circuit comprising:

• a plurality of circuit elements in a circuit configuration, said elements including at least one power source and further including
• a linear inductor including a core including a linear geometry consisting primarily of a highly permeable magnetic material and at least one winding of a conductor enclosed within a bore of the core along the linear geometry, and an insulator located between the core and the winding, the insulator being adapted to maintain the winding in spaced relation to the core sufficient to maintain its electrical integrity with respect to the core, wherein the conductor comprises a high temperature superconducting material,
• a refrigerator which maintains, during operation of the inductor, at least one winding of the inductor at a temperature at which the conductor exhibits superconductivity, the linear geometry of the core is disposed within the refrigerator;
• an input which provides power to each conductor winding;
• and
• an output which receives power from each conductor, said circuit providing at least 10 kilowatts of power.

An inductive device comprising:

• a linear inductor including a core including a linear geometry consisting primarily of a material having a relative permeability with respect to free space in the range of about 50 to 5000 and selected from among iron, nickel and their alloys, molypermalloy and high permeability glassy metals, and further comprising at least one winding of a first conductor enclosed within a bore of the core along the linear geometry of the core and an insulator located between the core and the winding of the first conductor, the insulator being adapted to maintain the winding of the first conductor in spaced relation to the core sufficient to maintain its electrical integrity with respect to the core, wherein the first conductor is a tape, wire or cable and comprises a high temperature multifilamentary composite superconducting material selected from the bismuth family of oxide superconductors,
• a second conductor disposed external to and coaxially with respect to the linear geometry of the core and maintained in spaced relation from the core to maintain its electrical integrity from the core,
• a refrigerator adapted to cryogenically cool at least the first conductor portion of the inductor to a temperature at which the first conductor exhibits superconductivity,
• an input which provides power to each conductor winding;
• an output which receives power from each conductor winding, and
• wherein the current-carrying capacity of the device is greater than 50 amperes and the power capacity of the device is greater than 10 kilowatts.

A cryogenically cooled inductor apparatus comprising:

• a refrigeration enclosure,
• a linear inductor contained in the refrigeration enclosure,
• said linear inductor including a core including a linear geometry consisting primarily of a highly permeable magnetic material and at least one conductor contained within the core along the linear geometry, and an insulator located between the core and the conductor to maintain electrical isolation between the core and the conductor,
• an input which provides power to the conductor, and
• an output which receives power from the conductor, and
• wherein said conductor comprises a high temperature superconducting material.

A superconducting inductor apparatus cryogenically cooled within a refrigerator unit, the inductor apparatus comprising:

• a linear inductor configured to be contained in a refrigeration enclosure,
• said inductor including a core including a linear geometry and a conductor,
• said core comprising a highly permeable magnetic material,
• wherein said conductor comprises a high temperature superconducting material, is electrically isolated from said linear geometry of the core by an insulator and is enclosed within a bore of the core along the linear geometry.

A superconducting inductor apparatus cryogenically cooled within a refrigerator unit, the inductor apparatus comprising:

• a linear inductor configured to be contained in a refrigeration enclosure,
• the linear inductor including a linear conductor enclosed within a bore of a linear core, the linear conductor having a high temperature superconducting material,
• the linear core including a highly permeable magnetic material, and
• a linear insulator electrically isolating the superconducting material of the linear conductor from the linear core.