Supergrid Institute

Institut Polytechnique De Grenoble

Pierre Legendre

Pascal Tixador

Wolfgang Grieshaber

Christophe Creusot

Yang Yang

Raphaël Chassagnoux

Philippe Guuinic

A superconducting current limiting dipole (L), comprising a superconducting conductor (F) wound so as to form a two-wire coil extending in a single plane, a layer of insulator (Eto E, H) being arranged between two turns of said coil. The superconducting conductor (Cto C) consists of at least four separate superconducting cables (Cto C) wound in parallel and arranged in at least two pairs, each of the pairs being formed by two of said superconducting cables (Cto C) that are electrically connected to one another in a first connection area, and, in a second connection area, one of the superconducting cables of one pair is electrically connected to one of the superconducting cables of the other pair, the other superconducting cable of each pair being connected to an electrical connection terminal (T, T) or to an additional pair.

Superconducting current limiting dipole, comprising at least four superconducting cables

A superconducting current limiter having at least one superconducting conductor () wound so as to form a coil () extending in a single plane and connecting a first electrical connection terminal to a second electrical connection terminal, an electrically insulating spacer () being arranged between two turns of the coil. The superconducting conductor () consists of at least two separate superconducting cables () wound in parallel and whose ends are electrically connected by the first electrical connection terminal and by the second electrical connection terminal, respectively. An electrically conductive spacer () is arranged between two of said separate superconducting cables (), this electrically conductive spacer () being able to be traversed by a cooling fluid.

Superconducting current limiter with electroconductive spacer

A current cut-off device for high-voltage DC current includes: between a primary point and an intermediate point, a primary diversion member and, in parallel, a primary surge protector; a secondary mechanical switch between the intermediate point and the secondary point; a main resonator whose terminal is linked to the secondary point; a main oscillation switch; a main surge protector, in parallel with a main capacitance of the main resonator; wherein the main oscillation switch includes three terminals linked respectively to the primary point, to the intermediate point and to the other terminal of the main resonator; the changeover switch can switch at least between three direct, inverting and isolated states.

Current cut-off device for high-voltage direct current with resonator and switching

The invention proposes a high-voltage direct current cut-off device, comprising: in series, a cut-off device and a current limiter; an accumulation line in parallel with the current limiter, an oscillating circuit, in parallel with the cut-off apparatus, comprising an oscillation control switch and having an inductance wherein the accumulation line includes at least two accumulation capacitors, and in that the oscillation line extends from a branch connection point of the accumulation line situated between the two accumulation capacitors, determining a secondary segment of the accumulation line connected to the main conduction line between the current limiter and the main cut-off apparatus so as to form part of the oscillating circuit.

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Villeurbanne, France

Pierre Legendre