Browse Prior Art Database

Toroidal Matrix Fault Current Limiter (TMFCL)

IP.com Disclosure Number: IPCOM000124286D
Publication Date: 2005-Apr-14
Document File: 2 page(s) / 115K

Publishing Venue

The IP.com Prior Art Database

Related People

SuperPower, Inc.: OWNER

Abstract

The matrix-type fault current limiter (MFCL) in its current configuration uses solenoid-type limiting and trigger coil. These are susceptible to mutual coupling, which may alter the current sharing and trigger points of adjacent elements. If the HTS elements are built in a toroidal shape, with toroidal trigger coils around them, then coupling to adjacent coils is strictly limited. In addition, the limiting coils being toroidal as well, will not produce interference with other coils and elements. Special designs are used in the construction of the toroidal HTS element and the triggering coil around it to ensure proper electrical and thermal performance.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 53% of the total text.

Page 1 of 2

       Superpower, Inc. Publication of Intellectual Property

www.ip.com

Date: 10/24/02 ID#: 97

Publication Title: Toroidal Matrix Fault Current Limiter (TMFCL)

Author(s)/Inventor(s): SuperPower, Inc.

450 Duane Ave., Schenectady, NY 12304 Tel.: 518-346-1414 e-mail: superpower@igc.com

Document Abstract:

The matrix-type fault current limiter (MFCL) in its current configuration uses solenoid-type limiting and trigger coil. These are susceptible to mutual coupling, which may alter the current sharing and trigger points of adjacent elements. If the HTS elements are built in a toroidal shape, with toroidal trigger coils around them, then coupling to adjacent coils is strictly limited. In addition, the limiting coils being toroidal as well, will not produce interference with other coils and elements. Special designs are used in the construction of the toroidal HTS element and the triggering coil around it to ensure proper electrical and thermal performance.

The Invention:

Basis of the invention: A superconducting fault current limiter utilizes a toroidal-shaped HTS element, trigger coil and limiting coil (shunt). Such an arrangement can be used as a basic module in matrix-type fault current limiter, such as one described in US patent 6,664,875. The toroidal-shaped trigger coil and limiting coil has the advantage, over the normal solenoid coil geometry, of having less magnetic coupling amongst the neighboring modules to achieve a more uniform current sharing.

Detail of the invention: The HTS element may have a corrugated surface in order to have sufficient cooling. The element may be mad...