Power feeding facility and its cable for high-frequency current
AssigneeDaifuku Co., Ltd.
InventorShuzo Nishino
Life of this patent
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Abstract
A cable for use in a high-frequency current feeding equipment constituted by passing an inner bundle (A) of wires (2) disposed at the same distance from the center of multiconductor cable (1) and outer bundles (B and C) of wires (3) through a ferrite (5) in such a way that the ampere-turns thereof are the same. The counter-electromotive force generated because of the difference of the spatial arrangement between the inner wires (2) and the outer wires (3) caused when stranded is canceled, and the current phases and current values of the wires (2 and 3) are forced to be exactly the same. Therefore, an increase in the resistance due to the proximity effect is prevented, and thereby the multiconductor cable (1) can be used as a high-frequency current cable.
Claims4
A high frequency current multiconductor cable, comprising a plurality of covered electric wires fed with high frequency single-phase current being divided and allowed to flow in each of said wires, said wires each comprising a conductor and a cover of said conductor, characterized in that
- a magnetic body having a through-hole is provided, and
- the electric wires equi-distanced from a center of said cable are bundled or grouped and each bundle or group of electric wires is allowed to pass through said through-hole in such a manner that ampere-turns or current densities become the same, whereby current phases and current values of said plurality of wires are forced to be substantially the same.
Dependencies are inferred from the claim text.