REACTOR CORE

PROBLEM TO BE SOLVED: To provide a reactor core which makes possible to ease the reduction in inductance in a current region over a rating current in a reactor with a silicon steel plate laminated core.SOLUTION: A reactor core comprises: a laminated core 1 formed by laminating silicon steel plates e...

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Bibliographische Detailangaben
Hauptverfasser: KOSEKI SHINJI, HIRATANI TATSUHIKO, SHIGA NOBUISA
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a reactor core which makes possible to ease the reduction in inductance in a current region over a rating current in a reactor with a silicon steel plate laminated core.SOLUTION: A reactor core comprises: a laminated core 1 formed by laminating silicon steel plates each having a thickness of 0.35 mm or less and a Si concentration within a range of 3.0-7.0 mass%; a dust core layer 2a provided in a center portion in a direction of lamination of the laminated core; and a dust core layer 2b provided at one or more than one point in a plane perpendicular to a direction of magnetization of the laminated core. Thus, it becomes possible to ease the reduction in inductance in a current region over a rating current in a reactor with a silicon steel plate laminated core. 【課題】珪素鋼板積層コアを用いたリアクトルにおいて、定格電流を超えた電流領域でのインダクタンスの低下の緩和が可能なリアクトルコアを提供すること。【解決手段】本発明のリアクトルコアは、板厚が0.35mm以下、Si濃度が質量%で3.0〜7.0%の範囲内にある珪素鋼板を積層することによって形成された積層コア1と、積層コアの積層方向中央部に設けられたダストコア層2aと、積層コアの磁化方向に垂直な面の1箇所または複数箇所に設けられたダストコア層2bと、を備える。これにより、珪素鋼板積層コアを用いたリアクトルにおいて、定格電流を超えた電流領域でのインダクタンスの低下の緩和が可能となる。【選択図】 図5