Powder core, powder core manufacturing method, and method for estimating eddy current loss in powder core

The purpose of the invention is to set the single grain size equivalent diameter dS of soft magnetic metal powder, expressed by the following equation, to 210 [mu]m or lower to make the eddy current loss less than 150 W/kg at a frequency of 3,000 Hz, where dS indicates single particle size equivalen...

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Bibliographische Detailangaben
Hauptverfasser:	KATAYANAGI HIKARU, SHIMAZU EIICHIROU, MUNEDA NORIKAZU
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CASTING ELECTRICITY INDUCTANCES MAGNETS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER PERFORMING OPERATIONS POWDER METALLURGY SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS TRANSPORTING WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	The purpose of the invention is to set the single grain size equivalent diameter dS of soft magnetic metal powder, expressed by the following equation, to 210 [mu]m or lower to make the eddy current loss less than 150 W/kg at a frequency of 3,000 Hz, where dS indicates single particle size equivalent diameter [m] of the soft magnetic metal powder, dMN indicates the number average particle size [m] of the soft magnetic metal powder, and sigma indicates the standard deviation [m] of the particle sizes of the soft magnetic metal powder.