Development of High Density and Low Iron-Loss Soft Magnetic Powder Core

摘要

Recently, there's been a growing trend toward reducing society's carbon footprint. Due to this trend,electric drive mechanisms and electronic control mechanisms have been adopted in products such asautomobiles and home electric appliances. One material forming the core of electric drive andelectronic control mechanisms is soft magnetic material for alternating current (AC) applications, whichis used in electromagnetic conversion components such as motors, transformers and sensors. In thisstudy, the authors have developed the soft magnetic powder core which is made by compactingmagnetic powder coated with insulating film. It has high electrical resistance, and therefore exhibitsnice electromagnetic conversion characteristics in the high-frequency band. This paper reports on themethod of producing the developed core which has both high density and low iron loss.