Recently, there has been a growing trend toward reducing society's carbon footprint. In the field of energy, development of clean power generation systems, such as solar and wind generators, have been promoted. Electric vehicles are also replacing petrol vehicles in the automotive industry, and energy-saving electrical appliances are in demand more than ever. Due to this trend, small and powerful power-supply devices with better conversion efficiency are increasingly demanded, and accordingly, high performance inductors are required. Thus far, the authors have engaged in the development of powder magnetic cores, which are made by press compacting soft magnetic powder coated with insulating film, for use in motors and solenoid valves. In this study, the technology accumulated in the development of these cores has been successfully applied to that of an inductor core. The developed inductor core shows superior properties to ferrite and dust cores which are commonly used for inductors. In this paper, the advantageous properties of the developed core and the result of application to the inductor are reported.
展开▼
