環状巻鉄心の寸法比の交流磁気特性への影響

抄録

Tape wound toroidal cores are widely used as magnetic devices of electronic equipment and instrument. In the design of the equipments employing magnetic core, it is necessary to know the relation between magnetic properties of the core and magnetic properties of the material. This paper describes the effect of the dimention ratio of the core on the magnetic properties with sinusoidal flux waveform driving condition.
In carrying out the analysis, a mode analysis in which the magnetization characteristics is approximated by a piecewise-linear curve, is adopted. From the results obtained by the numerical analysis, local flux waveforms and exciting current waveforms of the core are shown. As a concequence, relation between iron loss and magnetizing apparent power of the core and the dimention ratio was derived. These results were confirmed by expriments.