MAGNETIC-FIELD AND CURRENT DISTRIBUTION IN METALLIZED CAPACITORS

We attempt to establish the mathematical expression of the current and the magnetic field in a metallized capacitor. The expression of the i mpedance of this capacitor is also presented. The distribution of the current is discussed through the variation of the capacitor impedance and compared to experimental ones. There is good agreement between exp erimental and theoretical results. The analytical expressions of the m agnetic field and the current also show a dependence on parameter delt a(2) akin to the skin depth in conductors. delta(2) also depends on fr equency. When delta(2) is smaller than the outer radius of the capacit or, the current distribution becomes inhomogeneous.