Abstract
Simulation models of magnetic sheets are proposed. The partial fraction decomposition for trigonometric functions is used to obtain the models in the form of Foster I and II realizations, while the formulas for Bessel functions are used to obtain the models in the form of Cauer I. It is shown that the convergence speed of Cauer realization is much faster than that of Foster's. It implies that the circuit behaviors with wide frequency range can be evaluated by using small number of circuits components. Cauer II realization is obtained by transforming impedance functions given by Cauer I. It is shown that the flux behaviors in the magnetic sheets can be properly estimated by Cauer II models. Simulation models for magnetic wires are also presented by the methods mentioned above. The proposed method is applied to the analysis of inverter surge voltage. The results show that the proposed method is adequate for practical use.
