This paper deals with three dimensional A-¢ analysis of a newly developed cylinder-type flux concentration apparatus. We have already examined and analyzed several types of such apparatus, which utilize the flux concentration effect of eddy currents. [1][2][3] The new model treated here, attains compactness in size and high efficiency in flux concentration by assembling a conducting plate just inside one or several excitation windings. A new four-component direct finite element calculation method is applied to the present analysis, and three dimensional distributions of the flux density; the eddy current and the scalar potential are obtained successfully. The divided direct calculation method is discussed in comparison with our former iterative method.
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