Optimization of Transformer Tank Shield Model using 3-D Finite Element Method

Abstract

It is important to examine the problems in applying the optimal design method to the practical design of magnetic devices. The “Investigation Committee of IEE of Japan” has proposed “tank shield model” for comparing optimal design methods. This is a benchmark model for reducing the volume of shielding plate and for constraining the eddy current density in the tank within a specified value.
In this paper, the tank shield model is optimized using the Rosenbrock's method and the finite element method. The effectiveness of the technique for making the pile in the z-direction of 2-D mesh of quadrilateral element in generating hexahedral elements for 3-D optimization is discussed. It is shown that the reasonable results that satisfy the specified constraints can be obtained using the Rosenbrock's method within the acceptable CPU time. The experimental verification is also carried out.