Optimal design of transient eddy current systems driven by voltage source

Abstract

Abstruct -The structure and the characteristics of optimal design procedure of electromagnetic devices are examined and the three different approaches to design sensitivity derivation is reviewed. For the shape design problems of the transient eddy current systems driven by voltage sources, the design sensitivity i s derived in an explicit form to the design variables using the finite element algebraic system equation and the adjoint variable m d o d .The original state variable eqnation is an initial value problem, but the adjoint variable equation is derived as a terminal value problem. And both equations are solved using time-stepping finite element method. As a numerical example, the coil-positioning problem of an induction heating system is tested and the proposed algorithm is validated.

Analytical model for estimation of eddy current and power loss in conducting plate and its application

“…However, the heat generated by the eddy current is utilized in various applications like induction furnace, heat treating, melting, hardening, brazing, etc. [3][4][5][6]. The estimation of the eddy current is also used for nondestructive testing of conducting materials.…”