Engenharia assistida por computador aplicada ao desenvolvimento de conversores estáticos com ênfase em elementos magnéticos

Abstract

The analysis of magnetic devices requires knowledge of electromagnetic fields inside and around

of the element. The Maxwell’s equations enable a temporal and spatial analysis of electro- magnetic fields. Typically, the solutions to these equations by classical analytical methods are

extensive and laborious due to the complexity in the device’s geometry or the non-linearity of the materials. Finite element analysis (FEA), used in computer-aided engineering (CAE), is a numerical procedure that makes possible approximate solutions of boundary value problems of

differential equations. In this method, the region of space that delimits the problem is subdi- vided into a finite number of geometric elements, called finite elements, where the equations

of the elements locally approximate the more complex original partial differential equations.

The connection of these elements results in a set of algebraic equations that can be solved nu- merically by means of optimization methods and matrix algorithms. Thus, by the simulation,

is possible to predict the real behavior, without the need to build prototypes. This work will

contemplate the steps involved in the design of an integrated AC/DC converter with power fac- tor correction stage. A project structure for the converter and its magnetic elements will be

addressed, validated by CAE tools developed on Ansys Maxwell ® simulation platform.