ABSTRACT

Due to the large industrial progress toward the end of the last century, different techniques involving time-dependent electromagnetic fields studies were incorporated to study industrial problems, like those issued from the digitalization of the control of both rotating and static electrical machines. The quasi-static electromagnetic field, modeled by finite element method, transforms Maxwell’s second equation in the integral form to a time-dependent algebraic equations system. For solving it, the problem requires not only a time-integration procedure but also the introduction of boundary conditions to the nodes at each step. This chapter discusses the eddy current effect due to step voltage application in a coil, as well as the concept of alternating current steady-state magnetodynamics by using a numerical example.