ELECTROMAGNETIC MODELING OF RETURN CONDUCTOR CONFIGURATIONS USING THE FINITE ELEMENT METHOD

摘要

Return conductor networks are typically used to provide a low inductance return path back to the generator during most full vehicle tests and tests of other large objects. There are several commonly used methods of return networks, the most popular of which are coaxial return arrays and ground planes. During the construction of these arrays, practical considerations often take precedence over the intended design due to facility constraints, time, materials, and accessibility issues. While conducting tests, it is not uncommon for wires to be moved, droop, or fall, and the impact of these changes on measurements and current flow is not well understood. Utilizing the finite element method in COMSOL Multiphysics, these effects can be accurately calculated. In this work, a sample wing box is constructed in COMSOL with several ribs and spars. A coaxial return array and ground plane return network are modelled, with common routing and configuration defects analyzed.