A computationally efficient method for studying the behaviour of complex systems containing thin wires

Wires are the fundamental means of coupling electromagnetic energy to and from electrical equipment. It is therefore of great importance to the modelling of practical EMC phenomena that any modelling method used should efficiently model wires and wire-like structures. Transmission-line modelling (TLM) is a method used extensively for studying the behaviour of structures in order to derive their EMC performance. There has recently been an upsurge in the interest in efficient methods for wire modelling. This paper extends a general method for the accurate modelling of wires to the modelling of thin wires (wires with diameters smaller than the local node size) placed centrally within a node. A mechanism for modelling wires displaced from the centre of a node is also discussed. Results obtained from the TLM models are validated against those obtained from experimental studies