Coupling Interfaces and their Impact in Field/Circuit Co-Simulation

摘要

Co-simulation is an important approach for coupled systems in time domain analysis. Dealing with coupled systems, convergence depends on the computational order in which the parts are solved and on certain contraction properties. This paper takes a closer look at the coupling structure of field/circuit coupled problems and introduces a new approach, where we can derive information about stability and contraction directly from the network structure, without informations regarding the embedded EM device or the circuit part. When co-simulation is applied to embedded EM devices, the standard approach is to distinguish clearly between the field and circuit part. However, we show that cutting at the EM device boundary does not always works best and demonstrate that using a specific interface for coupling, co-simulation reached better properties, e.g. concerning the computational effort.