Abstract

An adaptive linear-implicit time integration scheme applied to the simulation of electroquasistatic (EQS) and thermodynamic fields in the time domain is presented. Nonlinear conductive effects are taken into account in the EQS model, where the linearization is incorporated into the numerical time integration algorithm. As a consequence, in each time step, only one linear system of equations with varying right-hand sides is to be solved. This solution process can be accelerated using subspace projection techniques. Numerical results of EQS and coupled EQS/thermodynamic simulations of 3-D high-voltage (HV) applications are presented

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