Steady state simulation of electrical circuits

The authors describe a new method of computing the steady state solution of power electronic systems. The method is a modification of the collocation method, which was originally developed to solve boundary value problems. This method was implemented in the source code of the new steady state simulation program Shore. The modified collocation method solves the problem arising from the simulation of electronic power conversion systems. Often the time constants and the operating frequencies of these systems can be very different. In this case it is not possible to achieve an efficient analysis of these circuits with a conventional simulator such as Spice. The proposed method allows lowering the required CPU time. Simulation results and CPU times are reported and compared to the Spice results