A fast simulation technique for the power electronic converters

In this study, a fast simulation technique is proposed for the analysis of power electronic circuits. After switching, these circuits behave like a linear circuit. Therefore, linear circuit analysis methods can be used. In the simulation, capacitors and inductors are replaced by voltage and current sources respectively, whose values are determined by their current and voltages in the previous step. The method is based on solving a system of algebraically modified nodal equations at each integration step. The technique requires only DC analysis. The writing or solving of time-differential equations or Laplace transform inverses are not required. Thus, the simulation is fast and the simulation time is essentially the same as for a linear, time-invariant circuit of the same complexity. A simulation algorithm is given and an example is included.