Object oriented modeling of a multiple-input multiple-output flyback converter in Dymola

Abstract

Modeling of power electronic converters does not lend itself to many traditional circuit simulators such as SPICE. The state equations of a converter change with switching behavior, also called events, which must be determined using an iterative solution. Diode commutation is a prime example that occurs in nearly all complex power electronic circuits. The language examined in this paper, Modelica, was developed for solution of systems with discrete events such as switching. A multiple-input, multiple-output (MIMO) flyback converter has been used as an example, and compared to experimental results.