Quasi-stationary AC analysis using phasor description with modelica

The investigation of large technical systems by simulating long time periods requires very effective methods. If only sinusoidal quantities occur in the electrical domain, phasor analysis can be used to describe the steady-state behaviour of this part of the physical system. In this paper, modelling of AC circuits and electromechanical drives with electrical AC subsystems is presented using the well-known phasor method within Modelica. To this end, some fundamentals concerning phasor description are repeated before a possible implementation of AC circuits within Modelica is proposed. This implementation uses a new Modelica-library which is still under construction. The main content of this library is introduced. Furthermore, some statements are given concerning the library's usage when coupling with other domains or with transient submodels, or when switching between transient and phasor analysis, respectively. Finally, three examples are presented