Dynamical system modeling with power flow oriented methods

POG (Power Oriented Graph), BG (Bond Graph) and EMR (Energetic Macroscopic Representation) are modern methods based on the power exchange between partial systems as a key element for the basic modeling approach. The aim of this paper is to highlight the advantage of these modeling methods. Similarities and differences between modeling methods of dynamic systems using Power Flow representations will be shown via examples. Relationships between these representations will be given. Basic electrical machines representing electromechanical conversion are modeled via Power Flow methods and exemplify application and benefits of these methods. Furthermore examples elastic shaft and DC motor illustrate the connection of partial models and the energy efficiency computation based on this modeling approach.