Modeling and simulation of electrical machines within a CCM framework

In this contribution, a modular and hierarchical framework for modeling and simulating electrical machines is proposed. Based on a modified variant of the so called component connection modeling, it is briefly outlined, how the general dynamical machine equations can be decomposed to a set of hierarchically interconnected sub-systems. As a main benefit of the modified component connection modeling, all intermediate signals, which represent the physical coupling of the modeled sub-systems, are accessible throughout the whole modeling and simulation process. This is illustrated by means of a simulation example of a salient pole synchronous machine, in which for example the electromagnetically produced torque can be directly observed in the simulator's output instead of computing it after the actual simulation run based on the dynamical state variables. Furthermore, it is demonstrated how important second order effects of electrical machines like saturation and skin effect can be considered systematically within the presented hierarchical framework. Both effects are illustrated by representative simulation examples.