VHDL-AMS to Support DAE-PDE Coupling and Multilevel Modeling

With the increasingly high level of electrical system integration, the modeling of both the system behavior and the detailed physics of its elements becomes necessary. VHDL-AMS language allows to describe a range of physical systems, such as electro-magnetic devices, using a unified design approach to simulate a complete system. In addition, the most important constraint in the hierarchical modeling of the design cycle is the difficulty to use the same language or tool for the whole modeling steps and define a single set of tests for each description level. VHDL-AMS can be used as unified language for multilevel modeling, but it cannot support the description of some physical phenomena such local ones. The aim of the paper is to achieve the behavioral and the detailed modeling of multiple energy domains using VHDL-AMS, and their integration in the system environment. It proposes solutions to extend the computation capability of this language, based on computer-aided coupling strategies.