Implementation of an Extended Vehicle Model Architecture in Modelica for Hybrid Vehicle Modeling: Development and Applications

Abstract

This paper outlines the development and implementation of a vehicle model architecture for hybrid v ehicle modeling. The architecture is based on the V ehicleInterfaces library with significant extensions to enable more flexible, configurable implementations for hybrid vehicle applications. Additional elemen ts are added to the interfaces and architecture to all ow more flexible electrical system modeling and more detailed thermal modeling. Four different hybrid vehicles are implemented as sample applications using the newly-developed architecture. The scheme and canonical library structure for the component, subsystem, and system models is also discussed to document a mechanism for user-friendly handling of parameterized models and fully-implemented models in a complex model architecture with extensive model data. Models and simulation results are shown for the Toyota Prius, Lexus RX400h, a concept hybrid sedan, and a concept hybrid sport utili ty vehicle (SUV). Extensions to VehicleInterfaces are also proposed to enhance the library to include add itional features to improve support for future conve ntional and hybrid vehicle modeling efforts.