Stability Analysis of a Two-Voltage Vehicle Electrical System Based on Co-Simulation Virtual Vehicle Competence Center

Format:

Conference/Event

Author/Creator:

Zehetner, Zehetner, author.

Contributor:

Lu, Wenpu

Watzenig, Daniel

Conference Name:

SAE 2012 World Congress & Exhibition (2012-04-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

In the automotive industry a strong trend towardselectrification is determined. It offers the possibility of a moreflexible actuation of the vehicle systems and can therefore reducethe fuel consumption and CO₂ emissions for modern vehicles. This isnot only valid for typical drive train components, e.g., for hybridor pure electric vehicles, but also for chassis components andauxiliaries like power-steering pump or air-conditioningcompressor. However, a further electrification is limited by the14V power net of conventional passenger cars. The high electriccurrents required by new/additional electrical components may leadto increased line losses and instability in the vehicle electricalsystem. With the introduction of a medium voltage level (60V)these problems can be circumvented. Nevertheless, the complexity ofthe vehicles with strong electrification and several voltage levelsalso raise the effort of design and development due to themultidisciplinary nature of the electrified vehicle systems.To meet the challenge of the problem mentioned above, thepresented work proposes a modern co-simulation approach to make thedesign and evaluation of a vehicle electrical system moreefficient. The simulation process becomes more modular and thestrength of the domain-specific simulation tools can be optimallyutilized. On the example of a hybrid electric vehicle (HEV)concept, simulation models from different fields of expertise(electrics, electronics, mechanics and thermodynamics) areintegrated into an overall vehicle simulation model. The specificsimulation tools are coupled via the co-simulation platform ICOS(Independent Co-Simulation) developed at the Virtual VehicleCompetence Center (ViF). Following that, the virtual prototype caris used to analyze the stability behavior of various two-voltagevehicle electrical system configurations including an electricdouble-layer capacitor (EDLC) as energy buffer or activestabilization with an additional DC/DC converter

Notes:

Vendor supplied data

Publisher Number:

2012-01-0012

Access Restriction:

Restricted for use by site license