Due to more and more electric devices, electrical power consumption in modern vehicles has increased. This development will continue within upcoming electrically powered cars. To ensure reliability, efficient measures have to be developed to handle increased power consumption and to avoid critical voltage drops within the vehicular power buses. Especially in critical driving situations, voltage drops can occur, which may reduce the functionality of affected loads. Within this paper, a power distribution management system is introduced, which is aimed to avoid critical voltage drops by predictive countermeasures without adding additional components to the vehicle's power net. For this purpose, a general model for the power distribution management system is developed. It reflects the physical power net setup as well as different cybernetic principles and methods. Based on this model, a prototype is implemented on a real time prototyping unit that is able to ensure voltage stability within a subnet consisting of three intelligent, cybernetic loads. The prototype is verified on a real power net test bench that consistsamong other thingsof the wiring harness and car body of an actual car. Thereby, it is shown, that the power distribution management system is effectively able to fight against critical voltage drops in vehicular power nets.
Voltage stabilization in vehicle power nets by power distribution management
EVS, Electric Vehicle Symposium, 26 ; 2233-2243
2012
11 Seiten, 6 Bilder, 20 Quellen
Aufsatz (Konferenz)
Englisch
Power Net Voltage Stabilization by Means of Predictive Power Distribution Management
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