Autonomous load shutdown mechanism as a voltage stabilization method in automotive power nets

Florian Ruf, Andreas Barthels, Gregor Walla, Michael Winter, Tom P. Kohler, Hans Ulrich Michel, Joachim Froeschl, Hans Georg Herzog

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

12 Scopus citations

Abstract

The power demand in 14 V automotive power buses has steadily increased in recent years. Due to the high peak power of electrified chassis control systems, significant voltage drops can occur within the power net. These voltage drops can lead to malfunctions of ECUs (Electronic Control Units). This paper describes the influence of an autonomous load shutdown mechanism on voltage stability in automotive power buses. The mechanism is applied to heating systems, which feature a combined peak power demand of over 1 kW in modern luxury class vehicles. A temporary shutdown of these heating systems for a few seconds is unnoticeable for the costumer due to large time constants of these systems. The influence of the mechanism on the voltage stability is investigated within a physical power net simulation. It is shown, that the mechanism allows the negligence of power-hungry heating systems in the design process of the power bus regarding peak power scenarios.

Original languageEnglish
Title of host publication2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012
Pages1261-1265
Number of pages5
DOIs
StatePublished - 2012
Event2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012 - Seoul, Korea, Republic of
Duration: 9 Oct 201212 Oct 2012

Publication series

Name2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012

Conference

Conference2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012
Country/TerritoryKorea, Republic of
CitySeoul
Period9/10/1212/10/12

Keywords

  • Vehicle power net
  • autonomous mechanism
  • cybernetic system
  • voltage stability

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