Abstract
Keywords
Electrical architecture, dual voltage powernet, simulation, energy balance, powernet quality
Abstract
Power demands in automotive electrical systems have significantly increased for the last few years, and this trend will soon lead to the same solution decided in the late 50s when 12V had replaced 6V. Buth this new transition will need a global vehicle approach especially in energy management techniques, which also takes into account transient phenomena.
Moreover, the answer to these questions is really specific to each car manufacturer. That is the reason why PSA automotive has decided, through a Lears partnership, to develop a complete methodology, including numerical simulation. This methodology must achieve to define the best-in-class electrical architecture of different alternatives, once the final level of performance (in terms of equipment or functionality) has been estimated.
Applied methodology starts from an estimated level of performance (in terms of equipment or functionality) and ends to the optimized electrical and electronic architecture (power distribution, electronic units, protections, etc) leading to appropriate terms of energy balance, transient, fault analysis and safety. It goes through the benchmarking of different potential architectures, which covers, on one side, different alternatives for the initial introduction of 42V and, on the other side, all specific technical issues arising from the coexistence of two power busses in a unique architecture.
Relevant results from this virtual analysis based on the own specific model of a dual voltage network are shown in this paper, covering technical to in-vehicle prototype.