PHEV Energy Management: A Comparison of Two Levels of Trip Information

2012-01-0745

04/16/2012

Event
SAE 2012 World Congress & Exhibition
Authors Abstract
Content
Plug-in hybrid electric vehicles (PHEVs) have rechargeable energy storage which can be used to run the vehicle on shorter range on electricity from the grid. In the absence of a priori information about the trip, a straightforward strategy is to first deplete the battery down to a minimum level and then keep the state of charge (SoC) around this level. However, largely due to the battery losses, the overall fuel economy can be improved if the battery is discharged gradually. This requires some a priori knowledge about the trip.
This paper investigates the tradeoff between improved fuel economy and the need for a priori information. This investigation is done using a variant of telemetry equivalent consumption minimization strategy (T-ECMS) which is modified to be used for a PHEV. To implement this strategy, several parameters need to be tuned based on an assumption of the future trip. By studying two different levels of details, the tradeoff between fuel economy and a priori information is evaluated. It is shown that the proposed strategy improves the fuel economy considerably even when general information is available. However, increase in the details of the a priori information improves the fuel economy even further.
Meta TagsDetails
DOI
https://doi.org/10.4271/2012-01-0745
Pages
8
Citation
Pourabdollah, M., Larsson, V., johannesson, L., and Egardt, B., "PHEV Energy Management: A Comparison of Two Levels of Trip Information," SAE Technical Paper 2012-01-0745, 2012, https://doi.org/10.4271/2012-01-0745.
Additional Details
Publisher
Published
Apr 16, 2012
Product Code
2012-01-0745
Content Type
Technical Paper
Language
English