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Energy Management Options for an Electric Vehicle with Hydraulic Regeneration System
Technical Paper
2011-01-0868
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Energy security and climate change challenges provide a strong impetus for investigating Electric Vehicle (EV) concepts. EVs link two major infrastructures, the transportation and the electric power grid. This provides a chance to bring other sources of energy into transportation, displace petroleum and, with the right mix of power generation sources, reduce CO₂ emissions. The main obstacles for introducing a large numbers of EVs are cost, battery weight, and vehicle range. Battery health is also a factor, both directly and indirectly, by introducing limits on depth of discharge. This paper considers a low-cost path for extending the range of a small urban EV by integrating a parallel hydraulic system for harvesting and reusing braking energy. The idea behind the concept is to avoid replacement of lead-acid or small Li-Ion batteries with a very expensive Li-Ion pack, and instead use a low-cost hydraulic system to achieve comparable range improvements. A Matlab/SIMULINK model was developed to simulate a baseline EV truck with a series wound DC motor and lead-acid batteries. The simulation was validated with tests at the US EPA National Vehicle and Fuel Efficiency Lab. Subsequently, the hydraulic pump/motor and accumulator models were integrated to create an EV-Hydraulic Hybrid and the simulation was used to explore tradeoffs related to improving battery health, reducing the overall energy demand, and increasing the range. Preliminary strategy was focused on maximizing the driving range, but insight obtained through the analysis of interactions in the system-enabled refinements that significantly benefit battery health without compromising electric range.
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Woon, M., Lin, X., Ivanco, A., Moskalik, A. et al., "Energy Management Options for an Electric Vehicle with Hydraulic Regeneration System," SAE Technical Paper 2011-01-0868, 2011, https://doi.org/10.4271/2011-01-0868.Also In
References
- Xebra Electrical Truck Technical Specifications and MSRP 2010 http://www.zapworld.com/zap-xebra-electric-truck
- Jackey, R. “A Simple, Effective Lead-Acid Battery Modeling Process for Electrical System Component Selection,” SAE paper 2007-01-0778 Warrendale, PA, USA 2007
- Caumont, O. Le Moigne, P. Rombaut, C. Muneret, X. Lenain, P. “Energy Gauge for Lead-Acid Batteries in Electric Vehicles,” IEEE Transactions on Energy Conversion 15 3 354 360 2000
- Pourmovahed, A. Beachley, N. Fronczak, F. “Modeling of a Hydraulic Energy Regeneration System- Part I: Analytical Treatment,” Journal of Dynamic System, Measurement, and Control 114 155 159 March 1992
- Lin, C.-C. Filipi, Z. Wang, Y. Louca, L. et al. “Integrated, Feed-Forward Hybrid Electric Vehicle Simulation in SIMULINK and its Use for Power Management Studies,” SAE Technical Paper 2001-01-1334 2001 10.4271/2001-01-1334
- Culpin, B. Rand, D. “Failure modes of lead/acid batteries,” Journal of Power Sources 36 415 438 1991
- Pavlolv, D. Bashtavelova, E. “A Model of the Positive Lead-Acid Battery Active Mass,” Journal of Electrochemical Power Sources 131 7 1468 1476 1984
- “Multi-Path Transportation Futures Study: Vehicle Characterization and Scenario Analyses,” July 2009 http://www.transportation.anl.gov/pdfs/TA/613.PDF
- ANL Autonomie Cost Modeling: Module 9 Hydraulic Propulsion System November 2010