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Control Analysis and Model Validation for BMW i3 Range Extender
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 28, 2017 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
The control analysis and model validation of a 2014 BMW i3-Range Extender (REX) was conducted based on the test data in this study. The vehicle testing was performed on a chassis dynamometer set within a thermal chamber at the Advanced Powertrain Research Facility at Argonne National Laboratory. The BMW i3-REX is a series-type plug-in hybrid range extended vehicle which consists of a 0.65L in-line 2-cylinder range-extending engine with a 26.6kW generator, 125kW permanent magnet synchronous AC motor, and 18.8kWh lithium-ion battery. Both component and vehicle model including thermal aspects, were developed based on the test data. For example, the engine fuel consumption rate, battery resistance, or cabin HVAC energy consumption are affected by the temperature. Second, the vehicle-level control strategy was analyzed at normal temperature conditions (22°C ambient temperature). The analysis focuses on the engine on/off strategy, battery SOC balancing, and engine operating conditions. Next, we analyze the differences in control strategy based on the environmental conditions (−7°C or 35°C ambient temperatures) or vehicle state (soaked or warmed-up vehicle). Finally, the validation of the developed model based on Autonomie, a high-fidelity, forward-looking vehicle simulation tool, is presented. The engine fuel consumption and battery SOC results are within test-to-test variability in most thermal conditions.
CitationJeong, J., Lee, W., Kim, N., Stutenberg, K. et al., "Control Analysis and Model Validation for BMW i3 Range Extender," SAE Technical Paper 2017-01-1152, 2017, https://doi.org/10.4271/2017-01-1152.
Data Sets - Support Documents
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- Kim , N. , Duoba , M. , Kim , N. , and Rousseau , A. Validating Volt PHEV Model with Dynamometer Test Data Using Autonomie SAE Int. J. Passeng. Cars - Mech. Syst. 6 2 985 992 2013 10.4271/2013-01-1458
- Kim , N. , Jeong , J. , Rousseau , A. , and Lohse-Busch , H. Control Analysis and Thermal Model Development for Plug-In Hybrid Electric Vehicles SAE Int. J. Alt. Power. 4 2 260 268 2015 10.4271/2015-01-1157
- Jeong , J. , Karbowski , D. , Rousseau , A. , and Rask , E. Model Validation of the Honda Accord Plug-In SAE Technical Paper 2016-01-1151 2016 10.4271/2016-01-1151
- Lohse-Busch , H. , Duoba , M. , Rask , E. , Stutenberg , K. Ambient Temperature (20°F, 72°F and 95°F) Impact on Fuel and Energy Consumption for Several Conventional Vehicles, Hybrid and Plug-In Hybrid Electric Vehicles and Battery Electric Vehicle SAE Technical Paper 2013-01-1462 2013 10.4271/2013-01-1462
- Autonomie http://www.autonomie.net/ Oct. 2016
- BMW i3 Range Extender To Offer Up to 87 More Miles, Decreases Performance - Inside EVs http://insideevs.com/bmw-i3-range-extender-to-offer-up-to-87-more-miles-decreases-performance/ Oct. 2016
- 2014 BMW i3 REX http://www.fueleconomy.gov/feg/Find.do?action=sbs&id=3527 9 Oct. 2016
- Kim , N. , Rousseau , A. , Lee , D. , and Lohse-Busch , H. Thermal Model Development and Validation for 2010 Toyota Prius SAE Technical Paper 2014-01-1784 2014 10.4271/2014-01-1784
- Jehlik , F. and Rask , E. Development of Variable Temperature Brake Specific Fuel Consumption Engine Maps SAE Technical Paper 2010-01-2181 2010 10.4271/2010-01-2181
- Hu , X. , Li , S. , and Peng , H. A comparative study of equivalent circuit models for Li-ion batteries J. Power Sources 198 359 367 2012 10.1016/j.jpowsour.2011.10.013