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Simulation Based Hybrid Electric Vehicle Components Sizing and Fuel Economy Prediction by Using Design of Experiments and Stochastic Process Model
Technical Paper
2019-01-0357
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The aim of this study is to evaluate the Fuel Economy (FE) over the driving cycle for a 48 Volt P2 technology vehicle with different component ratings (battery and electric machine) in the hybrid powertrain, using simulation and Design of Experiments (DoE) tools. The P2 architecture was selected for this study based on an initial assessment of a wide number of possibilities, using the Ricardo “Architecture Independent Modelling (AIM)” toolset. This allows rapid evaluation of different powertrain options independently of a defined hybrid control strategy. For the vehicle with P2 architecture, a DoE test matrix of battery capacity and electric machine power rating was created. The test matrix was then imported into the simulation environment to perform the driving cycle FE simulations. Then, a 48 V P2 Hybrid Electric Vehicle (HEV) FE emulator model was created and interrogated using model visualisation and optimisation methods. For the HEV without an on-board charger (i.e. no Plug-in capability), legislation strictly requires the HEV to complete the driving cycle with a balanced battery State-Of-Charge (SOC) when doing the FE test. Therefore, the paper also compares two methods, optimisation and DoE, for calibrating the HEV control strategy to achieve charge neutrality, and discusses the pros and cons of these methods.
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Bao, R., Baxter, J., and Revereault, P., "Simulation Based Hybrid Electric Vehicle Components Sizing and Fuel Economy Prediction by Using Design of Experiments and Stochastic Process Model," SAE Technical Paper 2019-01-0357, 2019, https://doi.org/10.4271/2019-01-0357.Data Sets - Support Documents
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