Optimization of the Series-HEV Control with Consideration of the Impact of Battery Cooling Auxiliary Losses 2014-01-1904
This paper investigates the impact of battery cooling ancillary losses on fuel economy, and optimal control strategy for a series hybrid electric truck with consideration of cooling losses. Battery thermal model and its refrigeration-based cooling system are integrated into vehicle model, and the parasitic power consumption from cooling auxiliaries is considered in power management problem. Two supervisory control strategies are compared. First, a rule-based control strategy is coupled with a thermal management strategy; it controls power system and cooling system separately. The second is optimal control strategy developed using Dynamic Programming; it optimizes power flow with consideration of both propulsion and cooling requirement. The result shows that battery cooling consumption could cause fuel economy loss as high as 5%. When dynamic programming coordinates control of the powertrain and the cooling system in an optimal way, the fuel consumption penalty due to cooling losses is reduced to 3.7%, and battery duty cycle becomes milder. Finally, rules are extracted from the optimal strategy, and a refined rule-based strategy is presented.
Citation: Zhang, X., Ivanco, A., Tao, X., Wagner, J. et al., "Optimization of the Series-HEV Control with Consideration of the Impact of Battery Cooling Auxiliary Losses," SAE Int. J. Alt. Power. 3(2):234-243, 2014, https://doi.org/10.4271/2014-01-1904. Download Citation
Xueyu Zhang, Andrej Ivanco, Xinran Tao, John Wagner, Zoran Filipi
Clemson-ICAR, Clemson Univ
SAE 2014 World Congress & Exhibition
SAE International Journal of Alternative Powertrains-V123-8EJ, SAE International Journal of Alternative Powertrains-V123-8