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Title: Real-time optimal energy management of electrified engines
Authors: Zhao, Dezong
Winward, Edward
Yang, Zhijia
Stobart, Richard
Steffen, Thomas
Keywords: Electrified engines
Fuel economy optimization
Real-time energy management
Decoupling control
Dynamics analysis
Issue Date: 2016
Publisher: © IFAC (International Federation of Automatic Control) Published by Elsevier Ltd.
Citation: ZHAO, D. ...et al., 2016. Real-time optimal energy management of electrified engines. IFAC-Papers OnLine, 49(11), pp. 251-258.
Abstract: © 2016 The electrification of engine components offers significant opportunities for fuel economy improvements, including the use of an electrified turbocharger for engine downsizing and exhaust gas energy recovery. By installing an electrical device on the turbocharger, the excess energy in the air system can be captured, stored, and re-used. This new configuration requires a new control structure to manage the air path dynamics. The selection of optimal setpoints for each operating point is crucial for achieving the full fuel economy benefits. In this paper, a control-oriented model for an electrified turbocharged diesel engine is analysed. Based on this model, a structured approach for selecting control variables is proposed. A model-based multi-input multi-output decoupling controller is designed as the low level controller to track the desired values and to manage internal coupling. An equivalent consumption minimization strategy is employed as the supervisory level controller for real-time energy management. The supervisory level controller and low level controller work together in a cascade which addresses both fuel economy optimization and battery state-of-charge maintenance. The proposed control strategy has been successfully validated on a detailed physical simulation model.
Description: This paper was accepted for publication in the journal IFAC-Papers OnLine and the definitive published version is available at http://dx.doi.org/10.1016/j.ifacol.2016.08.038
Sponsor: This work was co-funded by Innovate UK (formerly the Technology Strategy Board UK),under a grant for the Low Carbon Vehicle IDP4 Programme (TP14/LCV/6/I/BG011L).
Version: Accepted for publication
DOI: 10.1016/j.ifacol.2016.08.038
URI: https://dspace.lboro.ac.uk/2134/24483
Publisher Link: http://dx.doi.org/10.1016/j.ifacol.2016.08.038
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

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