Efficiency improvement of a novel dual motor powertrain for plug-in hybrid electric buses

Nguyen, CT; Walker, PD; Zhang, N; Ruan, J

Efficiency improvement of a novel dual motor powertrain for plug-in hybrid electric buses

Nguyen, CT Walker, PD Zhang, N

Ruan, J

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Publisher:: SAGE PUBLICATIONS LTD
Publication Type:: Journal Article
Citation:: Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 2020, 234, (7), pp. 1869-1882
Issue Date:: 2020-06-01

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Field	Value	Language
dc.contributor.author	Nguyen, CT
dc.contributor.author	Walker, PD
dc.contributor.author	Zhang, N https://orcid.org/0000-0001-6408-0044
dc.contributor.author	Ruan, J https://orcid.org/0000-0003-4481-4893
dc.date.accessioned	2020-12-23T08:02:01Z
dc.date.available	2020-12-23T08:02:01Z
dc.date.issued	2020-06-01
dc.identifier.citation	Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 2020, 234, (7), pp. 1869-1882
dc.identifier.issn	0954-4070
dc.identifier.issn	2041-2991
dc.identifier.uri	http://hdl.handle.net/10453/144943
dc.description.abstract	© IMechE 2020. Powertrain configuration plays an important role in the performance of plug-in hybrid electric buses. Current designs are the compromise between energy efficiency, dynamic ability, shifting smoothness and manufactural cost. To balance the above requirements, this research proposes a novel dual motor powertrain for plug-in hybrid electric buses. The efficiency improvement is compared to the conventional plug-in parallel hybrid electric buses with a single motor powertrain. Parameter designs of system components guarantee two configurations equivalently. To maximize the benefits of the proposed powertrain, this paper introduces an energy management strategy which coordinates enumeration method and dynamic programming to build the optimal maps of powertrain operation. The enumeration method determines the working points of power sources and gear states in all possible modes according to vehicle speed and power. The dynamic programming then selects the most suitable mode with the consideration of gear shifting and mode change in the optimal maps. Simulation results show that the dual motors work in peak efficiency region much more frequently than the single motor in different conditions. Therefore, the total energy cost of dual motor powertrain for entire driving cycles decreases significantly in comparison with the single motor powertrain, 6.5% in the LA92 and 6.7% in the Urban Dynamometer Driving Schedule.
dc.language	English
dc.publisher	SAGE PUBLICATIONS LTD
dc.relation	http://purl.org/au-research/grants/arc/DP150102751
dc.relation.ispartof	Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
dc.relation.isbasedon	10.1177/0954407019896888
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0902 Automotive Engineering, 0913 Mechanical Engineering
dc.title	Efficiency improvement of a novel dual motor powertrain for plug-in hybrid electric buses
dc.type	Journal Article
utslib.citation.volume	234
utslib.for	0902 Automotive Engineering
utslib.for	0913 Mechanical Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
dc.date.updated	2020-12-23T08:01:39Z
pubs.issue	7
pubs.publication-status	Published
pubs.volume	234
utslib.citation.issue	7

Abstract:

© IMechE 2020. Powertrain configuration plays an important role in the performance of plug-in hybrid electric buses. Current designs are the compromise between energy efficiency, dynamic ability, shifting smoothness and manufactural cost. To balance the above requirements, this research proposes a novel dual motor powertrain for plug-in hybrid electric buses. The efficiency improvement is compared to the conventional plug-in parallel hybrid electric buses with a single motor powertrain. Parameter designs of system components guarantee two configurations equivalently. To maximize the benefits of the proposed powertrain, this paper introduces an energy management strategy which coordinates enumeration method and dynamic programming to build the optimal maps of powertrain operation. The enumeration method determines the working points of power sources and gear states in all possible modes according to vehicle speed and power. The dynamic programming then selects the most suitable mode with the consideration of gear shifting and mode change in the optimal maps. Simulation results show that the dual motors work in peak efficiency region much more frequently than the single motor in different conditions. Therefore, the total energy cost of dual motor powertrain for entire driving cycles decreases significantly in comparison with the single motor powertrain, 6.5% in the LA92 and 6.7% in the Urban Dynamometer Driving Schedule.

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http://hdl.handle.net/10453/144943