Shifting strategy and energy management of a two-motor drive powertrain for extended-range electric buses

Nguyen, CT; Walker, PD; Zhang, N

Shifting strategy and energy management of a two-motor drive powertrain for extended-range electric buses

Nguyen, CT Walker, PD Zhang, N

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Publisher:: PERGAMON-ELSEVIER SCIENCE LTD
Publication Type:: Journal Article
Citation:: Mechanism and Machine Theory, 2020, 153
Issue Date:: 2020-11-01

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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.date.accessioned	2021-03-15T04:40:06Z
dc.date.available	2021-03-15T04:40:06Z
dc.date.issued	2020-11-01
dc.identifier.citation	Mechanism and Machine Theory, 2020, 153
dc.identifier.issn	0094-114X
dc.identifier.issn	1873-3999
dc.identifier.uri	http://hdl.handle.net/10453/147160
dc.description.abstract	© 2020 This paper studies the shifting strategy and energy management of a two-motor drive powertrain for extended-range electric buses. To do this, a multibody dynamic model is first established for transient investigation. A novel shift schedule is second proposed by integrating a priority factor for the engaging gear into the equivalent motor efficiency. According to vehicle speed and power, the shift schedule results in two possible cases: single-gear and double-gear change. Optimal shifting strategies are third recommended to eliminate the torque interruption under those possible gear changes. To optimize the torque allocation to two motors and minimize fuel consumption, a model predictive control-based energy management strategy is then developed. Finally, this paper simulates shift quality and energy economy in comparison with a conventional one-motor drive powertrain. The results show that torque interruptions generate large jerks in the one-motor configuration. Conversely, the two-motor configuration achieves great shift quality by eliminating the torque interruptions mostly during single-gear upshift or entirely under double-gear downshift. The two-motor drive powertrain also improves energy economy significantly by 9.1% compared to the conventional configuration.
dc.language	English
dc.publisher	PERGAMON-ELSEVIER SCIENCE LTD
dc.relation	http://purl.org/au-research/grants/arc/DP150102751
dc.relation	http://purl.org/au-research/grants/arc/DE170100134
dc.relation.ispartof	Mechanism and Machine Theory
dc.relation.isbasedon	10.1016/j.mechmachtheory.2020.103966
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0906 Electrical and Electronic Engineering, 0910 Manufacturing Engineering, 0913 Mechanical Engineering
dc.subject.classification	Design Practice & Management
dc.title	Shifting strategy and energy management of a two-motor drive powertrain for extended-range electric buses
dc.type	Journal Article
utslib.citation.volume	153
utslib.for	0906 Electrical and Electronic Engineering
utslib.for	0910 Manufacturing Engineering
utslib.for	0913 Mechanical Engineering
pubs.organisational-group	/University of Technology Sydney
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
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2021-03-15T04:40:02Z
pubs.publication-status	Published
pubs.volume	153

Abstract:

© 2020 This paper studies the shifting strategy and energy management of a two-motor drive powertrain for extended-range electric buses. To do this, a multibody dynamic model is first established for transient investigation. A novel shift schedule is second proposed by integrating a priority factor for the engaging gear into the equivalent motor efficiency. According to vehicle speed and power, the shift schedule results in two possible cases: single-gear and double-gear change. Optimal shifting strategies are third recommended to eliminate the torque interruption under those possible gear changes. To optimize the torque allocation to two motors and minimize fuel consumption, a model predictive control-based energy management strategy is then developed. Finally, this paper simulates shift quality and energy economy in comparison with a conventional one-motor drive powertrain. The results show that torque interruptions generate large jerks in the one-motor configuration. Conversely, the two-motor configuration achieves great shift quality by eliminating the torque interruptions mostly during single-gear upshift or entirely under double-gear downshift. The two-motor drive powertrain also improves energy economy significantly by 9.1% compared to the conventional configuration.

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http://hdl.handle.net/10453/147160