Title:
Development of simulation tools, control strategies, and a hybrid vehicle prototype

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dc.contributor.advisor Leamy, Michael J.
dc.contributor.author Pei, Dekun en_US
dc.contributor.committeeMember Ferri, Aldo A.
dc.contributor.committeeMember Sadegh, Nader
dc.contributor.department Mechanical Engineering en_US
dc.date.accessioned 2013-01-17T21:59:30Z
dc.date.available 2013-01-17T21:59:30Z
dc.date.issued 2012-11-14 en_US
dc.description.abstract This thesis (1) reports the development of simulation tools and control strategies for optimizing hybrid electric vehicle (HEV) energy management, and (2) reports the design and testing of a hydraulic hybrid school bus (HHB) prototype. A hybrid vehicle is one that combines two or more energy sources for use in vehicle propulsion. Hybrid electric vehicles have become popular in the consumer market due to their greatly improved fuel economy over conventional vehicles. The control strategy of an HEV has a paramount effect on its fuel economy performance. In this thesis, backward-looking and forward-looking simulations of three HEV architectures (parallel, power-split and 2-mode power-split) are developed. The Equivalent Cost Minimization Strategy (ECMS), which weights electrical power as an equivalent fuel usage, is then studied in great detail and improvements are suggested. Specifically, the robustness of an ECMS controller is improved by linking the equivalence factor to dynamic programming and then further tailoring its functional form. High-fidelity vehicle simulations over multiple drive-cycles are performed to measure the improved performance of the new ECMS controller, and to show its potential for online application. While HEVs are prominent in the consumer market and studied extensively in current literature, hydraulic hybrid vehicles (HHVs) only exist as heavy utility vehicle prototypes. The second half of this thesis reports design, construction, and testing of a hydraulic hybrid school bus prototype. Design considerations, simulation results, and preliminary testing results are reported, which indicate the strong potential for hydraulic hybrids to improve fuel economy in the school bus vehicle segment. en_US
dc.description.degree MS en_US
dc.identifier.uri http://hdl.handle.net/1853/45904
dc.publisher Georgia Institute of Technology en_US
dc.subject Hydraulic hybrid vehicle en_US
dc.subject Hybrid en_US
dc.subject Prius en_US
dc.subject Dynamic programming en_US
dc.subject Hybrid electric vehicle en_US
dc.subject Optimal control en_US
dc.subject ECMS en_US
dc.subject DP en_US
dc.subject Equivalent cost minimization strategy en_US
dc.subject.lcsh Energy consumption
dc.subject.lcsh Hybrid electric cars
dc.subject.lcsh Electric automobiles
dc.subject.lcsh Electric automobiles Research
dc.title Development of simulation tools, control strategies, and a hybrid vehicle prototype en_US
dc.type Text
dc.type.genre Thesis
dspace.entity.type Publication
local.contributor.advisor Leamy, Michael J.
local.contributor.corporatename George W. Woodruff School of Mechanical Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication 57dc2bf2-f2ca-46a1-814b-1aaab829df46
relation.isOrgUnitOfPublication c01ff908-c25f-439b-bf10-a074ed886bb7
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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