Architectures and control for energy storage systems with wired and wireless power transfer

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dc.contributorHaskew, Tim
dc.contributorRicks, Kenneth
dc.contributorHu, Fei
dc.contributorWilliams, Keith
dc.contributor.advisorAbu Qahouq, Jaber
dc.contributor.authorCao, Yuan
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2020-01-16T15:03:33Z
dc.date.available2020-01-16T15:03:33Z
dc.date.issued2019
dc.descriptionElectronic Thesis or Dissertationen_US
dc.description.abstractIn the past two decades, the performance of battery energy storage systems (BESS) has been significantly improved with the utilization of advanced architectures and control methods and new electronic devices. However, the increasing demands imposed by BESS applications still necessitate the need for additional performance improvement and/or create new issues that need to be addressed. These can be summarized as follows: (1) The imbalance in the state-of-charge (SOC) between cells might occur, which might degrade the performance of the battery system. (2) In a BESS, with the increasingly advanced functions and control methods, the number of required components is increased. (3) In electrical vehicles (EVs) applications, the limited driving range and the needed charging time of the lithium-ion (Li-Ion) battery pack is one of the major reasons slowing down the adoption of EVs. (4) The transmission efficiency of wireless power transfer (WPT) systems is decreased as the distance and misalignment between transmitter (Tx) and receiver (Rx) increase. (5) In order to realize the wireless power transfer in BESS, additional components such as DC-AC inverter Tx coil, Rx coil and AC-DC rectifier are required, which increase the cost and size of the system. This dissertation work focuses on investigating the challenges mentioned above to further improve the overall performance of battery system, reduce the number of components and converters, increase the system efficiency and realize a robust and cost-effective battery energy storage system. Chapter 2 and Chapter 3 focus on the challengers related to SOC balancing and large number of components in battery systems. In Chapter 4, one unique aspect of the WEDES system is used in order to add flexibility and improve safety. Chapter 5 and Chapter 6 address the challenge related to decreased transmission efficiency in wireless power transfer when charging a battery. In Chapter 7, in order to deal with the challenge that additional components are required to realize wireless power transfer, a single dual-type-output power converter is discussed and analyzed. Chapter 8 provides a summary and conclusion for the work presented in this dissertation and discusses some potential future work.en_US
dc.format.extent206 p.
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.otheru0015_0000001_0003390
dc.identifier.otherCao_alatus_0004D_13905
dc.identifier.urihttp://ir.ua.edu/handle/123456789/6447
dc.languageEnglish
dc.language.isoen_US
dc.publisherUniversity of Alabama Libraries
dc.relation.hasversionborn digital
dc.relation.ispartofThe University of Alabama Electronic Theses and Dissertations
dc.relation.ispartofThe University of Alabama Libraries Digital Collections
dc.rightsAll rights reserved by the author unless otherwise indicated.en_US
dc.subjectElectrical engineering
dc.titleArchitectures and control for energy storage systems with wired and wireless power transferen_US
dc.typethesis
dc.typetext
etdms.degree.departmentUniversity of Alabama. Department of Electrical and Computer Engineering
etdms.degree.disciplineElectrical and Computer Engineering
etdms.degree.grantorThe University of Alabama
etdms.degree.leveldoctoral
etdms.degree.namePh.D.

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