Three-phase DC-DC resonant converters for high-power battery charging applications
department or school: Applied Science, Faculty of
department or school: Electrical and Computer Engineering, Department of
data provider: DSpace
degree campus: UBCV
creator: Arshadi, Sayed Abbas
issued: 2022-11-21T21:38:17Z
issued: 2022
related degree: Doctor of Philosophy - PhD
degree grantor: University of British Columbia
description: Resonant power converters have gained popularity in many application, especially where there are strict requirements on efficiency, power density, and Electromagnetic Compability (EMC). Among different types of resonant converters, LLC and CLLC resonant converters have attracted more attention for uni-directional and bi-directional applications, respectively. This is due to the unique features of these types of converters, such as soft switching. Half-bridge and full-bridge resonant structures have are suitable for low to medium power levels, and three-phase structures are considered for higher power levels. Three-phase resonant converters provide high efficiency, low current ripple, good thermal distribution, and small filter and heat sink size (high power density), that makes them an attractive option for high power battery charger applications. Although there has been substantial research and development on single-phase LLC and CLLC resonant converters for low to medium power levels, the literature investigating three-phase structures has been very limited. Issues to be investigated for three phase resonant converters are: 1) passive components tolerances, which leads to unbalanced behavior of the converter, 2) development of a balancing technique to mitigate the unbalanced behavior of the converter, 3) the natural limited gain range of resonant converter structure, 4) poor light load efficiency of the three-phase resonant converter and possible phase shedding strategies to improve it, and also to increase the reliability of the system. In this work, methods to use three-phase LLC and CLLC resonant converters more efficiently are investigated. This includes: 1) investigation of imbalances in three-phase LLC converters and proposing a novel strategy referred to as Trigonometric Current Balancing (TCB) technique to mitigate the unbalanced behavior of the converter under sever unbalanced situation, 2) investigating phase-shedding techniques and strategies to improve…
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/83166
note: Three-Phase DC-DC Resonant Converters for High-Power Battery ChargingApplicationsbySayed Abbas ArshadiM. Eng., Isfahan University of Technology, 2012B. Eng., Malik-Ashtar University of Technology, 2009A THESIS SUBMITTED IN PARTIAL FULFILLMENTOF THE REQUIREMENTS FOR THE DEGREE OFDoctor of PhilosophyinTHE FACULTY OF GRADUATE AND POSTDOCTORAL STUDIES(Electrical & Computer Engineering)The University of British Columbia(Vancouver)November 2022© Sayed Abbas Arshadi, 2022The following individuals certify that they have read, and recommend to the Faculty of Graduate and Post-doctoral Studies for acceptance, the dissertation entitled:Three-Phase DC-DC Resonant Converters for High-Power Battery Charging Applicationssubmitted by Sayed Abbas Arshadi in partial fulfillment of the requirements forthe degree of Doctor of Philosophyin Electrical and Computer EngineeringExamining Committee:Dr. Martin Ordonez, Professor, Electrical and Computer Engineering, UBCSupervisorDr. Wilson Eberle, Associate Professor, Electrical and Computer Engineering, UBC OkanaganSupervisory Committee MemberDr. Deepak Gautam, Sr. Power Electronics Engineer, Delta-Q TechnologiesSupervisory Committee MemberDr. Alireza Nojeh, Professor, Electrical and Computer Engineering, UBCUniversity ExaminerDr. Mauricio Ponga de la Torre, Assistant Professor, Mechanical Engineering, UBCUniversity ExaminerAdditional Supervisory Committee Members:Dr. Juri Jatskevich, Professor, Electrical and Computer Engineering, UBCSupervisory Committee MemberiiAbstractResonant power converters have gained popularity in many application, especially where there are strict re-quirements on efficiency, power density, and Electromagnetic Compability (EMC). Among different typesof resonant converters, LLC and CLLC resonant converters have attracted more attention for uni-directionaland bi-directional applications, respectively. This is due to the unique features of these types of converters,such as soft switching. Half-bridge and full-bridge r…
has type: Thesis/Dissertation
date issued: 2022-11
is shown at: 10.14288/1.0422007
language: eng
degree discipline: Electrical and Computer Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
contributor: Ordonez, Martin
type: Text
identifier URI: http://hdl.handle.net/2429/83166