Analysis and design of capacitively coupled resonators for wireless power transfer system applications
department or school: Applied Science, Faculty of
department or school: Engineering, School of (Okanagan)
data provider: DSpace
degree campus: UBCO
creator: Wenngren, Suzanne Elizabeth
issued: 2019-02-22T16:36:35Z
issued: 2019
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: An analysis of a capacitive wireless power transfer system is presented to investigate the relationship between spatial impedance variation between the transmitter and receiver. The capacitively coupled link is modeled by an equivalent circuit that includes all coupling paths between the four conductors which make up the link. The final model is formed using an observational tuning approach, beginning with a simple model and iteratively adding complexities introduced by non-idealities until good agreement is shown between experimental and simulated results. Seven resonator configurations are designed to resonate at the ISM band frequencies of 13.56 MHz, 27.12 MHz, and 40.68 MHz, and at critical coupling distances of 10 cm, 20 cm and 30 cm to investigate the impact of each parameter on efficiency and spatial variation. The analysis shows that the behavior of the link over a spatial variation is generally independent of frequency and critical coupling distance, and only the peak efficiency at critical coupling is notably impacted. Measurement results from all seven configurations are shown to verify the analysis. The results indicate that for applications with high power transfer efficiency demands, a lower frequency and smaller critical coupling distances are preferred.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/68403
note: ANALYSIS AND DESIGN OF CAPACITIVELY COUPLEDRESONATORS FOR WIRELESS POWER TRANSFER SYSTEMAPPLICATIONSbySuzanne Elizabeth WenngrenB.ASc., The University of British Columbia (Okanagan), 2014A thesis submitted in partial fulfillment of the requirements forthe degree ofMaster of Applied ScienceinThe College of Graduate StudiesElectrical EngineeringThe University of British Columbia(Okanagan)February 2019c© Suzanne Elizabeth Wenngren, 2019 The following individuals certify that they have read, and recommend to the College of Graduate Studies for acceptance, a thesis/dissertation entitled: Analysis and design of capacitively coupled resonators for wireless power transfer system applications. submitted by Suzanne Elizabeth Wenngren in partial fulfillment of the requirements of the degree of Master of Applied Science. Dr. Thomas Johnson - School of Engineering Supervisor Dr. Stephen OâLeary - School of Engineering Supervisory Committee Member Dr. Liwei Wang - School of Engineering Supervisory Committee Member Dr. Yang Cao - School of Engineering University Examiner Additional Committee Members include: Dr. Wilson Eberle - School of Engineering Supervisory Committee Member iiAbstractAn analysis of a capacitive wireless power transfer system is presented to investigate therelationship between spatial impedance variation between the transmitter and receiver. Thecapacitively coupled link is modeled by an equivalent circuit that includes all coupling pathsbetween the four conductors which make up the link. The final model is formed using anobservational tuning approach, beginning with a simple model and iteratively adding com-plexities introduced by non-idealities until good agreement is shown between experimentaland simulated results. Seven resonator configurations are designed to resonate at the ISMband frequencies of 13.56 MHz, 27.12 MHz, and 40.68 MHz, and at critical coupling distancesof 10 cm, 20 cm and 30 cm to investigate the impact of each parameter on efficiency andspa…
has type: Thesis/Dissertation
date issued: 2019-05
is shown at: 10.14288/1.0376519
language: eng
degree discipline: Electrical 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
type: Text
identifier URI: http://hdl.handle.net/2429/68403