Investigation of solutions for universal input 208 v-480 v three-phase ac/dc power factor corrected converters with 400 v dc output
department or school: Applied Science, Faculty of
department or school: Engineering, School of (Okanagan)
data provider: DSpace
degree campus: UBCO
creator: Hafezinasab, Hamidreza
issued: 2020-07-20T16:35:58Z
issued: 2020
related degree: Doctor of Philosophy - PhD
degree grantor: University of British Columbia
description: A high-performance, three-phase power factor corrected (PFC) front-end converter with universal input (i.e. 208 V-480 V AC) and 400 V DC output voltage is desirable for applications including Electric Vehicle (EV) battery chargers and data centers. Products that operate with a universal input reduce development and manufacturing costs, in lieu of multiple products for different values of AC input voltages. Three-phase AC inputs reduce the cost of electric circuit cabling and a 400 V DC output is favorable as it reduces the stress on the back-end isolated DC/DC converter stage between the PFC converter and DC output. This dissertation focuses on the best practices and solutions for a universal three-phase AC input PFC converter with 400 V DC output. A detailed review of existing solutions is presented with their advantages and drawbacks noted. The conventional solution of three phase boost follows buck was prototyped and used as a benchmark against the proposed solutions. An adaptive intermediate bus voltage control method is proposed to maximize the efficiency in a three-phase six-switch boost-follows-buck converter. A prototype was developed and experimentally tested to confirm the expected efficiency improvement. In addition, a novel truly universal input (i.e. single-phase or three-phase) PFC with 400 V DC output is also proposed and implemented which can serve the dual purpose of single-phase and three-phase operation. It is shown by analysis and experiments that this solution is not only highly efficient for both single-phase and three-phase operation, but also the components sized for single-phase mode of operation are not oversized for three-phase. Finally, a novel universal input single-stage SEPIC based third harmonic injection three-phase AC/DC PFC is proposed. Control simplicity and single-stage operation are among the main features for this topology.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/75217
note: INVESTIGATION OF SOLUTIONS FOR UNIVERSAL INPUT 208 V-480 V THREE-PHASE AC/DC POWER FACTOR CORRECTED CONVERTERS WITH 400 V DC OUTPUT by Hamidreza Hafezinasab M.A.Sc., IRAN University of Science and Technology, 1999 B.Sc., IRAN University of Science and Technology, 1995 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY in THE COLLEGE OF GRADUATE STUDIES (Electrical Engineering) THE UNIVERSITY OF BRITISH COLUMBIA (Okanagan) July 2020 © Hamidreza Hafezinasab, 2020 ii The following individuals certify that they have read, and recommend to the College of Graduate Studies for acceptance, a thesis/dissertation entitled: Investigation of Solutions for Universal Input 208 V-480 V Three-Phase AC/DC Power Factor Corrected Converters with 400 V DC Output Submitted by Hamidreza Hafezinasab in partial fulfillment of the requirements of the degree of Doctor of Philosophy in Electrical Engineering Dr. Wilson Eberle School of Engineering-UBC Okanagan Supervisor Dr. Thomas Johnson School of Engineering-UBC Okanagan Supervisory Committee Member Dr. Liwei Wang School of Engineering-UBC Okanagan Supervisory Committee Member Dr. Rudolf Seethaler School of Engineering- UBC Okanagan University Examiner Dr. S. Ali Khajehoddin University of Alberta Power electronics Lab External Examiner iii Abstract A high-performance, three-phase power factor corrected (PFC) front-end converter with universal input (i.e. 208 V-480 V AC) and 400 V DC output voltage is desirable for applications including Electric Vehicle (EV) battery chargers and data centers. Products that operate with a universal input reduce development and manufacturing costs, in lieu of multiple products for different values of AC input voltages. Three-phase AC inputs reduce the cost of electric circuit cabling and a 400 V DC output is favorable as it reduces the stress on the back-end isolated DC/DC converter stage between the PFC converter and DC output. This dissertation focuses on t…
has type: Thesis/Dissertation
date issued: 2020-09
is shown at: 10.14288/1.0392472
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/2429/75217