Doctoral Dissertations
Keywords and Phrases
coupled inductor; DC-DC converter; High step-up converter; renewable energy; switched-capacitor
Abstract
"This dissertation is focused on developing and analyzing new high voltage gain DC-DC power electronic converters. The proposed converters in this dissertation are suitable candidates for connecting low voltage sources such as photovoltaic (PV) panels or fuel cell (FC) stacks to a DC microgrid or DC link of an inverter. The proposed converters provide desired characteristics such as high voltage gain at a low or medium duty cycle values, low voltage stress on power semiconductors, and continuous input current. Initially, the research introduces three novel converter topologies: First, two quadratic converters based on the combination of a three-winding coupled inductor (CI) and voltage multiplier cells (VMC) are proposed. Due to the quadratic voltage gain function, these converters can provide a very high voltage gain at a low duty cycle. Second, a dual-switch converter based on the integration of a switched-capacitor (SC) cell with a three-winding CI is proposed. Because of the SC cell used in this topology, a very low voltage stress appears on the power switches of this converter. Third, an impedance-source-based converter using an active clamp is proposed. Unlike the conventional CI-based converters, in which higher voltage gain is achieved by using a higher turns ratio for the windings of the CI, this impedance-source-based converter can achieve substantial voltage gain with lower turns ratios. Finally, a general method for analyzing single-switch step-up DC-DC converters with an output inductor and different SC cells is presented. The steady-state analysis, design guidelines, and detailed comparisons between the proposed converter and existing converters are covered in this research. Additionally, to validate the theoretical analysis, 200W – 300 W benchtop experimental prototypes are developed for each converter"-- Abstract, p. iv
Advisor(s)
Ferdowsi, Mehdi
Committee Member(s)
Emdadi, Arezoo
Kimball, Jonathan W.
Shamsi, Pourya
Bo, Rui
Department(s)
Electrical and Computer Engineering
Degree Name
Ph. D. in Electrical Engineering
Publisher
Missouri University of Science and Technology
Publication Date
Spring 2025
Pagination
xv, 148 pages
Note about bibliography
Includes_bibliographical_references_(pages 146-147)
Rights
©2024 Saeed Habibi , All Rights Reserved
Document Type
Dissertation - Open Access
File Type
text
Language
English
Thesis Number
T 12482
Recommended Citation
Habibi, Saeed, "New Topologies for High Voltage Gain DC-DC Power Electronic Converters – Theoretical Analysis and Experimental Validation" (2025). Doctoral Dissertations. 3382.
https://scholarsmine.mst.edu/doctoral_dissertations/3382
