Date of Graduation
8-2024
Document Type
Dissertation
Degree Name
Doctor of Philosophy in Engineering (PhD)
Degree Level
Graduate
Department
Electrical Engineering
Advisor/Mentor
Balda, Juan C.
Committee Member
Zhao, Yue
Second Committee Member
Farnell, Chris
Third Committee Member
Wejinya, Uche
Keywords
Electrical engineering; Power electronic converter; Magnetics design
Abstract
The pursuit of high-power density and high switching frequency is a central theme in the advancement of power electronic converters. While these parameters offer significant benefits in terms of compactness and performance, they also introduce challenges related to efficiency and thermal management. This doctoral dissertation aims to provides a design framework to analyze the implications of high-frequency operation (> 100 kHz) on magnetics design and performance in power electronic converters, particularly when integrating silicon carbide (SiC) power modules. It examines the advantages and disadvantages of high-frequency operation and delves into its effects on the performance of the converter, focusing on the scalability of converters operating at high frequencies. The design framework aims to reduce computational workload by using customizable or commercially available magnetic cores adaptable across diverse frequency, power, and voltage ranges. It incorporates off-the-shelf SiC power modules to identify an optimal point of operating frequency aligned with magnetic design considerations while accounting for current derating associated with varying switching frequencies. Through experimental analysis, the study assesses the effects of high-frequency operation and explores trade-offs when utilizing SiC power modules by comparing different magnetic designs over a wide range of switching frequencies. The investigation underscores the importance of optimizing these designs to achieve higher efficiency and high-power densities without compromising performance.
Citation
Porras Fernandez, D. A. (2024). Impacts of High-Frequency Operation on Magnetics and Performance on Isolated Power Electronic Converter Design. Graduate Theses and Dissertations Retrieved from https://scholarworks.uark.edu/etd/5393