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Description
Title: | Analysis and design of high power density resonant switched-capacitor converters |
Author(s): | Macy, Benjamin Blake |
Department / Program: | Electrical & Computer Eng |
Discipline: | Electrical & Computer Engr |
Degree Granting Institution: | University of Illinois at Urbana-Champaign |
Degree: | M.S. |
Genre: | Thesis |
Subject(s): | Swtiched
Capacitor Power Electronics Power Density High Efficiency Dickson Capacitor Resonant Split-Phase Soft-charging Soft-switching Gallium Nitride (GaN) |
Abstract: | This thesis is motivated by the desire for power electronics designers to create power electronic converters that have high energy density (are very small) and high efficiency (few losses). Switched-capacitor (SC) topologies that utilize the high energy density of capacitors are a candidate for fulfilling these two criteria. However, there are inherent limitations in conventional switched capacitor converters where a designer is required to make a trade-off between efficiency and capacitor energy density utilization. One way to overcome this obstacle is to utilize resonance in a SC converter. This work proposes a resonant, voltage step-up Dickson SC converter. A single inductor is utilized to achieve zero current switching of all transistors, which allows for high switching frequency and high conversion efficiency. A split-phase control scheme is used in order to eliminate the current transients associated with the Dickson SC converter and the resultant power loss. Employing these techniques, a Dickson SC converter prototype is implemented with GaN transistors. The converter is able to achieve high power density while maintaining high efficiency because of the control techniques that are employed. |
Issue Date: | 2015-04-27 |
Type: | Text |
URI: | http://hdl.handle.net/2142/78454 |
Rights Information: | Copyright 2015 Benjamin B. Macy |
Date Available in IDEALS: | 2015-07-22 |
Date Deposited: | May 2015 |
This item appears in the following Collection(s)
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Dissertations and Theses - Electrical and Computer Engineering
Dissertations and Theses in Electrical and Computer Engineering -
Graduate Dissertations and Theses at Illinois
Graduate Theses and Dissertations at Illinois