Masters Theses

Keywords and Phrases

Bi-directional; DC-AC-AC Converter; High Frequency Conversion; Power Electronics; Power Flow Control; Triple Active Bridge

Abstract

Driven by widespread electrification and escalating energy demands, efficient and cost-effective converter systems are necessary to maintain and improve our nation's electrical grid. Facilitating this necessity are power electronic converters in applications such as smart grids, renewable energy integration, and electric vehicles. Guided by the demand for improved converter topologies and conversion efficiency, much research has been conducted on varying designs, development, and control implementations. One such topology gaining significant research attention is the triple active bridge (TAB) converter. The TAB is a three-port power converter enabling both bidirectional power flow on each port and galvanic isolation for safety and noise isolation purposes. Its modularity and adaptability allow for implementation in a variety of high-frequency conversion applications while its high efficiency minimizes power losses and further reduces its physical size. The main focus of this work is the implementation of a DC-AC-AC triple active bridge converter. Initially, the defining system equations for instantaneous current and average power are developed. These equations are then validated for efficacy through a PLECS simulation model and utilizing a physical hardware prototype of the DC-DC-DC TAB. Secondly, a feed-forward control algorithm is presented for the TAB using the Newton-Raphson power control method as a framework for development. This power sharing implementation is then validated in both PLECS and physical hardware for the DC-DC-DC TAB. Lastly, the aforementioned control strategy is then extended for applications within the DC-AC-AC TAB, while also being substantiated through hardware analysis. Overall, the main contribution of this thesis focuses on the development required for the advancement of power electronic technology by expanding its application scope and providing novel methods for operation.

Advisor(s)

Kimball, Jonathan W.

Committee Member(s)

Shamsi, Pourya
Ferdowsi, Mehdi

Department(s)

Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Summer 2024

Pagination

xi, 96 pages

Note about bibliography

Includes_bibliographical_references_(pages 91-95)

Rights

©2024 Jonathan Henri Saelens , All Rights Reserved

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 12446

Electronic OCLC #

1477967614

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