Date of Graduation
12-2015
Document Type
Thesis
Degree Name
Master of Science in Electrical Engineering (MSEE)
Degree Level
Graduate
Department
Electrical Engineering
Advisor/Mentor
Balda, Juan C.
Committee Member
Ang, Simon S.
Second Committee Member
McCann, Roy A.
Keywords
Applied sciences; Dc-dc converter; High frequency transformer; Solid-state transformer; Transformer design
Abstract
The objective of this thesis is to present a high- or medium-frequency transformer design methodology for Solid-State Transformer (SST) applications. SSTs have been proposed as a replacement of the traditional 50/60 Hz transformer in applications demanding high-power density. Moreover, due to the high penetration of distributed generation, DC grids, energy storage systems, and sensitive loads, SSTs have been considered as an enabling technology for envisioned future energy systems. These applications demand additional functionalities that may not be achieved with traditional transformers. For example, active power flow control, harmonic suppression, voltage regulation, voltage sag compensation, and reduced size and volume.
In this thesis, SST topologies are evaluated in order to determine their impact upon the transformer design. In addition, design considerations for core and wire selections, isolation requirements, and different transformer structures are investigated. As a result, the proposed transformer design methodology accounts for leakage inductance requirements for optimal power transfer, high-frequency effects in the transformer core and windings, and a flux density optimization to maximize transformer’s efficiency. The design procedure has been implemented in MATLAB® as an interactive tool for designing high-frequency transformers.
Citation
Garcia Montoya, R. J. (2015). High-Frequency Transformer Design for Solid-State Transformers in Electric Power Distribution Systems. Graduate Theses and Dissertations Retrieved from https://scholarworks.uark.edu/etd/1382
