High Frequency Transformers for Solid-State Transformer Applications

This paper focuses on the study of the high frequency transformer incorporated in solid- state transformers, specifically on the development of the steps that enable the design of an optimized high frequency transformer and its equivalent model based on the desired characteristics. The impact of ope...

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Main Authors: Nuno Santos, Miguel Chaves, Paulo Gamboa, Armando Cordeiro, Nelson Santos, Sónia Ferreira Pinto
Format: Article
Language:English
Published: MDPI AG 2023-06-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/13/12/7262
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author Nuno Santos
Miguel Chaves
Paulo Gamboa
Armando Cordeiro
Nelson Santos
Sónia Ferreira Pinto
author_facet Nuno Santos
Miguel Chaves
Paulo Gamboa
Armando Cordeiro
Nelson Santos
Sónia Ferreira Pinto
author_sort Nuno Santos
collection DOAJ
description This paper focuses on the study of the high frequency transformer incorporated in solid- state transformers, specifically on the development of the steps that enable the design of an optimized high frequency transformer and its equivalent model based on the desired characteristics. The impact of operating a transformer at high frequency and the respective solutions that allow this impact to be reduced are analyzed, alongside the numerous advantages that the utilization of these transformers has over traditional 50/60 Hz transformers. Furthermore, the power scheme of the solid-state transformer is outlined, focusing on the power converters, which are immediately before and after the high frequency transformer (HFT). We also investigate a control technique that allows for correct operation and the existence of power bidirectionality. In a novel approach, this paper demonstrates the systematic steps for designing an HFT according to the desired specifications of each given project, helping students and engineers achieve their objectives in power-electronic applications. Moreover, this paper aims at increasing the knowledge of this area of power electronics and facilitating the development of new topologies with high power density, which are very important to the integration of renewable power sources and other applications. Finally, a simulation is presented to validate a high frequency transformer and its control technique.
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spelling doaj.art-9a06e1704db64de4bf3ea25d899c61b32023-11-18T09:11:24ZengMDPI AGApplied Sciences2076-34172023-06-011312726210.3390/app13127262High Frequency Transformers for Solid-State Transformer ApplicationsNuno Santos0Miguel Chaves1Paulo Gamboa2Armando Cordeiro3Nelson Santos4Sónia Ferreira Pinto5Electrical Engineering Energy and Automation Department (DEEEA), Instituto Superior de Engenharia de Lisboa (ISEL), Instituto Politécnico de Lisboa (IPL), Estrada de Benfica 529, 1549-020 Lisboa, PortugalElectrical Engineering Energy and Automation Department (DEEEA), Instituto Superior de Engenharia de Lisboa (ISEL), Instituto Politécnico de Lisboa (IPL), Estrada de Benfica 529, 1549-020 Lisboa, PortugalElectrical Engineering Energy and Automation Department (DEEEA), Instituto Superior de Engenharia de Lisboa (ISEL), Instituto Politécnico de Lisboa (IPL), Estrada de Benfica 529, 1549-020 Lisboa, PortugalElectrical Engineering Energy and Automation Department (DEEEA), Instituto Superior de Engenharia de Lisboa (ISEL), Instituto Politécnico de Lisboa (IPL), Estrada de Benfica 529, 1549-020 Lisboa, PortugalElectrical Engineering Energy and Automation Department (DEEEA), Instituto Superior de Engenharia de Lisboa (ISEL), Instituto Politécnico de Lisboa (IPL), Estrada de Benfica 529, 1549-020 Lisboa, PortugalInstituto de Engenharia de Sistemas e Computadores: Investigação e Desenvolvimento em Lisboa (INESC-ID Lisbon), 1000-029 Lisboa, PortugalThis paper focuses on the study of the high frequency transformer incorporated in solid- state transformers, specifically on the development of the steps that enable the design of an optimized high frequency transformer and its equivalent model based on the desired characteristics. The impact of operating a transformer at high frequency and the respective solutions that allow this impact to be reduced are analyzed, alongside the numerous advantages that the utilization of these transformers has over traditional 50/60 Hz transformers. Furthermore, the power scheme of the solid-state transformer is outlined, focusing on the power converters, which are immediately before and after the high frequency transformer (HFT). We also investigate a control technique that allows for correct operation and the existence of power bidirectionality. In a novel approach, this paper demonstrates the systematic steps for designing an HFT according to the desired specifications of each given project, helping students and engineers achieve their objectives in power-electronic applications. Moreover, this paper aims at increasing the knowledge of this area of power electronics and facilitating the development of new topologies with high power density, which are very important to the integration of renewable power sources and other applications. Finally, a simulation is presented to validate a high frequency transformer and its control technique.https://www.mdpi.com/2076-3417/13/12/7262solid-state transformerhigh frequency transformermagnetic materialwindingsLitz wireparasitic capacitances
spellingShingle Nuno Santos
Miguel Chaves
Paulo Gamboa
Armando Cordeiro
Nelson Santos
Sónia Ferreira Pinto
High Frequency Transformers for Solid-State Transformer Applications
Applied Sciences
solid-state transformer
high frequency transformer
magnetic material
windings
Litz wire
parasitic capacitances
title High Frequency Transformers for Solid-State Transformer Applications
title_full High Frequency Transformers for Solid-State Transformer Applications
title_fullStr High Frequency Transformers for Solid-State Transformer Applications
title_full_unstemmed High Frequency Transformers for Solid-State Transformer Applications
title_short High Frequency Transformers for Solid-State Transformer Applications
title_sort high frequency transformers for solid state transformer applications
topic solid-state transformer
high frequency transformer
magnetic material
windings
Litz wire
parasitic capacitances
url https://www.mdpi.com/2076-3417/13/12/7262
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AT miguelchaves highfrequencytransformersforsolidstatetransformerapplications
AT paulogamboa highfrequencytransformersforsolidstatetransformerapplications
AT armandocordeiro highfrequencytransformersforsolidstatetransformerapplications
AT nelsonsantos highfrequencytransformersforsolidstatetransformerapplications
AT soniaferreirapinto highfrequencytransformersforsolidstatetransformerapplications