Browsing NTNU Open by Author "Giannakis, Andreas"
Now showing items 1-15 of 15
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Analytical design considerations for MVDC solid-state circuit breakers
Berg, Sondre Johan Kjellin; Giannakis, Andreas (Chapter, 2019)This paper investigates the design principles of a solid-state circuit breaker (SS CB) for medium voltage direct current (MVDC) grids. The emphasis is given on the design of the required active and passive components that ... -
Application of Novel AC–AC Matrix VFD for Power Factor Improvement in Conventional AC–DC–AC VFD‐Loaded Power Distribution Lines
Petrauskas, Gytis; Svinkunas, Gytis; Jonaitis, Audrius; Giannakis, Andreas (Journal article; Peer reviewed, 2022) -
Conduction Performance Evaluation of Silicon and SiC Power Semiconductors for Solid-State DC Breakers
Giannakis, Andreas; Peftitsis, Dimosthenis (Peer reviewed; Journal article, 2022)The main obstacle for the further development and commercialization of solid-state DC circuit breakers is the high ON-state power losses caused by the active power semiconductor devices. This paper presents an experimental ... -
Design Considerations and Modeling of a VSC Assisted Resonant Current DC Circuit Breaker for MVDC Applications
Bergerskogen, Mathilde (Master thesis, 2020)Mellomspente likestrømsnett (MVDC-nett) har mange fordeler sammenlignet med mellomspente vekselstrømsnett (MVAC-nett), og betraktes som velegnet til et bredt spekter av bruksområder. Håndteringen av kortslutningsfeil er ... -
Design Considerations of Power Semiconductor Devices Employed in VSCs Under Short-Circuit Fault Conditions in MVDC Distribution Grids
Giannakis, Andreas; Peftitsis, Dimosthenis (Chapter, 2018)Electric energy distribution using medium voltage DC (MVDC) enables an advantageous performance compared to the state-of-the-art MVAC counterparts. Among others, a crucial challenge currently is related to the need for ... -
Design of High-Performance Solid-State Circuit Breakers for LVDC and MVDC Applications
Giannakis, Andreas (Doctoral theses at NTNU;2022:59, Doctoral thesis, 2022)Today, the emerging technology of LVDC and MVDC grids is under extensive research. These grids ease the integration of distributed electricity generation systems and offer several advantages over the AC counterparts, such ... -
Electro-thermal Design of a Solid-State MVDC Circuit Breaker
Giannakis, Andreas; Peftitsis, Dimosthenis (Chapter, 2019)This paper investigates the impact of several design parameters on the electro-thermal performance of a solid-state circuit breaker (CB) for medium voltage DC (MVDC) grids. The parameters studied are the cooling system ... -
A Grid-Tied Inverter with Renewable Energy Source Integration in an Off-Grid System with a Functional Experimental Prototype
Zelba, Mantas; Deveikis, Tomas; Barakauskas, Justinas; Baronas, Artūras; Gudžius, Saulius; Jonaitis, Audrius; Giannakis, Andreas (Peer reviewed; Journal article, 2022)Renewable energy implementation in residential-scale grid-connected systems is already popular, and the growth of such systems is increasing every year. Grid-connected solar systems are relatively simple to install and ... -
Introduction of Silicon Carbide in High-Power Converters Using a Hybrid Si-SiC Switch
Lars-Kristian Njåstad (Master thesis, 2020)Denne masteroppgaven har undersøkt bruken av halvleder komponenter med høy båndbredde (WBG) i høyeffektsomformere. Sammenlignet med tradisjonelle halvledere, som for eksempel silisium (Si), så har WBG halvledere som for ... -
MVDC Distribution Grids and Potential Applications: Future Trends and Protection Challenges
Giannakis, Andreas; Peftitsis, Dimosthenis (Chapter, 2018)This paper presents the fundamental system components of medium-voltage direct current (MVDC) grids, including an overview of power electronic converters and protection schemes against DC fault currents. In addition to ... -
Overvoltage Suppression Scheme for Minimized Snubber Requirements in MVDC Solid-State Breakers With Series-Connected IGBTs
Giannakis, Andreas; Peftitsis, Dimosthenis (Journal article; Peer reviewed, 2022) -
Performance Evaluation and Limitations of Overvoltage Suppression Circuits for Low- and Medium-Voltage DC Solid-State Breakers
Giannakis, Andreas; Peftitsis, Dimosthenis (Peer reviewed; Journal article, 2021)This paper presents a design and performance evaluation of three different overvoltage suppression circuits employed in a solid-state circuit breaker for medium- to high-power and low- to medium-voltage DC grids. The ... -
Performance evaluation of high power semiconductor devices employed in solid-state circuit breakers for MVDC grids
Giannakis, Andreas; Peftitsis, Dimosthenis (Chapter, 2019)This paper presents a performance evaluation of power losses of three high-power and high-voltage power semiconductor devices, namely, IGBTs, BIGTs, and IGCTs operating in solid-state DC circuit breakers for medium voltage ... -
Termisk design av halvleder-kretsbryter for MVDC-nett
Mikkel Heiene (Master thesis, 2019)Denne masteroppgaven er del av en mastergrad i Elektrisk Energiteknikk og Smarte Nett ved Norges Teknisk-Naturvitenskapelige Universitet. Design og optimalisering av en MVDC-bryter er et kritisk stadium i implementeringen ... -
A universal automatic and self-powered gate driver power supply for normally-ON SiC JFETs
Giannakis, Andreas; Peftitsis, Dimosthenis (Journal article; Peer reviewed, 2021)Normally-ON silicon carbide junction-field-effect transistors have a simple design and exhibit advantageous performance in terms of losses, elevated junction temperatures and high switching frequencies. However, under a ...