Blar i Institutt for elkraftteknikk på forfatter "Peftitsis, Dimosthenis"
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An Adaptive Current-Source Gate Driver for High-Voltage SiC MOSFETs
Rødal, Gard Lyng; Peftitsis, Dimosthenis (Peer reviewed; Journal article, 2022)This paper presents a novel current-source gate driver for Silicon Carbide (SiC) metal oxide semiconductor field-effect transistors (MOSFETs) with adaptive functionalities. The proposed driver aims to decouple and improve ... -
Advanced gate drivers for next generation high power converters
Hove, Håvard Lefdal (Master thesis, 2019)Denne masteroppgaven tar for seg avanserte driverkretser for halvleder komponenter med høy båndbredde (WBG) slik som de nye silisiumkarbid (SiC) MOSFETene. Sammenlignet med tradisjonelle halvleder materialer som silisium ... -
Battery energy storage integration via DC/AC converter in grid connected wind turbines
Rekdal, Kristin (Master thesis, 2018)The growing need of battery energy storage to support the increase in renewable production in the electricity mix has brought the attention to the modular multilevel converter (MMC) for medium voltage applications. Modular ... -
Battery energy storage system connected to a three-phase 50 Hz-grid
Reite, Ida Pria (Master thesis, 2017)Battery energy storage systems (BESS) employing secondary battery technology may offer the greatest potential for large-scale integration of renewable energy sources (RES), and is considered a key element for enabling smart ... -
Bidirectional DC-DC Converter for an Electric Vehicle On-Board Charger
Thorsen, Mathias Winther (Master thesis, 2019)Det økende antallet elbiler i verden er en viktig del av dekarbonisering av transportsektoren, men å lade dem kan øke belastningen på det elektriske kraftnettet. Målet med denne avhandlingen er å finne ut om V2G-teknologi ... -
Capacitance Variations and Gate Voltage Hysteresis Effects on the Turn-On Switching Transients Modelling of High-Voltage SiC MOSFETs
Rødal, Gard Lyng; Vivekanandham Pushpalatha, Yoganandam; Philipps, Daniel Alexander; Peftitsis, Dimosthenis (Peer reviewed; Journal article, 2023) -
Challenges and Strategies for a Real-Time Implementation of a Rainflow-Counting Algorithm for Fatigue Assessment of Power Modules
Antonopoulos, Antonios; D'Arco, Salvatore; Hernes, Magnar; Peftitsis, Dimosthenis (Chapter, 2019)The aim of this work is to obtain a reliable estimation of the remaining lifetime of power-electronic modules. Lifetime models provide information on the fatigue durability of power modules under repetitive loading ... -
Challenges of SiC MOSFET Power Cycling Methodology
Göthner, Fredrik T. B. W.; Spro, Ole Christian; Hernes, Magnar; Peftitsis, Dimosthenis (Chapter, 2018)This paper investigates the power cycling methodology for reliability testing of SiC metal-oxide-semiconductor field-effect transistors (MOSFETs). Dedicated test benches were designed and built to study this issue. The ... -
Challenges on drive circuit design for series-connected SiC power transistors
Peftitsis, Dimosthenis; Rabkowski, Jacek; Nee, Hans-Peter; Undeland, Tore Marvin (Journal article; Peer reviewed, 2017)The breakdown voltages of the currently available 1.2 and 1.7-kV classes Silicon Carbide (SiC) transistors are not sufficient to operate under medium blocking voltages. On the other hand, the fabrication yields of the ... -
A Condition Monitoring Method for Solder Layer Degradation of Liquid-Cooled Power Semiconductors
Baumann, Timm Felix; Papastergiou, Konstantinos; Murillo Garcia, Raul; Peftitsis, Dimosthenis (Chapter, 2023)This paper presents a new method for condition monitoring of solder layer degradation of liquid-cooled power semiconductors. Solder layer degradation is detected by an increased thermal impedance, which has the effect that ... -
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 ... -
Considerations on Combining Unfolding Inverters with Partial Power Regulators in Battery–Grid Interface Converters
Galkin, Ilya; Saltanovs, Rodions; Bubovich, Alexander; Blinov, Andrei; Peftitsis, Dimosthenis (Peer reviewed; Journal article, 2024)The application of electrochemical cells as a source unit of electrical energy is rapidly growing—used in electric vehicles and other electric mobility devices, as well as in energy supply systems—as energy storage, often ... -
Design and optimisation of an auxiliary power supply with medium-voltage isolation using GaN HEMTs
Spro, Ole Christian Baumann (Doctoral theses at NTNU;2020:350, Doctoral thesis, 2020)This PhD thesis shows that compact and efficient converter systems can be obtained by leveraging the inherent characteristics of GaN HEMT devices. In the targeted application of an auxiliary power supply with medium-voltage ... -
Design Challenges of a SiC-based MVDC Power Supply for Deep-Sea Applications
Rødal, Gard Lyng; Peftitsis, Dimosthenis (Chapter, 2019)Design challenges of medium-voltage DC/DC converter for deep-sea applications using silicon carbide (SiC) power MOSFET modules are reviewed. Challenges of high-pressure conditions at deep-sea operation are presented and ... -
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 for Series-Connected SiC MOSFETs Operating at 100 kV/µs
Ubostad, Tobias Nieckula; Peftitsis, Dimosthenis (Chapter, 2023)Series connection of Silicon Carbide (SiC) metal-oxide semiconductor field-effect transistors (MOSFETs) is an interesting solution to design switches for voltages that are not yet commercially available or limited for ... -
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 ... -
Die-Level Series-Connection of SiC MOSFETs and Integration of Decoupling Capacitors
Ubostad, Tobias Nieckula; Peftitsis, Dimosthenis (Chapter, 2024)Series connection of Silicon Carbide (SiC) Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) is a viable solution to design switches for voltages that are not yet commercially available or limited for single-die ... -
Discharge-based condition monitoring for electrolytic DC-link capacitors
Baumann, Timm Felix; Garcia, Raul Murillo; Papastergiou, Konstantinos; Peftitsis, Dimosthenis (Journal article; Peer reviewed, 2024)Electrolytic capacitors are among the most vulnerable components in power electronic converters, risking their efficient and electrically stable operation. This is due to the decreasing capacitance under long-term stress. ... -
Dual Active Bridge Converter
Krasniqi, Dalina (Master thesis, 2021)De mange bruksområdene til den isolerte toveis DC-DC-omformeren har fanget oppmerksomheten til industrien, og den mest lovende topologien av disse er Dual Active Bridge(DAB) omformeren. Denne omformertopologien krever ...