Blar i NTNU Open på forfatter "Midtgård, Ole-Morten"
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Energy Storage for Control of Distributed Photovoltaic Power Systems
Ranaweera, K. M. Iromi Udumbara (Doctoral theses at NTNU;2019:15, Doctoral thesis, 2019)The residential energy storage market is growing at a rapid pace in many countries. Increasing the consumption of locally produced energy and the use of energy storage as a backup source have been the main reasons for ... -
Evaluation of Switching Characteristics, Switching Losses and Snubber Design for a Full SiC Half-Bridge Power Module
Torsæter, Bendik Nybakk (Master thesis, 2016)In this thesis, the performance of the full Silicon Carbide (SiC) half-bridge power module BSM120D12P2C005 from Rohm Semiconductor is investigated. A laboratory circuit enabling double-pulse tests of the half-bridge module ... -
Experimental performance comparison of six-pack SiC MOSFET and Si IGBT modules paralleled in a half-bridge configuration for high temperature applications
Tiwari, Subhadra; Midtgård, Ole-Morten; Undeland, Tore Marvin; Lund, Richard (Chapter, 2016)—In this paper, the switching performance of asix-pack SiC MOSFET module (CCS050M12CM2) is inves-tigated experimentally using a standard double pulse testmethod. The upper three and the lower three MOSFETsof the ... -
Experimental performance evaluation of two commercially available, 1.2 kV half-bridge SiC MOSFET modules
Tiwari, Subhadra; Midtgård, Ole-Morten; Undeland, Tore Marvin (Chapter; Peer reviewed, 2016)In this paper, the switching performances of two state-of-the-art half-bridge SiC MOSFET modules are evaluated using a standard double pulse test methodology. The selected modules are commercially available, and have the ... -
Hard and soft switching losses of a SiC MOSFET module under realistic topology and loading conditions
Tiwari, Subhadra; Langelid, John Kåre; Midtgård, Ole-Morten; Undeland, Tore Marvin (Chapter, 2017)This paper investigates the switching performance of a 1.2 kV half-bridge SiC MOSFET module from Sanrex. Unlike in a standard SiC MOSFET module, where the MOSFET and the anti-parallel diode chips are fabricated separately, ... -
Harmonic analysis of collection grid in offshore wind installations
Shan, Chan (Master thesis, 2018)This thesis work has presented a comprehensive harmonic analysis in megawatt offshore wind farms where the permanent magnet synchronous generator (PMSG) is used. Firstly, a detail configuration of the wind energy conversion ... -
Kontrollstrategier for lading og utlading av et batteri i samsvar med last og produksjon hos en plusskunde
Hegbom, Siri (Master thesis, 2017)Denne masteroppgaven har analysert funksjonaliteten til utviklede use cases ved å utføre forsøk i laboratoriet. Use casene har blitt utviklet for en batteripakke plassert i en husstand med PV produksjon tilknyttet strømnettet ... -
Machine Learning for PV System Operational Fault Analysis: Literature Review
Zenebe, Tarikua Mekashaw; Midtgård, Ole-Morten; Völler, Steve; Cali, Umit (Chapter, 2022)This review paper aims to discover the research gap and assess the feasibility of a holistic approach for photovoltaic (PV) system operational fault analysis using machine learning (ML) methods. The analysis includes the ... -
Merits of SiC MOSFETs for high-frequency soft-switched converters,measurement verifications by both electrial and calorimetric methods
Tiwari, Subhadra; Langelid, John K.; Undeland, Tore Marvin; Midtgård, Ole-Morten (Journal article; Peer reviewed, 2019)This paper quantifies the soft switching loss of a 1.2 kV SiC MOSFET module via a calorimetric method in a 78 kW full-bridge resonant inverter switched at approximately 200 kHz. By switching the SiC MOSFET just before the ... -
Modelling and quantification of power losses due to dynamic on-state resistance of GaN E-mode HEMT
Spro, Ole Christian; Peftitsis, Dimosthenis; Midtgård, Ole-Morten; Undeland, Tore Marvin (Chapter, 2017)This paper investigates a method for quantifying the additional losses in high-voltage GaN enhancement mode HEMTs (eHEMT) employed in converter applications. The additional losses stem from the phenomenon known as current ... -
Modelling of Photovoltaic Modules with Battery Energy Storage in Simulink/Matlab With In-SituMeasurement Comparisons
Vika, Håvard; Midtgård, Ole-Morten; Ranaweera, Iromi; Yordanov, Georgi Hristov (Chapter, 2014) -
Modelling of Photovoltaic Modules with Battery Energy Storage in Simulink/Matlab: With in-situ measurement comparisons
Vika, Håvard Breisnes (Master thesis, 2014)The use of renewable energy sources is increasing and will play an important role in the future power systems. The unpredictable and fluctuating nature of solar power leads to a need for energy storage as the prevalence ... -
Net electricity load profiles of Zero Emission buildings: A Cost Optimization Investment Model for Investigating Zero Balances, Operational Strategies and Grid Restrictions
Ånestad, Astrid (Master thesis, 2014)On the way to meet the internationally sanctioned climate targets, zero emission buildings / zero energy buildings (ZEB) will be an important step. Research is ongoing on what a reasonable definition of ZEB will contain. ... -
Optimal Frequency of Silicon Carbide Power Correction Circuits for On-Board Chargers
Johnsen, Magnus Aune (Master thesis, 2016)Compact high-efficiency power converters is a hot topic in electrical power engineering. So is also the case for electric and plug-in hybrid electric vehicle battery chargers. Increasing the switching frequency in the power ... -
Optimization of operational cost for a grid-supporting PV system with battery storage
Ranaweera, Iromi; Midtgård, Ole-Morten (Journal article, 2016)Coupling an energy storage to a photovoltaic (PV) system not only increases the self-consumption but also solves the over-voltage issues if the cycling of the storage is properly controlled. Whatever the application the ... -
Optimized Design of Multi-MHz Frequency Isolated Auxiliary Power Supply for Gate Drivers in Medium-Voltage Converters
Spro, Ole Christian; Lefranc, Pierre; Par, Sanghyeon; Rivas-Davila, Juan; Peftitsis, Dimosthenis; Midtgård, Ole-Morten; Undeland, Tore Marvin (Peer reviewed; Journal article, 2020)This article presents the design and optimization of a suitable topology for an isolated dc–dc auxiliary power supply with high isolation voltage and low coupling capacitance. The converter consists of a GaN HEMT inverter ... -
Parasitic capacitances and inductances hindering utilization of the fast switching potential of SiC power modules. Simulation model verified by experiment
Tiwari, Subhadra; Midtgård, Ole-Morten; Undeland, Tore Marvin; Lund, Richard (Chapter, 2017)This paper investigates the switching performances of two state-of-the-art half-bridge SiC MOSFET modules using a standard double pulse test methodology. A deliberate choice of the modules with the same voltage and current ... -
Power Converters as smart instruments and actuators in a smarter grid
Dimd, Berhane (Master thesis, 2015)Climate change is one of the biggest challenges facing the world. One of the biggest issues to address is energy. At the moment we get most of our energy from fossil fuels, like oil, coal and gas, but these release greenhouse ... -
PV systemer i distribusjonsnettet
Granum, Christian Møgster (Master thesis, 2014)I denne masteroppgaven er distribuert produksjon fra fotovoltaiske systemer studert ved modellering og simulering av produksjon i en radial i distribusjonsnettet til Hafslund Nett. Med den store økningen av distribuert ... -
Quantification of the Impact of Azimuth and Tilt Angle on the Performance of a PV Output Power Forecasting Model for BIPVs
Dimd, Berhane Darsene; Völler, Steve; Midtgård, Ole-Morten; Cali, Umit; Sevault, Alexis Gerard Edouard (Journal article; Peer reviewed, 2023)Building integrated photovoltaics (BIPVs) have become increasingly popular in urban areas due to their potential to provide zero-emission energy in buildings. BIPVs enable the use of MO of photovoltaic (PV) modules, resulting ...