Viser treff 324-343 av 2415
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Cable Selection Considerations for Subsea Vehicles
(Chapter, 2018)The aim of this paper is to present a methodology for selecting proper voltage level and power cables as a part of the AC distribution system design for subsea vehicles, such as Remotely Operated Vehicles, seafloor trenchers ... -
Capacity subscription grid tariff efficiency and the impact of uncertainty on the subscribed level
(Peer reviewed; Journal article, 2022)While volume-based grid tariffs have been the norm for residential consumers, capacity-based tariffs will become more relevant with the increasing electrification of society. A further development is capacity subscription, ... -
Carbon abatement costs for renewable fuels in hard-to-abate transport sectors
(Peer reviewed; Journal article, 2023)Renewable fuels can help to reduce carbon emissions from transportation. To inform planning decisions, this paper estimates carbon abatement costs of replacing fossil fuels with renewable hydrogen, ammonia, or Fischer–Tropsch ... -
Case Study Analysis of Running Distributed Generators in Island Mode: Effects on Reliability of Supply
(Master thesis, 2012)As a consequence of increased government efforts to reduce local Norwegian CO_2-emissions the development of small distributed generators have increased. This development is assumed to continue, but at an increasing ... -
Case Study of Integrating an Offshore Wind Farm with Offshore Oil and Gas Platforms and with an Onshore Electrical Grid
(Journal article; Peer reviewed, 2013)This research project explored the technical feasibility of utilizing an offshore wind farm as a supplementary power source to several electrical grids of offshore oil and gas platforms and providing surplus power to an ... -
Case study of offshore wind farm integration to offshore oil and gas platforms as an isolated system - System Topologies, Steady State and Dynamic Aspects
(Master thesis, 2011)The objective of this thesis work has been to investigate the electric system stability, reliability and power security of an off-grid isolated network system integration of an offshore wind farm to offshore oil and gas ... -
Case Study: Self-Interest for Microgrids in Providing Peak Shaving and Congestion Management Services
(Master thesis, 2021)Det har de siste årene vært en økning i uregulerbar kraftproduksjon og et endret forbruksmønster hos sluttbruker. Analyser av den langsiktige utviklingen i kraftsystemet tilsier at denne utviklingen vil fortsette. Dette ... -
Case Study: Self-Interest for Microgrids in Providing Peak Shaving and Congestion Management Services
(Master thesis, 2021)Det har de siste årene vært en økning i uregulerbar kraftproduksjon og et endret forbruksmønster hos sluttbruker. Analyser av den langsiktige utviklingen i kraftsystemet tilsier at denne utviklingen vil fortsette. Dette ... -
Causes and Impacts of Partial Shading for a Building-Applied PV System
(Master thesis, 2016)The world as we know it today is full of technical equipment that requires energy of some sort, let it be oil, gas or electricity. With an increasing growth of the earth s population, as well as a boost in the general ... -
Centralised and Distributed Optimization for Aggregated Flexibility Services Provision
(Peer reviewed; Journal article, 2020)The recent deployment of distributed battery units in prosumer premises offer new opportunities for providing aggregated flexibility services to both distribution system operators and balance responsible parties. The ... -
Centralized control of energy storages for voltage support in low-voltage distribution grids
(Chapter, 2016)This paper presents a centralized voltage control scheme for unbalanced low-voltage grids experiencing over voltage problems due to high PV power penetration. Voltage control is primarily achieved by remotely controlling ... -
CFD Analysis of the Flow around the Top Fin of the Flumill Tidal Turbine
(Master thesis, 2013)OpenFOAM is an open-source software suite which is available as a free download. The software is under rapid development, and is gaining a wide user base in both industry and academia. In the current project, OpenFOAM is ... -
Challenges and Rationale for Laboratory Research of Offshore Grids
(Journal article; Peer reviewed, 2012)Offshore power systems will be characterized by a large penetration of power electronics converters and power cables, resulting in complex behaviors that can be quite different from traditional AC systems. Analyzing such ... -
Challenges and Strategies for a Real-Time Implementation of a Rainflow-Counting Algorithm for Fatigue Assessment of Power Modules
(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 in all-dc offshore wind power plants
(Peer reviewed; Journal article, 2021)As the size and distance from shore of new offshore wind power plants (OWPPs) increase, connection to shore using high-voltage (HV) direct-current (DC) technology becomes more cost-effective. Currently, every offshore wind ... -
Challenges in distribution grid with high penetration of renewables
(Research report, 2018)The growing share of variable generation in Europe is increasing the need for flexibility in the electricity system. Flexibility on the demand side could be used by market players to optimise their portfolio as well as by ... -
Challenges in platforming and digitizing decentralized energy services
(Journal article; Peer reviewed, 2022) -
Challenges of SiC MOSFET Power Cycling Methodology
(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 of the future Danish energy scenario with 50 % wind integration and how electric vehicles adaptive charging can help to mitigate.
(Master thesis, 2015)Denmark aims for a 50% wind integration in 2020. In the current scenario, where wind represents around 34% of domestic consumption, mothballing of conventional power plants and heavy dependency in interconnection lines is ... -
Challenges on drive circuit design for series-connected SiC power transistors
(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 ...