Blar i Institutt for elkraftteknikk på tittel
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Marine Current Turbines and Generator preference. A technology review
(Journal article; Peer reviewed, 2013)Marine current power is a significant energy resource yet to be exploited for electricity production. Several novel turbine technologies can be found on the market, and new ones emerge every year. This study found that the ... -
Marine renewable energy conversion: Grid and off-grid modeling, design and operation
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:214, Doctoral thesis, 2014)The global energy production from renewable sources is increasing, with high penetration of both wind and solar in key regions. Ocean Wave Energy is projected to contribute with an increasing share of the future power ... -
Market Power in Hydro-Thermal Systems with Marginal Cost Bidding
(Chapter, 2018)Traditionally, electricity markets have been designed with the intention of disabling producer side market power or prohibiting exercising it. Nonetheless it can be assumed that players participating in pool markets and ... -
Masteroppgave i vassdragsteknikk: Sammenlikning av små elvekraftverk og kraftverk med magasin
(Master thesis, 2012)Det siste tiåret har småkraftutbygginger økt kraftig. Små kraftverk har generelt blitt oppfattet som mindre kontroversielt enn større magasinkraftverk, men lite er gjort for å sammenligne disse to kraftverkstypene når det ... -
Material Flow Analysis and Life Cycle Costing for Water and Sludge Processing for Case Study of a Small Wastewater Treatment Plant in Poland
(Master thesis, 2014)The primary objective of this thesis has been to contribute to the understanding of the total process of water and sludge handling of small wastewater treatment plants (WWTPs) within the framework of sustainable performance ... -
Maximizing self-consumption rates and power quality towards two-stage evaluation for solar energy and shared energy storage empowered microgrids
(Peer reviewed; Journal article, 2022)Substantial penetration levels of intermittent and fluctuated renewable energy resources like PV can cause overcapacity and other operational challenges in the grid. Therefore, energy market actors are directed to the ... -
Maximum step out of AC cables to offshore installations
(Master thesis, 2018)The task of supplying an offshore installation with power is one that can be solved in several different ways. This thesis suggests a compensated AC subsea cable as the power from shore solution. At a length of 200km, the ... -
Maximum Torque Density Limit for Surface-Cooled SPM Machines
(Chapter, 2020)The aim of this work is to find the maximum torque density limit of a surface cooled SPM machine. In this paper, an analytical and a FEM-based model are developed under some theoretical conditions. Both models consist of ... -
Measured load profiles and heat use for “low energy buildings” with heat supply from district heating
(Journal article; Peer reviewed, 2017)In the development towards nearly zero energy buildings (nZEB) the load profiles for the heat demand and the heat use of the buildings are expected to be changed considerably compared to the situation today. This change ... -
Measurement and Calculation of Surface Tension of Oil, Gas and Glycol
(Master thesis, 2014)The importance of surface tension in separation design was evaluated in this report. Surface tension was found to have importance when calculating essentialdesign parameters, like droplet size, which is is fundamental in ... -
Measurements of Harmonic Distortion in Maritime Power Systems
(Master thesis, 2015)Harmonic voltage distortion is a problem becoming more and more common in maritime power systems because of the increasing use of power electronics; especially in relation to VFDs. To avoid the possibility of damage and ... -
Mechanisms Governing Longitudinal AC Breakdown at Solid-Solid Interfaces
(Chapter, 2021)Insulation systems incorporating multilayer dielectrics are commonly used in many high-voltage applications where the interfaces between the dielectric layers are the most vulnerable regions. The primary purpose of this ... -
Medium Frequency High Power Transformers for All-DC Wind Parks
(Doctoral theses at NTNU;2017:104, Doctoral thesis, 2017)There is an increasing interest during recent decades for high power converters due to their capabilities in addressing different challenges in various applications such as renewable energies and smart grids and also at ... -
MEDIUM VOLTAGE LOAD BREAK SWITCH WITH AIR AS INTERRUPTING MEDIUM
(Master thesis, 2014)Compact load break switches (LBSs) are common inside compact substations, and other places in the medium voltage distribution system where space is a limiting factor. SF6 is usually applied as interruption and insulation ... -
Medium voltage load current interruption in presence of ablating polymer material
(Journal article; Peer reviewed, 2018)The expected abolishment of SF6-gas in medium voltage switchgear has prompted a search for replacements for the switch types that depend on SF6 to obtain the required capability, reliability, compactness and cost. Ablation ... -
Medium-term Hydropower Scheduling with Provision of Capacity Reserves and Inertia
(Master thesis, 2016)The European power system has seen an increased penetration of renewable energy sources in the recent years, especially wind and solar power, causing a greater demand for balancing services. Renewable power generation ... -
Medium-Term hydropower scheduling with variable head under inflow, energyand reserve capacity price uncertainty
(Journal article; Peer reviewed, 2019)We propose a model for medium-term hydropower scheduling (MTHS) with variable head and uncertainty in inflow, reserve capacity, and energy price. With an increase of intermittent energy sources in the generation mix, it ... -
Medium-Term Hydropower Scheduling: In a Multi-Market Setting
(Doctoral theses at NTNU;2019:130, Doctoral thesis, 2019)Regulated hydropower is a flexible resource that is well suited for the provision of ancillary services. Given the opportunity to participate in different markets, the difficult task is to find the optimal allocation between ... -
Merits of SiC MOSFETs for high-frequency soft-switched converters,measurement verifications by both electrial and calorimetric methods
(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 ... -
Meta-parametrised meta-modelling approach for optimal design of power electronics conversion systems: Application to offshore wind energy
(Doctoral thesis at NTNU;2015:108, Doctoral thesis, 2015)In an offshore environment, the efficiency (η), the power density (ρ) and the powerto- mass ratio (γ) are of paramount importance in the design of wind energy conversion systems (WECS). Indeed, the optimisation of these ...