Browsing Fakultet for informasjonsteknologi og elektroteknikk (IE) by Journals "Energy Procedia"
Now showing items 21-39 of 39
-
Investigation of the impact of wakes and stratification on the performance of an onshore wind farm
(Journal article; Peer reviewed, 2015)This work investigates the effects of wakes and stratification on the performance of turbines operating in the Bessaker wind farm. The wind farm is located in a highly complex terrain. Most dominant wind directions recorded ... -
Investigation on Fault-ride through Methods for VSC-HVDC Connected Offshore Wind Farms
(Journal article; Peer reviewed, 2016)This paper proposes a novel fault-ride through method for offshore wind farms connected to grid through a voltage source converter (VSC)-based high voltage direct current (HVDC) transmission. The proposed method introduces ... -
Isogeometric methods for CFD and FSI-simulation of flow around turbine blades
(Journal article; Peer reviewed, 2015)Coupled fluid-structure interaction simulations of wind turbines have traditionally been considered computationally too expensive to carry out. However, more powerful computers and better solution techniques based on ... -
Joint Modelling of Wind Power and Hydro Inflow for Power System Scheduling
(Peer reviewed; Journal article, 2016)This paper concerns the joint modelling of wind power and hydro inflow for long-term power system scheduling. We propose a vector autoregressive model applied to deseasonalized series to describe the joint generating ... -
Laboratory Verification of the Modular Converter for a 100 kV DC Transformerless Offshore Wind Turbine Solution
(Journal article; Peer reviewed, 2013)In this paper, an experimental verification of the control of a modular series connected voltage source converter suitable for an HVDC transformerless offshore wind turbine is presented. The test bench is built around a ... -
Large Scale Tertiary CO2 EOR in Mature Water Flooded Norwegian Oil Fields
(Journal article; Peer reviewed, 2017)A technical-economical model for a large-scale infrastructure combining CO2 EOR and aquifer storage has been used to construct a scenario including 23 Norwegian Continental Shelf oil fields that have been identified as ... -
Large Superconducting Wind Turbine Generators
(Journal article; Peer reviewed, 2012)To realize large (>10 MW) direct-driven off-shore wind turbines, a number of steps are needed to reduce weight and cost compared to on-shore technologies. One of the major challenges is to provide drive trains which can ... -
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 ... -
Multiphysics 3D Modelling of Ironless Permanent Magnet Generators
(Journal article; Peer reviewed, 2014)Abstract Analytical method is widely used for the preliminary design and optimization of electrical machines. It has short calculation time and low computational cost (cost of simulation codes and supporting hardware), but ... -
Multistage grid investments incorporating uncertainty in offshore wind development
(Journal article; Peer reviewed, 2017)Representation of uncertainty in transmission expansion planning (TEP) models has become increasingly important as many power systems are exposed to significant technological changes induced by top-down climate and energy ... -
Optimal LQG Controller for Variable Speed Wind Turbine Based on Genetic Algorithms
(Journal article; Peer reviewed, 2012)Linear Quadratic Gaussian (LQG) control methodology shows useful properties of good performance and robust-ness in controller design applied to wind turbine. Typically, in the design procedure LQG method is necessary to ... -
Passive Filter Design and Offshore Wind Turbine Modelling for System Level Harmonic Studies
(Peer reviewed; Journal article, 2015)This paper is aimed at creating a framework for harmonic studies of an offshore wind power plant by means of system level time domain simulations. Many modern wind turbine generators employ full-scale power electronic ... -
Profitability of a Hydro Power Producer Bidding in Multiple Power Markets
(Peer reviewed; Journal article, 2016)The production scheduling of a hydro power producer exposed to the day-ahead, balancing and capacity market is examined to find what profit the producer may achieve by strategically bid in the above mentioned markets. ... -
Quasi-Static & Dynamic Numerical Modeling of Full Scale NREL 5MW Wind Turbine
(Journal article; Peer reviewed, 2017)Simulations of the National Renewable Energy Laboratory (NREL) 5MW wind turbine under quasi-static Multiple Reference Frame (MRF) and dynamic Sliding Mesh Interface (SMI) methodologies are presented. Two reference zone ... -
Smooth Transition Between Controllers for Floating Wind Turbines
(Journal article; Peer reviewed, 2012)This paper presents a novel wind turbine control system which gives a smooth power output during transitions between different controllers. The paper presents an implementation of a control system designed for an offshore ... -
Smoothing of Offshore Wind Power Variations with Norwegian Pumped Hydro: Case Study
(Peer reviewed; Journal article, 2016)The solar and wind energy production in the European countries has been growing in the last years and the need of energy storage too. One of the most competitive technologies already available for large-scale balancing is ... -
Spline based Mesh Generator for high fidelity simulation of flow around turbine blades
(Journal article; Peer reviewed, 2015)Mesh generation involving complex geometries, such as wind turbine blades, is highly complicated. The problem is generally addressed using tetrahedral meshes, or hybrid meshes with hexahedral elements close to the body and ... -
The Assessment of Overvoltage Protection Within Energization of Offshore Wind Farms
(Journal article; Peer reviewed, 2012)The beneficiary of Offshore Wind Farms (OWF) to land wind farms in the sense of more power productivity and land view disturbance leads to more investment and consideration. Nevertheless, the maintenance of OWFs is a ... -
The capabilities and effectiveness of remote inspection of wind turbines
(Journal article; Peer reviewed, 2015)This paper evaluates the effectiveness of remote inspections of wind turbines. The first part of the paper presents a usability test where remote inspections with a robot prototype have been directly compared to manned ...