Now showing items 21-40 of 621

    • Modeling and analysis of power system oscillations using real-time simulator. 

      Sandberg, Andreas (Master thesis; Mastergradsoppgave, 2022-05-16)
      In this thesis a version of the Kundur two-area model has been developed for Simulink and real time simulator software and hardware from OPAL-RT. This model should be used for testing the rotor angle oscillations load variations create. A review of the different control elements found in basic power systems has been reviewed and implemented. The main component that will be manipulated in the model ...
    • Industry 5.0 Enabled Smart Logistics: Optimization of Distribution Network in Food Industry 

      Jafari, Niloofar (Master thesis; Mastergradsoppgave, 2022-05-15)
      The fourth industrial revolution, namely Industry 4.0, has substantially impacted the supply chain and logistics operations which led to the introduction of Logistics 4.0. The incorporation of novel technologies in this context developed smart logistics; however, scholars raised the concerns about socio-economic aspects of these improvements. Industry 5.0 as a value-driven paradigm, in this regard, ...
    • Automated Tugboat Assisted Docking of Large Vessels 

      Abdullah, Muhammad Zaeem (Master thesis; Mastergradsoppgave, 2022-05-15)
      The main research aspect behind this project was the problem in docking the ship to the port with limited space and resources available, causing number of onsite accidents and loss of resources. The main objective is to increase safety on ports, reduce pollution and increase fuel efficiency, also reduce the docking time for the vessels, which can be achieved by developing an autonomous docking system ...
    • Temporary Load Shedding - Optimization of power distribution system using load shedding Techniques 

      Basit, Abdul (Master thesis; Mastergradsoppgave, 2022-05-15)
      In today’s world, electrical energy is a necessity. The dependency on electricity is increasing day by day which caused the system to work under a stress state close to stability limits and disturbances. An efficient power system supplying electrical energy must be reliable, stable, secure, and reasonable to meet consumer needs. The power demand depends on several factors and weather is one of the ...
    • Automatic Generation of Custom Image Recognition Models 

      Hanssen, Magnus Fredheim (Master thesis; Mastergradsoppgave, 2022-05-15)
      In this thesis, we examine the viability of training a convolutional neural network using synthetic data. The cnn is used for image recognition in an rms. We create a program that can render 3D models from STL files as images with varied backgrounds. The process of creating and training an image recognition model is also automated. Lastly, the model is used for image recognition. The report ...
    • Develop an autonomous product-based reconfigurable manufacturing system 

      Olavsbråten, Morten Monland (Master thesis; Mastergradsoppgave, 2022-05-15)
      With the ever-emerging market including mass customization and product variety, reconfigurable manufacturing systems (RMS) have been presented as the solution. A manufacturing system that combines the benefits of the two classic manufacturing systems to increase responsiveness and reduce production time and costs. To cope with the lack of physical systems, an RMS system have been built at UiT Narvik. ...
    • Technical Challenges and Solutions of a three-phase bidirectional two stage Electric Vehicle charger 

      Mughal, Babur Zaman Khan (Master thesis; Mastergradsoppgave, 2022-05-15)
      The sustainability of the power grid owing to the building strain of the ever-growing demand for electrical energy urges innovative and more practical solutions that enable active participation of end-users in stable and reliable management of power systems. One of the emerging projections of such a two-way exchange of electrical power between the grid and consumers is the developing field of ...
    • Coordinated Volt-Var control in multiple smart inverters in Smart Distribution Networks for Voltage Regulation. 

      Abbasi, Arslan Gul (Master thesis; Mastergradsoppgave, 2022-05-15)
      The inevitable growing demand for electrical power, depleting sources of conventional power generation, and world wide concern about global warming are major factors to boost the trend of renewable integration in grids. This rising trend is causing many technical and operational challenges where one of the most prominent problem is the overvoltage caused by distributed generation units, interfaced ...
    • Feasibility Study of Carbon Capture and Storage Process to implement in Maritime Industry 

      Aryal Atreya, Ashish (Master thesis; Mastergradsoppgave, 2022-05-15)
      The CO2 emission is considered as one of the main elements for causing the global climatic change. The maritime industry contributes about 2.5% of the worldwide CO2 gas emission annually. The International Maritime Industry (IMO) has set the target of has set the target of reducing the total annual emission from international shipping to 70% by 2050. So, the carbon capture, utilization, and storage ...
    • Deployment of a Neo-Hookean membrane: experimental and numerical analysis 

      Moatamedi, Mojtaba; Al-Bahkali, Essam; Erchiqui, Fouad; Souli, M (Journal article; Tidsskriftartikkel; Peer reviewed, 2013-03-31)
      The aim of this research is to assess the response of a thin membrane subjected to high-pressure gas loading for inflation. This procedure is applied during the design process of the membrane structure to allow the product to resist high-pressure loading and to further characterize the hyper-elastic material. The simulation in this work considers the standard procedures used in the LS-DYNA software, ...
    • Fluid-structure Interaction for Water Hammers Effects in Petroleum and Nuclear Plants 

      Messahel, Ramzi; Cohen, B; Souli, M; Moatamedi, Mojtaba (Journal article; Tidsskriftartikkel; Peer reviewed, 2011-12-31)
      Fluid-Structure Interaction (FSI) becomes more and more the focus of computational engineering in Petroleum and Nuclear Industry in the last years. These problems are computer time consuming and require new stable and accurate coupling algorithms to be solved. For the last decades, the new development of coupling algorithms, and the increasing of computer performance have allowed to solve some ...
    • Atmospheric Ice Accretion Measurement Techniques 

      Virk, Muhammad Shakeel; Mustafa, Mohamad Y; Hamdan, Qusai-Al (Journal article; Tidsskriftartikkel; Peer reviewed, 2011-09-30)
      Atmospheric icing on structures has proven to be an area of concern in many cold climate geographical regions like arctic and alpine. Difficulties encountered by the communication, construction and power industries in these areas are the subject of intense investigations for researchers from decades. Three main methods of investigation are generally employed by researchers to study atmospheric ice ...
    • Numerical investigation of vibration and dynamic pressure of a vertical axis wind turbine 

      Erchiqui, Fouad; Souli, M; Moatamedi, Mojtaba; Albahkali, E (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-12-31)
      In the environmental field, the problems of vibration reduction have become a major preoccupation, particularly on the noise generated by the acoustic radiation pressure produced by wind turbines. This paper is aimed at presenting the investigation on the application of FEM element method for study the acoustic radiation pressure produced by vertical-axis wind turbine. For this initiative, we ...
    • Control of Spacecraft Formation with Disturbance Rejection and Exponential Gains 

      Schlanbusch, Rune; Kristiansen, Raymond (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      We address the problem of state feedback translational motion control of a spacecraft formation through a modified sliding surface controller using variable gains and I^2 action for disturbance rejection. The exponential varying gains ensure faster convergence of the state trajectories during attitude maneuver while keeping the gains small (and the system less stiff) for station keeping. Integral ...
    • Determining Thermal Properties of Polyurethane by Solving the Heat Equation and IR Imaging 

      Norum, Hans-Kristian; Andleeb, Zahra; Khawaja, Hassan; Moatamedi, Mojtaba (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-27)
      All materials have different and unique thermal properties that determine how the temperature changes when a material is subjected to a temperature difference. This study was intended to investigate the thermal properties of a polymer called Polyurethane, focusing on anti-seepage and anti-abrasion polyurethane. The thermal conductivity and heat transfer coefficient of cold polyurethane specimens ...
    • Exploring auction based energy trade with the support of MAS and blockchain technology 

      Shvetsov, Nikita (Master thesis; Mastergradsoppgave, 2017-06-13)
      This document describes a simulation of the local energy market with support of multi-agent approach and blockchain technology. The investigated points include blockchain technology and its applications, Ethereum platform and smart contracts as a tool for storing data of operations and creating assets, multi-agent approach to model the local energy market. The document explores building a solution ...
    • All electric battery service vessel - Dynamic modeling of a battery fed IPMSM propulsion plant as a tool for energy estimates and functional description for an energy management system 

      Breines, Anders (Master thesis; Mastergradsoppgave, 2017-06-12)
      "Designing an all-electric battery vessel, knowledge of the dynamic performance of the electrical propulsion plant becomes crucial to produce adequate estimates of needed battery capacity. An energy management system is to control the on-board power flow and ensure energy efficient operation of the vessel. This thesis presents a solution for dynamic simulation of an all-electric battery vessel based ...
    • Study of Ice Accretion on Horizontal Axis Wind Turbine Blade Using 2D and 3D Numerical Approach 

      Jin, Jia Yi; Virk, Muhammad Shakeel; Hu, Qin; Jiang, Xingliang (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-07)
      In order to optimize the wind turbine operation in ice prone cold regions, it is important to better understand the ice accretion process and how it affects the wind turbine performance. In this paper, Computational Fluid Dynamics (CFD) based 2D and 3D numerical techniques are used to simulate the airflow/droplet behaviour and resultant ice accretion on a 300 kW wind turbine blade. The aim is to ...
    • Architectures and technologies for increased agility in small-scale manufacturing systems 

      Shu, Beibei (Doctoral thesis; Doktorgradsavhandling, 2022-06-16)
      <p>The rapid booming of industry 4.0 technologies has been boosting further development of industrial manufacturing systems in the recent two decades. An increasing number of disruptive yet enabling technologies are becoming available for industrial applications. However, while the factories becoming more complex, a proliferation of incompatible systems that have been developed by different vendors ...