Recent additions

  • Real-time application of grid-forming converters in smart distribution network 

    Leirvang, Jon-Kristian (Master thesis; Mastergradsoppgave, 2023-05-21)
    As the world faces the urgent need to reduce greenhouse gas emissions and combat climate change, renewable sources of energy have emerged as a viable solution. However, integrating renewable energy into existing power grids poses unique challenges. The availability of solar power depends on sunlight, wind power on wind speed, and this variability can cause instability and fluctuations in the grid, ...
  • Robust visual inertial odometry for agile flight sensor fusion 

    Ferkic, Edvin (Master thesis; Mastergradsoppgave, 2024-07-05)
    This thesis presents the development and validation of a robust Visual-Inertial Odometry (VIO) system tailored for agile unmanned aerial vehicles (UAVs) operating in GPS-denied environments. These environments often challenge traditional navigation systems due to their inherent limitations in urban canyons, indoors, or densely forested areas. The study introduces a novel visual odometry (VO) algorithm ...
  • Electric Load Forecasting of Residential Building 

    Lodhi, Mubashir Nasir (Master thesis; Mastergradsoppgave, 2024-05-15)
    As global energy consumption continues to rise relevant energy sectors and communities must accurately forecast future electricity needs. This foresight is critical for effective planning, preserving the stability of the electricity grid, and avoiding blackouts. Accurate forecasting methodologies are critical in guiding decision-making processes correlated to resource allocation, infrastructure ...
  • Virtual inertia to the AC Microgrid to improving the ROCOF and frequency Nadir in a Hybrid AC/DC Microgrid. 

    Shrestha Newar, Dan Bahadur (Master thesis; Mastergradsoppgave, 2024-05-15)
    To move the global energy away from fossil fuels towards renewable energy leads toward a more complex grid, after experiencing a reduction of inertia when integrating large renewable energy sources (RES). With an increased pace of RES penetration into the grid and along a growing demand of electrical power, the challenge to maintain the system frequency as close as possible to the nominal range ...
  • Solar Angle Optimizer 

    Åkerman, Alexander (Master thesis; Mastergradsoppgave, 2024-05-15)
    This thesis deals with the subject of a two axis rotatable solar panel rig where the design for the electrical components are proposed and the controller code from previous theses are further developed. The rig is to be used for research by UiT Narvik and the prerequisites for the installation of the rig are designed in this thesis. The electrical components for the rig proposed are an H-bridge, ...
  • Electric snowmobile. 

    Rønneseth, Johnny (Master thesis; Mastergradsoppgave, 2024-05-15)
    The main purpose of the project is to convert the snowmobile to electric and make it operational, which rule out focus on factors as ex. driving range, user interface for performance adjustment, heating for comfort, etc. For mounting the electric motor a suitable and feasible location and motor bracket to easy access the existing gearbox axel, and also in position to a cooling airflow through the ...
  • Impact on Distribution Network Hosting Capacity using Machine Learning Based Reactive Power Support from PV Smart Inverters 

    Safavi, Sepehr (Master thesis; Mastergradsoppgave, 2024-05-15)
    Nowadays, due to growth of advanced technology and its impact on people lives, there is an increasing need for aligning and optimizing infrastructure with people needs. Harnessing renewable energy from different sources, store and eventually transmit and distributed it is an all-time challenge which nowadays by implementing and proper maintenance we lead to having higher efficiency to the point where ...
  • Wide Area Control and Improvement of Dynamical State of Power System 

    Nazari, Afshin (Master thesis; Mastergradsoppgave, 2024-05-15)
    Some approaches to achieving full observability and controllability in power systems are explored in this thesis. The core structure of this work consists of observability and controllability, focusing on two key phases of optimization and control. In the first phase, system observability is addressed through optimal placement of Phasor Measurement Units (PMUs). The Connectivity Matrix Algorithm ...
  • Trajectory Tracking with Collision Avoidance for Large Vessel Draft Surveys 

    Saleheen, A B M (Master thesis; Mastergradsoppgave, 2024-05-15)
    This thesis explores the innovative use of unmanned aerial vehicles to conduct draft surveys of large maritime vessels. This process is critical for determining vessel load through water displacement measurements. At the port of Narvik, a crew typically performs this task manually, where LKAB’s iron ore cargo vessels are surveyed while docked. The usual method requires going around the ship in ...
  • DC-DC Converter For Fuel Cell (Control Strategy, Voltage Curve, Optimization, Converter Type). Current-fed Full-bridge Isolated DC-DC Converter With An Active Clamp Circuit For Fuel Cell Application 

    Shojaee, Sanaz (Master thesis; Mastergradsoppgave, 2022-05-15)
    This thesis investigates one of the most favorable converters for integrating fuel cells into a DC microgrid. A current-fed full-bridge isolated DC-DC converter has advantages such as high voltage conversion ratio, low switches’ losses, and low input current ripple which make it one of the best choices for Fuel cells (FC). This converter transfer power to the load through the leakage inductance which ...
  • Non-directional Overcurrent Protection Relay Testing Using Virtual Hardware-in-the-Loop Device 

    Pham, Le Nam Hai; Wagle, Raju; Gonzalez-Longatt, Francisco; Acosta Montalvo, Martha Nohemi (Chapter; Bokkapittel, 2023-05-17)
    Protective relays are an integral part of the power grid, making it reliable and secure against abnormal conditions. Hardware-in-the-Loop (HIL) can be employed to test and validate digital protective relay devices in the real-time simulation comprising hardware and software before actual implementation. However, the HIL technique requires a complex and high-cost technical environment consisting of ...
  • Take-Home Exams in University Mathematics and Science Subjects: Some Ethical Considerations 

    Rensaa, Ragnhild Johanne; Kristiansen, Raymond (Journal article; Tidsskriftartikkel; Peer reviewed, 2024)
    This article addresses some challenging perspectives related to offering take-home exams in mathematics at university level. The challenges arose during work on a previous article where four perspectives originating from Bjerrum Nielsen’s framework (2003) were used to analyze universities’ assessment methods during the Covid lockdown in our country. The perspectives had some ethical considerations ...
  • Stabilization of Non-Cooperative Satellites in Low Earth Orbits using Inter-Satellite Atmospheric Drag 

    Oland, Espen; Kristiansen, Raymond (Chapter; Bokkapittel, 2023-08-07)
    This paper presents a novel solution to the problem of stabilization of non-cooperative satellites in low Earth orbits, which utilizes inter-satellite aerodynamic drag effects for generation of aerodynamics moments in the wake of a controlled satellite. Hence, by altering the position of a smaller controlled satellite, we are able to change the wake region and thus provide aerodynamic moments for ...
  • Under Seawater Capacitive Power Transfer for Maritime Charging Applications 

    Al-Sallami, Hussein Mahdi Yaseen; Hattori, Reiji; Hoff, Bjarte; Østrem, Trond (Chapter; Bokkapittel, 2023-09-12)
    Underwater capacitive power transfer (CPT) can provide an inexpensive and light electric charging solution with good misalignment tolerance for unmanned maritime vehicles. This paper investigates the effect of the changing of the frequency and the distance on the power transfer and overall efficiency of the underwater CPT system, considering the dielectric losses of the medium. It also proposes and ...
  • Home Load Disaggregation using Deep Learning and Bayesian Optimization: A Case Study in Arctic Climate in Northern Norway 

    Kianpoor, Nasrin; Hoff, Bjarte; Østrem, Trond (Chapter; Bokkapittel, 2023-08-03)
    Load monitoring is an essential task in energy management systems. In this paper, an approach that relies on a long short-term memory (LSTM) model and a discrete wavelet transform (DWT) filter is presented to estimate the energy usage of flexible appliances. In the preprocessing stage, the main features of the aggregated power signal are extracted using DWT. Deep learning methods are very sensitive ...
  • Classification of bulk cargo types stored openly at ports using CNN 

    Koirala, Madhu; Ellingsen, Pål Gunnar; Ådland, Roar Os (Chapter; Bokkapittel, 2023-10-20)
    In this paper, we present a novel concept of tracking cargoes at open ports using remote sensing images and convolution neural network (CNN) to classify various dry bulk commodities. The dataset used is prepared using Sentinel-2 atmospherically corrected (Sentinel-2 L2A) images covering 12 spectral bands. There are total 4995 labeled and geo-referenced images for four different cargoes-bauxite, coal, ...
  • Digital Controller Design and Implementation for AC and DC Side of 3ph qZSI 

    Agrawal, Shwetank; Tyagi, Barjeev; Kumar, Vishal; Sharma, Pawan (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-28)
    This article presents the multi-loop digital controller design of a quasi-z-source inverter (qZSI). The qZSI is a single-stage power converter and can operate in buck and boost modes. The qZSI is an economical solution for distributed generation and eliminates the need for two-stage power conversion. This article proposes a detailed step-wise digital controller design using a multi-loop control ...
  • Performance Analysis of Bidirectional Multi-Hop Vehicle-to-Vehicle Visible Light Communication 

    Refas, Souad; Acheli, Dalila; Yahia, Selma; Meraihi, Yassine; Ramdane-Cherif, Amar; Van, Nhan Vo; Ho, Tu Dac (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-14)
    Vehicular visible light communication (VVLC) has emerged as a promising field of research, garnering considerable attention from scientists and researchers. VVLC offers a potential solution to enable connectivity and communication between travelling vehicles along the road by using their existing headlights (HLs) and taillights (TLs) as wireless transmitters and integrating photodetectors (PDs) ...
  • Current source Inverter for fuel cell Application 

    Hamad, Zainab (Master thesis; Mastergradsoppgave, 2023-08-14)
    In recent years, the scientific renaissance has turned towards alternative energy. Scientific research and dissertations of all degrees, doctoral, Master, and even bachelor's degrees include. Green energy and alternative solution to protect the environment from increasing pollution. Different inverters have been used to increase the potential for power resulting from devices that do not have the ...
  • Investigation of ballast water conditions using remote sensing. Suspended Particulate Matter Characterization in Emden Sea Port 

    Taña i Viñeta, Pau (Master thesis; Mastergradsoppgave, 2023-05-22)
    This thesis investigates the use of remote sensing techniques to study the conditions of ballast water in the northwestern port of Emden, Germany. Sentinel-2 data of the seaport has been collected and used in order to retrieve the suspended particulate matter (SPM), evaluating its distribution and checking for any time or spatial periodicity over the past 5 years. The aim of the study is to provide ...

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