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norskInstitutt for elektroteknologi
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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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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 ... -
Optimization of industrial power grid of Narvik
(Master thesis; Mastergradsoppgave, 2023-05-22)The objective of this study is to review a comprehensive plan for optimization framework for the industrial power grid. Few factors considered such as power generation, transmission, distribution, energy storage solutions, cost development. The aim targets an overview of planning and optimization for a hydrogen production plant in Narvik region. It will improve the overall efficiency, stability, ... -
Energy Conversion and Control of Hydrogen Fuel Cell Based Electric Transport
(Master thesis; Mastergradsoppgave, 2023-05-22)The research investigates the effective utilization of hydrogen fuel cells in electric transport applications, addressing the challenges associated with power generation, energy storage, and control. By implementing the MPPT Perturb and Observe (P&O) technique, the thesis aims to optimize the power output of the fuel cell system, ensuring maximum efficiency and performance. To enhance the overall ... -
Solar angle optimizer
(Master thesis; Mastergradsoppgave, 2023-05-22)The demand for renewable energy sources has increased significantly in recent years due to the growing concerns about climate change and environmental sustainability. Solar energy has emerged as one of the most promising and widely used renewable energy sources. However, the efficiency and output of solar energy systems depend on various factors, including the position of the sun, the angle ... -
Investigation of wireless electrification for a reconfigurable manufacturing cell
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-24)Reconfigurable manufacturing systems (RMS) with a rearrangeable structure can quickly adjust their productivity to meet the dynamic market changes and the demand for high-variety products. Industry 4.0 technologies have enhanced the RMS flexibility and made the automation of the reconfiguration of the manufacturing system possible. As an Industry 4.0 technology, wireless power transfer (WPT) can ... -
Designing and Implementation of grid-connected separately excited DC Machine
(Master thesis; Mastergradsoppgave, 2023-05-22)This thesis presents the design and implementation of SEDC machine which was located at machine laboratory in UiT Narvik campus. To improve the efficiency and to have automatic control, the old passive control needs to be replaced with DC-DC converters based active control method. This thesis explores various DC-DC and grid connected converter with the goal to find a suitable and most efficient for ... -
Current source inverter
(Master thesis; Mastergradsoppgave, 2023-05-22)ABSTRACT The growth of the world’s population leads to increased energy needs. The use of fossil energy leads to challenges. The main reason for this is that the use of fossil fuels has a negative impact on global climate change, and the world is heading towards running out of fossil fuels in a few years. Renewable energy sources like photovoltaic and wind power plants are good solutions for those ... -
Prestasjonsoppfølging av elektriske brytere via datahøsting og analyse av plattformdata
(Master thesis; Mastergradsoppgave, 2023-05-21)This thesis is a study of data material extracted from log files belonging to the oil and gas installation Norne. The data is put into a system, analyzed, and assessed how it can be used to drive performance monitoring of electrical switches. The thesis presents theory related to the task about ignition source, tag, maintenance and time determinations, the systems SAS and SMS on which the logs are ... -
Seasonal storage of energy at UiT the arctic university of Norway in Narvik
(Master thesis; Mastergradsoppgave, 2023-05-22)The thesis examines which energy production methods are suitable together with seasonal storage of energy at UiT the arctic university of Norway in Narvik. Nordkraft has provided the subject which has been examined. The location of UiT Narvik together with its areas and storage volumes have been examined for what power production methods and energy storage methods are suitable for this location. ... -
Integrating sensors for robots operating on offshore oil and gas platforms
(Master thesis; Mastergradsoppgave, 2023-05-21)This thesis presents a solution to integrate sensors and instruments on a robot to be used instead of operators on unmanned oil and gas offshore platforms. Operators have various tasks from inspection to maintenance in the platforms. Because of high costs of having operators in offshore platforms, there has been always an ambitious to design a fully unmanned automated platform to decrease the costs ...
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