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Transition to DC distribution grids
(Master thesis; Mastergradsoppgave, 2017-08-15)
"The war between AC and DC has emerged once again due to the rapid development and advancement of electric power technologies. Nowadays, power electronics and DC/DC converters are able to change voltage levels, which could only be achieved by an AC transformer hundred years ago. Rising trend development of electric vehicle and renewable energy technology have led to an urgency for re-evaluation of ...
Modelling and simulating a hybrid electric vehicle
(Master thesis; Mastergradsoppgave, 2017-06-12)
This thesis presents an overview of the different types of hybrid electric vehicle structures and basic guidelines regarding choice of components. The simulation model of a hybrid electric vehicle was created for this thesis to investigate the impact on fuel efficiency in relation to rolling resistance coefficient and vehicle weight. Although the model is not designed for optimal engine operation, ...
DC distribution systems
(Master thesis; Mastergradsoppgave, 2017-06-12)
In today’s distribution system, the dominating type of current used is AC. In newer time, improvements have been done within the field of DC. The developments that are achieved, are in terms of converter efficiency and conversion capabilities. Along with development of DC equipment, the use and development of renewable energy sources have increased. This has brought up the topic of using DC in the ...
Electric vehicles and vehicle-to-grid technology. How utilities can play a role
(Master thesis; Mastergradsoppgave, 2017-06-12)
Adverse effects of fossil fuel burning internal combustion engine vehicles has alarmed nations worldwide. With recent technological advancements in electric vehicle industry, governments throughout the world are promoting wider adoption of electric vehicles to mitigate environmental issues. However, increasing popularity of electric vehicles will pose a great threat to existing electric grids due ...
FPGA-based data acquisition system for GNSS receiver for LEO-satellites applications
(Master thesis; Mastergradsoppgave, 2017-06-12)
The modern Low Earth Orbit satellites (LEO-satellites) technology is highly complex and reliable than it was yesterday. Nowadays, the LEO-satellites applications extend from civilian to military applications. However, LEO-satellites require a Global Navigation Satellite System (GNSS) service, to achieve various tasks which require positioning and localizing. The challenge is to have a GNSS receiver ...
Design of a grid connected photovoltaic power electronic converter
(Master thesis; Mastergradsoppgave, 2017-06-12)
In this thesis, the designing of a grid-connected photovoltaic system for the power electronic laboratory of UiT- Campus Narvik has been carried out. The relevant topics and literature regarding the elements in a photovoltaic system and grid connection standards have been studied and reviewed. A system with the capacity and ratings of solar modules currently available has been designed in Simulink. ...
FPGA-based tracking system for GNSS receivers
(Master thesis; Mastergradsoppgave, 2017-06-12)
This report presents the design and simulation of code and carrier tracking system for a GNSS receiver. The GNSS receiver processes the signal sent by satellites in space. These signal contain carrier wave signal, ranging code and navigation data in encrypted form. To demodulate the navigation data, the processing block should accurately track the phase of incoming code and the frequency of incoming ...
Intelligent load frequency control in an isolated wind-solar PV-micro turbine-diesel based micro-grid using V2G integration
(Master thesis; Mastergradsoppgave, 2017-06-12)
Abstract Modern power systems need more intelligence and flexibility to maintain and control a generation load balance from subsequent serious disturbances due to the emerging of more renewable energy sources. This problem is becoming more significant today because of the increasing number of micro-grids (MGs). MGs usually use renewable energies in electrical production those fluctuate naturally. ...
Stabilitet i 22kV distribusjonsnett
(Master thesis; Mastergradsoppgave, 2017-05-18)
De senere årene har det vært en økning i utbygging av små produksjonsenheter i
distribusjonsnettet. I dag benyttes distribusjonsnettet i hovedsak til å fordele kraft fra
overliggende nett. En tilknytning av ny produksjon i slike nett vil medføre utfordringer
for netteier når det gjelder spenningskvalitet og leveringssikkerhet og krever ofte
oppgraderinger for å kunne opprettholde stabil og sikker ...
Design of an expandable junk catcher
(Master thesis; Mastergradsoppgave, 2017-06-15)
"This report describes phase I of the project ""Design of an expandable junk catcher"", which is carried out on behalf of Qinterra Technologies, Department of Plugs & Packers in Narvik, as a part of the subject SHO6263 Diploma thesis M-ID. The main purpose of the project is to develop a new type of well intervention equipment to solve the problem of unwanted residue from debris on temporary installed ...