Blar i Institutt for elkraftteknikk på utgivelsesdato
Viser treff 101-120 av 2420
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AC machine control: Robust and sensorless control by parameter independency
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:124, Doctoral thesis, 2009)In this thesis it is first presented how robust control can be used to give AC motor drive systems competitive dynamic performance under parameter variations. These variations are common to all AC machines, and are a result ... -
Stability Investigation of an Advanced Electrical Rail Vehicle: Investigation of the Effect of Nonlinearity Introduced by a Switching Model of an Advanced Electrical Rail Vehicle on the General Performance and The Stability Limits
(Master thesis, 2009)Reducing grid harmonics and increasing grid stability are both major issues for the operation of rail vehicles. For stability investigation of complex power systems, simplified system models are in need in order to reduce ... -
Wave Energy Conversion: Simulation Verification and Linearization of Direct Drive Wave Energy Converter with Variable DC-link Voltage Control
(Master thesis, 2009)Lowering the cost of wave energy conversion is an essential task for it to succeed as a future energy resource. In this work a converter, assumed cheaper than the regular back to back converter setting, have been investigated ... -
Economic Benefit of New Capacity in the Central Grid
(Master thesis, 2009)Norway and the EU have in recent years established ambitious goals to increase the share of renewable energy in their consumption. On account of these goals, a large-scale wind power development can be expected in northern ... -
Integrated Gas and Electricity Markets in eTransport
(Master thesis, 2009)The liberation of gas and electricity markets in Europe has created a need for a better understanding on how the two energy systems interact and depend on each other. A declining domestic gas production has motivated ... -
Spenningskvalitet i distribusjonsnettet
(Master thesis, 2009)Forskrift om leveringskvalitet i kraftsystemet setter krav til spenningskvaliteten. For å kontrollere at spenningen er innenfor forskriftskravene er det viktig å utføre målinger på sentrale punkter i kraftnettet. Det er ... -
System Analysis of Large-Scale Wind Power Integration in North-Western Europe: A study on the impact of large-scale wind power expansion and on the impact of a North Sea offshore grid
(Master thesis, 2009)Problem description: The objective of this project was to create a simple model of the European power system and to investigate the effect an increasing amount of on- and offshore wind power will have on the North European ... -
Optimale bud for en vindkraftpark
(Master thesis, 2009)Formålet med denne masteroppgaven er å utvikle, implementere og teste en algoritme for optimale bud i Elspot for en gitt vindkraftpark. Bakgrunnen for dette er innføring av nytt prissystem for balanseavregning i ... -
Stability Studies of an Offshore Wind Farms Cluster Connected with VSC-HVDC Transmission to the NORDEL Grid
(Master thesis, 2009)Offshore wind power has proven to be a renewable energy source with a high potential, especially in the North Sea, where an important development is going on. The location of the wind farms tends to move far from the coast ... -
Simulering av spenningskvalitet i kraftnett
(Master thesis, 2009)Spenningskvaliteten har fått et større fokus de siste tiårene, dette har stor sammenheng med utviklingen av mye nytt og følsomt utstyr som kobles til kraftnettet. Utstyr som ofte består av mye kraftelektronikk. Bruk av ... -
Opprustning av Svorkmo kraftverk
(Master thesis, 2009)TrønderEnergi ønsker å undersøke om innsetting av et tredje aggregat i Svorkmo kraftverk vil gi økt produksjonsgevinst, bedret totalvirkningsgrad ved lave vannføringer og mer fleksibel drift av vassdraget. Svorkmo kraftverk ... -
Offshore Power Transmission: Submarine high voltage transmission alternatives
(Master thesis, 2009)Offshore power transmission is becoming an increasingly important issue. To moderate climate change, world leaders have set environmental goals that will be very difficult to reach without renewable power production and ... -
Energy Storage Solutions for Wave Energy in Stand Alone Systems
(Master thesis, 2009)Energy Storage technology is a key to further development of renewable energy sources. The objective of this master thesis is wave energy in a Stand Alone System. Two point absorber systems developed by FOBOX, Fred Olsens ... -
Development of Procedures for Analysis of PMSM based on Simplified Permeance Network
(Master thesis, 2009)Today, Finite Element Method is the most popular way for modeling and analyzing the behavior of electric machines. However, this method cannot be used when there is a need for fast calculations during the sizing and, ... -
Energisparepotensiale ved bruk av intelligente veilyssystemer
(Master thesis, 2009)Norge har et stort energiforbruk i sine mange vei- og gatelys landet rundt. Anslagene for energiforbruket varierer fra 0,8 til over 2 TWh. Uansett er energiforbruket betydelig høyere enn i Europa. Dette skyldes blant annet ... -
Stabilitetsanalyse ved integrasjon av Midtfjellet Vindpark i kraftsystemet
(Master thesis, 2009)Samandrag Sunnhordland Kraftlag (SKL) ynskjer å undersøkja integrasjon av Midtfjellet Vindpark (MVP) på 150 MW i kraftsystemet, spesielt integreringa i 66 kV-nettet og endringa som er pålagd i nettet. Det er i konsesjonen ... -
Nettutviklingsplan for Tromsøya-Nord
(Master thesis, 2009)Tromsø by er under konstant utvikling, både når det gjelder økning av innbyggertall og etablering av ny industri. Formålet med oppgaven er å utvikle en nettutviklingsplan for 11 kV distribusjonsnett forsynt fra Gimle ... -
Losses and Inductive Parameters in Subsea Power Cables
(Master thesis, 2009)Four samples of galvanized steel armour for sub sea power cables are tested with an electric steel tester. The samples exhibit different remanence magnetization and permeability. The effects of permeability on loss in sub ... -
Optimal use of the hydro resources in Albania
(Master thesis, 2009)This Master thesis analyzes the optimal use of the hydro resources in Albania. Albania is a country totally dependent on hydro power. More than 90% of the electricity today comes from hydro power, mainly from the Drin river ... -
Investigation of the Doubly Fed Permanent Magnet Synchronous Machine
(Master thesis, 2009)This master thesis treats the research of a novel generator with converter design called Doubly Fed Permanent Magnet Synchronous Machine , DF-PMSM, patented by SmartMotor. The thesis includes an introduction to the ...