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Knut Brede Liland

Research Scientist

Knut Brede Liland

Research Scientist

Knut Brede Liland
Phone: 902 66 512
Email:
Department: Electric Power Technology
Office: Trondheim

Publications and responsibilities

Publication
https://www.sintef.no/en/publications/publication/?pubid=1872869

Dielectric liquids are incompressible, able to fill voids and have selfhealing effect and hence are being considered as alternative encapsulation materials to establish power electronics at ambient high pressure at subsea conditions. In a long-term endurance test, insulated-gate bipolar transistor...

Authors Abdelghaffar Amoka Abdelmalik Knut Brede Liland
Year 2020
Type Academic article
Publication
https://www.sintef.no/en/publications/publication/?pubid=1715786

The adhesion between coating and a flat metal surface has been investigated by measurements. The setup is based on the formation of a blister by injecting nitrogen gas under pressure between the coating and the substrate. The adhesion energy is determined by recording the pressure as a function...

Authors Knut Brede Liland Hallvard Faremo Knut-Magne Furuheim
Year 2019
Type Academic article
Publication
https://www.sintef.no/en/publications/publication/?pubid=1526050

For transformers in service, aging markers from cellulose in oil such as furans, water, methanol and acids are measured for diagnostic purposes. The content of these indicators, measured in oil, may therefore vary with load, temperature, solid and liquid insulation aging, as well as marker stability...

Authors Knut Brede Liland Dag Linhjell Cedric Lesaint Marit-Helen Glomm Ese Lars Lundgaard Pascal Mavrommatis Nenad Miroljub Stjepanovic
Year 2017
Type Academic chapter/article/Conference paper
Publication
https://www.sintef.no/en/publications/publication/?pubid=1385622

To facilitate operation of power electronics for subsea operation at ambient pressure components have to be submerged in a liquid. Equipment and schemes for testing of long term properties have been developed. Several techniques were used to investigate compatibility between a silicone gel and...

Year 2016
Type Academic chapter/article/Conference paper
Publication
https://www.sintef.no/en/publications/publication/?pubid=1354038

Compatibility between solid and liquid electrical insulation materials has been studied using an isothermal microcalorimeter. This work compares the micro-calorimeter measurements with a simple volume and mass increase for the solid material also capable of indicating incompatibility and...

Year 2016
Type Academic article
Publication
https://www.sintef.no/en/publications/publication/?pubid=1060702

This report addresses state of the art in the field of transformer ageing and diagnostics, with emphasis on advising end-users on transformer asset management and on transformer specification. The basis is results from two projects on laboratory studies on ageing of mineral oil impregnated cellulose...

Authors Lars Lundgaard Knut Brede Liland Dag Linhjell Dejan Susa Marit-Helen Glomm Ese Cecilie Mørk Selsbak M Kes Cedric Lesaint
Year 2015
Type Report
Publication
https://www.sintef.no/en/publications/publication/?pubid=1162815

Water is an important enemy of an electric insulation system. Water vapour can be absorbed by electrical insulation materials (liquids or solid) and migrate in between the materials to achieve the same relative humidity equilibrium everywhere. Water can reduce withstand voltage of the insulation...

Year 2014
Type Academic chapter/article/Conference paper