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Niklas Magnusson

Seniorforsker

Niklas Magnusson

Seniorforsker

Niklas Magnusson
Telefon: 907 18 577
Mobil: 907 18 577
Avdeling: Elkraftteknologi
Kontorsted: Trondheim

Publikasjoner og ansvarsområder

Publikasjoner

Publikasjon

Ripple Field AC Losses in 10-MW Wind Turbine Generators With a MgB2 Superconducting Field Winding

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1353640

Superconducting (SC) synchronous generators are proposed as a promising candidate for 10–20-MW direct-drive wind turbines because they can have low weights and small sizes. A common way of designing an SC machine is to use SC wires with high current-carrying capability in the dc field winding and th...

Forfattere Liu Dong Polinder Henk Magnusson Niklas Schellevis Joost Abrahamsen Asger B.
År 2016
Type Tidsskriftsartikkel
Publikasjon

Design Aspects on Winding of an MgB2 Superconducting Generator Coil

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1299109

Generators based on superconducting rotor coils are considered for future large off-shore wind turbines for their low weight and compact design, and for their possibility to reduce costs. In the 10-20 K temperature range, MgB2 superconductors carry current densities 100 times higher than standard co...

Forfattere Magnusson Niklas Eliassen J. C. Abrahamsen A.B. Nysveen Arne Bjerkli Jarle Runde Magne E King Patrick
År 2015
Type Tidsskriftsartikkel
Publikasjon

Hysteresis losses in MgB2 superconductors exposed to combinations of low AC and high DC magnetic fields and transport currents

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1142765

MgB2 superconductors are considered for generator field coils for direct drive wind turbine generators. In such coils, the losses generated by AC magnetic fields may generate excessive local heating and add to the thermal load, which must be removed by the cooling system. These losses must be evalua...

Forfattere Magnusson Niklas Abrahamsen A.B. Liu D Runde Magne E Polinder Henk
År 2014
Type Tidsskriftsartikkel
Publikasjon

Challenges and opportunities in preventing bird electrocution in Coastal Norway

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1129225

Norway has approximately 165 000 km of overhead power lines in the distribution grid system, thus numerous structures are representing a high electrocution hazard to birds. With its long coastline and scattered human population, a significant part of the grid is located in marine environments with h...

Forfattere Bevanger Kjetil Modolv Dahl Espen Lie Gjershaug Jan Ove Magnusson Niklas Refsnæs Steinar
År 2014
Type Konferanseartikkel/Bokkapittel
Publikasjon

Coupling currents and hysteresis losses in MgB2superconductors

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1162552

MgB2 multi-filamentary superconductors are widely considered for use in dc applications. To expand the possible application range to ac apparatuses, the development of a low ac loss wire is needed. This development involves several steps, and a solid understanding of the loss mechanisms is important...

Forfattere Magnusson Niklas Lindau Sandra Madeleine Taxt Henning Runde Magne E
År 2014
Type Tidsskriftsartikkel
Publikasjon

A Method to Estimate the Necessary Twist Pitch in Multi-filamentary Superconductors

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1133525

Twisting of multi-filamentary superconductors is an important step in the development of wires with AC losses at an acceptable level for AC applications. The necessary twist pitch depends on wire architecture, critical current density, matrix material, and external factors such as temperature, frequ...

Forfattere Lindau Sandra Madeleine Magnusson Niklas Taxt Henning
År 2014
Type Tidsskriftsartikkel
Publikasjon

Design of an MgB2 race track coil for a wind generator pole demonstration

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1133526

An MgB2 race track coil intended for demonstrating a down scaled pole of a 10 MW direct drive wind turbine generator has been designed. The coil consists of 10 double pancake coils stacked into a race track coil with a cross section of 84 mm × 80 mm. The length of the straight section is 0.5 m and t...

Forfattere Abrahamsen Asger B Magnusson Niklas Jensen Bogi B Liu Dong Polinder Henk
År 2014
Type Tidsskriftsartikkel
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