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Språkvelger

Norsk

Roy Nilsen

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Roy Nilsen

Professor
Department of electric energy

roy.nilsen@ntnu.no
+4795178363 +4773594285 Elektro E/F, Gløshaugen
Publications Teaching Outreach

Publications

  • Chronological
  • By category
  • See all publications in Cristin

2020

  • Tiwari, Raghbendra; Nilsen, Roy. (2020) Analytical Loss Equations for Three Level Active Neutral Point Clamped Converters. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Tiwari, Raghbendra; Nilsen, Roy; Nysveen, Arne. (2020) Active NPC Converter for Variable Speed Operation of Pumped Storage Hydropower Plant. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Perera, Aravinda; Nilsen, Roy. (2020) A Sensorless Control Method for IPMSM with an Open-Loop Predictor for Online Parameter Identification. IEEE conference proceedings
    Academic chapter/article/Conference paper

2019

  • Tiwari, Raghbendra; Nilsen, Roy. (2019) Active Compensation of Unbalanced Load Currents in Grid Connected Voltage Source Converters . IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper

2018

  • Tiwari, Subhadra; Undeland, Tore Marvin; Midtgård, Ole-Morten; Nilsen, Roy. (2018) SiC MOSFETs for Offshore Wind Applications. Journal of Physics: Conference Series (JPCS)
    Academic article
  • Valavi, Mostafa; Devillers, Emile; Le Besnerais, Jean; Nysveen, Arne; Nilsen, Roy. (2018) Influence of Converter Topology and Carrier Frequency on Airgap Field Harmonics, Magnetic Forces, and Vibrations in Converter-Fed Hydropower Generator . IEEE transactions on industry applications
    Academic article

2017

  • Valavi, Mostafa; Nysveen, Arne; Nilsen, Roy. (2017) Investigation of magnetic field and radial force harmonics in a hydrogenerator connected to a three-level NPC converter. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Valavi, Mostafa; Nysveen, Arne; Nilsen, Roy; Le Besnerais, Jean; Devillers, Emile. (2017) Analysis of magnetic forces and vibration in a converter-fed synchronous hydrogenerator. IEEE conference proceedings
    Academic chapter/article/Conference paper

2014

  • Gjerde, Sverre Skalleberg; Ljøkelsøy, Kjell; Nilsen, Roy; Undeland, Tore Marvin. (2014) A modular series connected converter structure suitable for a high-voltage direct current transformerless offshore wind turbine. Wind Energy
    Academic article

2007

  • Tamrakar, I; Shilpakar, LB; Fernandes, BG; Nilsen, Roy. (2007) Voltage and frequency control of parallel operated synchronous generator and induction generator with STATCOM in micro hydro scheme. IET Generation, Transmission & Distribution
    Academic article
  • Gullvik, William; Norum, Lars Einar; Nilsen, Roy. (2007) Active Damping of Resonance Oscillations in LCL-Filters Based on Virtual Flux and Virtual Resistor. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper

Journal publications

  • Tiwari, Subhadra; Undeland, Tore Marvin; Midtgård, Ole-Morten; Nilsen, Roy. (2018) SiC MOSFETs for Offshore Wind Applications. Journal of Physics: Conference Series (JPCS)
    Academic article
  • Valavi, Mostafa; Devillers, Emile; Le Besnerais, Jean; Nysveen, Arne; Nilsen, Roy. (2018) Influence of Converter Topology and Carrier Frequency on Airgap Field Harmonics, Magnetic Forces, and Vibrations in Converter-Fed Hydropower Generator . IEEE transactions on industry applications
    Academic article
  • Gjerde, Sverre Skalleberg; Ljøkelsøy, Kjell; Nilsen, Roy; Undeland, Tore Marvin. (2014) A modular series connected converter structure suitable for a high-voltage direct current transformerless offshore wind turbine. Wind Energy
    Academic article
  • Tamrakar, I; Shilpakar, LB; Fernandes, BG; Nilsen, Roy. (2007) Voltage and frequency control of parallel operated synchronous generator and induction generator with STATCOM in micro hydro scheme. IET Generation, Transmission & Distribution
    Academic article

Part of book/report

  • Tiwari, Raghbendra; Nilsen, Roy. (2020) Analytical Loss Equations for Three Level Active Neutral Point Clamped Converters. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Tiwari, Raghbendra; Nilsen, Roy; Nysveen, Arne. (2020) Active NPC Converter for Variable Speed Operation of Pumped Storage Hydropower Plant. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Perera, Aravinda; Nilsen, Roy. (2020) A Sensorless Control Method for IPMSM with an Open-Loop Predictor for Online Parameter Identification. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Tiwari, Raghbendra; Nilsen, Roy. (2019) Active Compensation of Unbalanced Load Currents in Grid Connected Voltage Source Converters . IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper
  • Valavi, Mostafa; Nysveen, Arne; Nilsen, Roy. (2017) Investigation of magnetic field and radial force harmonics in a hydrogenerator connected to a three-level NPC converter. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Valavi, Mostafa; Nysveen, Arne; Nilsen, Roy; Le Besnerais, Jean; Devillers, Emile. (2017) Analysis of magnetic forces and vibration in a converter-fed synchronous hydrogenerator. IEEE conference proceedings
    Academic chapter/article/Conference paper
  • Gullvik, William; Norum, Lars Einar; Nilsen, Roy. (2007) Active Damping of Resonance Oscillations in LCL-Filters Based on Virtual Flux and Virtual Resistor. IEEE (Institute of Electrical and Electronics Engineers)
    Academic chapter/article/Conference paper

Teaching

Courses

  • TET4555 - Kraftelektronikk - systemer og komponenter, fordypningsemne
  • TET4190 - Kraftelektronikk
  • ET8305 - Modellering, Identifikasjon og regulering av elektriske maskiner
  • ET6203 - Integrasjon av nye energikilder og komponenter med omformere som grensesnitt til kraftnettet
  • TET4120 - Elektriske motordrifter

Outreach

2018

  • Poster
    Perera, Aravinda; Nilsen, Roy. (2018) Electric motor drive system for highly reliable and productive mining machines for deep-sea. International Marine Minerals Society (IMMS) Underwater Mining Conference , Bergen 2018-09-10 - 2018-09-14

2017

  • Academic lecture
    Valavi, Mostafa; Nysveen, Arne; Nilssen, Robert; Nilsen, Roy; Besnerais, Jean Le; Devillers, Emile. (2017) Analysis of magnetic forces and vibration in a converter-fed synchronous hydrogenerator . IEEE 2017 IEEE Energy Conversion Congress and Exposition (ECCE) , Cincinnati, Ohio 2017-10-01 - 2017-10-05

2007

  • Academic lecture
    Gullvik, William; Norum, Lars Einar; Nilsen, Roy. (2007) Active Damping of Resonance Oscillations in LCL-Filters Based on Virtual Flux and Virtual Resistor. EPE Association EPE 2007 - the 12th European Conference on Power Electronics and Applicartions , Ålborg 2007-09-02 - 2007-09-05

2004

  • Poster
    Lund, Richard; Tomta, Gjermund; Nilsen, Roy. (2004) Output Harmonic Losses in Three-level Converters using Sine PWM with 3. Harmonic Injection. NTNU, Inst. for elkraftteknikk, energiomforming NORPIE 2004 , NTNU, Trondheim 2004-06-14 - 2004-06-16
  • Poster
    Øvrebø, Sigurd; Nilssen, Robert; Nilsen, Roy. (2004) High Frequency Flux Distribution in Permanent Magnet Synchronous Machines. NTNU, Inst.itutt for elkraftteknikk, energiomforming NORPIE 2004 , NTNU, Trondheim 2004-06-14 - 2004-06-16
  • Poster
    Øvrebø, Sigurd; Nilsen, Roy; Nilssen, Robert. (2004) Saliency Modeling in Radial Flux Permanent Magnet Synchronous Machines. NTNU, Institutt for elkraftteknikk, Energiomforming NORPIE 2004 , NTNU, Trondheim 2004-06-14 - 2004-06-16

2003

  • Academic lecture
    Øvrebø, Sigurd; Nilsen, Roy. (2003) New self sensing scheme based on INFORM, heterodyning and Luenberger observer. IEEE International Electric Machines and Drives Conference , Madison, Wisconsin, USA 2003-06-04 -
  • Academic lecture
    Øvrebø, Sigurd; Nilsen, Roy. (2003) New self sensing scheme based on INFORM, heterodyning and Luenberger observer. The 2003 Australasian Universities Power Engineering Conference - AUPEC 2003 , New Zealand 2003-10-01 -
  • Academic lecture
    Lund, Richard; Tomta, Gjermund; Nilsen, Roy. (2003) Analytical Calculations of AC Side Harmonic Losses in Three-Level Converters. The 10th European Conference on Power Electronics and Applications - EPE 2003 , Toulouse, France 2003-09-04 -

2002

  • Academic lecture
    Tomta, Gjermund; Lund, Richard; Nilsen, Roy. (2002) Calculation of AC side harmonic losses in three-level converters. NORPIE 2002 , Stockholm, Sweden 2002-08-14 -
  • Academic lecture
    Lund, Richard; Beverfjord, Jonas; Øvrebø, Sigurd; Nilsen, Roy. (2002) Analytical power loss expressions for diode clamped converters. EPE-PEMC 2002 , Dubrovnik, Croatia 2002-09-11 -
  • Academic lecture
    Lund, Richard; Tomta, Gjermund; Nilsen, Roy. (2002) Analytical Power Loss Expressions for diode clamped converters. NORPIE 2002 , Stockholm, Sweden 2002-08-14 -

2001

  • Academic lecture
    Nilsen, Roy; Tomta, Gjermund. (2001) Analytical equations for three level NPC converters. 9th European Conference on Power Electronics and Applications , Graz, Austria 2001-08-29 -

1997

  • Academic lecture
    Melaa, T.; Ådnanes, A.K.; Øye, K.; Nestli, T.F.; Nilsen, Roy; Ranstad, P.. (1997) Evaluation of resonant converters for increased softswitching range. 7th European Conference on Power Electronics and Applications , Trondheim
  • Academic lecture
    Edvardsen, P.A.; Nestli, T.F.; Nilsen, Roy; Kolstad, Helge. (1997) Steady-state power flow and efficiency optimizing analysis of a variable speed constant frequency generating system. 7th European Conference on Power Electronics and Applications , Trondheim

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