Roy Nilsen
Publications
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 - Power Electronics and Components, Specialisation Course
- TET4190 - Power Electronics
- ET8305 - Modeling, Identification and Control of Electrical Machines
- ET6203 - Integration of converter interfaced generation and loads in the power grid
- IELET2121 - Power Electronics
- TET4120 - Electric Drives
Outreach
2018
-
PosterPerera, 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 lectureValavi, 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 lectureGullvik, 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
-
PosterLund, 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
-
PosterØvrebø, 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
-
PosterØvrebø, 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 lectureØvrebø, 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 lectureØvrebø, 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 lectureLund, 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 lectureTomta, Gjermund; Lund, Richard; Nilsen, Roy. (2002) Calculation of AC side harmonic losses in three-level converters. NORPIE 2002 , Stockholm, Sweden 2002-08-14 -
-
Academic lectureLund, 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 lectureLund, Richard; Tomta, Gjermund; Nilsen, Roy. (2002) Analytical Power Loss Expressions for diode clamped converters. NORPIE 2002 , Stockholm, Sweden 2002-08-14 -
2001
-
Academic lectureNilsen, 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 lectureMelaa, 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 lectureEdvardsen, 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