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). vol. 1104.
• 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. vol. 54 (3).
• 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. vol. 17 (12).
• 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. vol. 1.

Part of book/report

• Perera, Aravinda; Nilsen, Roy. (2020) A Sensorless Control Method for IPMSM with an Open-Loop Predictor for Online Parameter Identification. The 23rd International Conference on Electrical Machines and Systems.
• Tiwari, Raghbendra; Nilsen, Roy. (2020) Analytical Loss Equations for Three Level Active Neutral Point Clamped Converters. IECON2020 The 46th Annual Conference of the IEEE Industrial Society.
• Tiwari, Raghbendra; Nilsen, Roy; Nysveen, Arne. (2020) Active NPC Converter for Variable Speed Operation of Pumped Storage Hydropower Plant. IECON2020 The 46th Annual Conference of the IEEE Industrial Society.
• Tiwari, Raghbendra; Nilsen, Roy. (2019) Active Compensation of Unbalanced Load Currents in Grid Connected Voltage Source Converters. 2019 10th International Conference on Power Electronics and ECCE Asia - ICPE 2019 - ECCE Asia.
• 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. 43rd Annual Conference of the IEEE Industrial Electronics Society (IECON 2017).
• 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 Energy Conversion Congress and Expo (ECCE) 2017.
• Gullvik, William; Norum, Lars Einar; Nilsen, Roy. (2007) Active Damping of Resonance Oscillations in LCL-Filters Based on Virtual Flux and Virtual Resistor. EPE 2007 12th European Conference on Power Electronics and Applications.

Others

• Perera, Aravinda; Nilsen, Roy. (2020) A Method Based on Prediction-Error-Gradients to Estimate PMSM Parameters Online. IEEE IAS Annual Meeting ; 2020-10-11 - 2020-10-15.
• Perera, Aravinda; Nilsen, Roy. (2020) Gauss-Newton: A Prediction-Error-Gradient based Algorithm to Track PMSM Parameters Online. IEEE Power Electronics, Drives and Energy Systems (PEDES) ; 2020-12-16 - 2020-12-19.
• Perera, Aravinda; Nilsen, Roy. (2018) Electric motor drive system for highly reliable and productive mining machines for deep-sea. Underwater Mining Conference . International Marine Minerals Society (IMMS); Bergen. 2018-09-10 - 2018-09-14.
• 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. 2017 IEEE Energy Conversion Congress and Exposition (ECCE) . IEEE; Cincinnati, Ohio. 2017-10-01 - 2017-10-05.
• Gullvik, William; Norum, Lars Einar; Nilsen, Roy. (2007) Active Damping of Resonance Oscillations in LCL-Filters Based on Virtual Flux and Virtual Resistor. EPE 2007 - the 12th European Conference on Power Electronics and Applicartions . EPE Association; Ålborg. 2007-09-02 - 2007-09-05.
• Lund, Richard; Tomta, Gjermund; Nilsen, Roy. (2004) Output Harmonic Losses in Three-level Converters using Sine PWM with 3. Harmonic Injection. NORPIE 2004 . NTNU, Inst. for elkraftteknikk, energiomforming; NTNU, Trondheim. 2004-06-14 - 2004-06-16.
• Øvrebø, Sigurd; Nilsen, Roy; Nilssen, Robert. (2004) Saliency Modeling in Radial Flux Permanent Magnet Synchronous Machines. NORPIE 2004 . NTNU, Institutt for elkraftteknikk, Energiomforming; NTNU, Trondheim. 2004-06-14 - 2004-06-16.
• Øvrebø, Sigurd; Nilssen, Robert; Nilsen, Roy. (2004) High Frequency Flux Distribution in Permanent Magnet Synchronous Machines. NORPIE 2004 . NTNU, Inst.itutt for elkraftteknikk, energiomforming; NTNU, Trondheim. 2004-06-14 - 2004-06-16.
• 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 . [Mangler data]; Toulouse, France. 2003-09-04.
• 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 . [Mangler data]; New Zealand. 2003-10-01.
• Øvrebø, Sigurd; Nilsen, Roy. (2003) New self sensing scheme based on INFORM, heterodyning and Luenberger observer. IEEE International Electric Machines and Drives Conference . [Mangler data]; Madison, Wisconsin, USA. 2003-06-04.
• Lund, Richard; Beverfjord, Jonas; Øvrebø, Sigurd; Nilsen, Roy. (2002) Analytical power loss expressions for diode clamped converters. EPE-PEMC 2002 . [Mangler data]; Dubrovnik, Croatia. 2002-09-11.
• Lund, Richard; Tomta, Gjermund; Nilsen, Roy. (2002) Analytical Power Loss Expressions for diode clamped converters. NORPIE 2002 . [Mangler data]; Stockholm, Sweden. 2002-08-14.
• Tomta, Gjermund; Lund, Richard; Nilsen, Roy. (2002) Calculation of AC side harmonic losses in three-level converters. NORPIE 2002 . [Mangler data]; Stockholm, Sweden. 2002-08-14.
• Nilsen, Roy; Tomta, Gjermund. (2001) Analytical equations for three level NPC converters. 9th European Conference on Power Electronics and Applications . [Mangler data]; Graz, Austria. 2001-08-29.
• 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 . [Mangler data]; Trondheim.
• 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 . [Mangler data]; Trondheim.