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