2024

• Wu, Ze-Zheng; Nilssen, Robert Kristoffer; Shen, Jian-Xin. (2024) Utility and Application of a Versatile Analytical Method for MMF Calculation in AC Machines. CES Transactions on Electrical Machines and Systems (CES TEMS)
  Academic article
• Mellerud, Runar; Nilssen, Robert Kristoffer; Zhu, Zi-Qiang. (2024) Reduction of Stator Tooth Magnetic Saturation in Permanent Magnet Machines with Single-Layer Fractional Slot Concentrated Windings. Proceedings (International Conference on Electrical Machines) (ICEM)
  Academic article
• Zhang, Zhaoqiang; Nysveen, Arne; Fagermyr, Børge Johannes; Nilssen, Robert Kristoffer; Ehya, Hossein; Belkhode, Satish. (2024) Virtual-Stator Loss Model for Synchronous Generators With Fractional-Slot Winding. IEEE transactions on industry applications
  Academic article

2023

• Zhang, Zhaoqiang; Nysveen, Arne; Fagermyr, Børge Johannes; Chen, Anyuan; Ehya, Hossein; Nilssen, Robert Kristoffer. (2023) Material Characterization and Stator Core Loss Computation of Synchronous Generators With Stacking Force Accounted. IEEE transactions on industry applications
  Academic article
• Desmedt, Michiel; Bergesen, Samson; Nilssen, Robert Kristoffer. (2023) Characterization of a novel counter-rotating twin harmonic PM machine. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Hartmann, Christian Magnus; Mellerud, Runar; Nøland, Jonas Kristiansen; Nilssen, Robert Kristoffer. (2023) A Static FEA Framework for Fast Analysis of HTS Armature Windings in AC Superconducting SMPM Machines. IEEE transactions on energy conversion
  Academic article

2022

• Hartmann, Christian Magnus; Nøland, Jonas Kristiansen; Nilssen, Robert; Mellerud, Runar. (2022) Dual use of liquid hydrogen in a next-generation PEMFC-powered regional aircraft with superconducting propulsion. IEEE Transactions on Transportation Electrification
  Academic article
• Qin, Xuefei; Shen, Jianxin; Nilssen, Robert; Jacek, Gieras. (2022) Design of High-Speed PMSM Considering Multi-Physics Fields and Power Converter Constraints. Journal of Electrotechnical Technology
  Academic article
• Robles, Dany Josue Tome; Nilssen, Robert; Nøland, Jonas Kristiansen. (2022) Comparison of AC-Superconducting Multiphase Symmetric-Winding Topologies for Wind Power Generators With PM Rotors. IEEE Transactions on Applied Superconductivity (TAS)
  Academic article

2021

• Ehya, Hossein; Nysveen, Arne; Nilssen, Robert; Liu, Yujing. (2021) Static and Dynamic Eccentricity Fault Diagnosis of Large Salient Pole Synchronous Generators by means of External Magnetic Field. IET Electric Power Applications
  Academic article
• Sun, Yi; Lin, Yingqian; Wang, Yunchong; Nilssen, Robert; Shen, Jian-Xin. (2021) Theory of symmetric winding distributions and a general method for winding MMF harmonic analysis. IET Electric Power Applications
  Academic article

2020

• Ehya, Hossein; Nysveen, Arne; Nilssen, Robert. (2020) Pattern Recognition of Inter-Turn Short Circuit Fault in Wound Field Synchronous Generator via Stray Flux Monitoring. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Ehya, Hossein; Rødal, Gard Lyng; Nysveen, Arne; Nilssen, Robert. (2020) Condition Monitoring of Wound Field Synchronous Generator under Inter-turn Short Circuit Fault utilizing Vibration Signal. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Ehya, Hossein; Skreien, Tarjei N.; Nysveen, Arne; Nilssen, Robert. (2020) The Noise Effects on Signal Processors Used for Fault Detection Purpose. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Ehya, Hossein; Nysveen, Arne; Nilssen, Robert. (2020) A Practical Approach for Static Eccentricity Fault Diagnosis of Hydro-Generators. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Wang, Wei; Nysveen, Arne; Magnusson, Niklas; Nilssen, Robert. (2020) Fourier-based effective permeability for transformer iron losses computation under saturation. IET Electric Power Applications
  Academic article

2019

• Nøland, Jonas Kristiansen; Leandro, Matteo; Suul, Jon Are Wold; Molinas Cabrera, Maria Marta; Nilssen, Robert. (2019) Electrical Machines and Power Electronics for Starter-Generators in More Electric Aircrafts: A Technology Review. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Ehya, Hossein; Nysveen, Arne; Nilssen, Robert; Lundin, Urban. (2019) Time Domain Signature Analysis of Synchronous Generator under Broken Damper Bar Fault. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Wang, Wei; Nysveen, Arne; Magnusson, Niklas; Nilssen, Robert. (2019) Computation of transformer iron losses under saturation using the Fourier method Part 2: Stray loss. IEEE Xplore Digital Library
  Academic article

2017

• Røkke, Astrid; Nilssen, Robert. (2017) Analytical Calculation of Yoke Flux Patterns in Fractional-Slot Permanent Magnet Machines. IEEE transactions on magnetics
  Academic article
• Zhang, Zhaoqiang; Nilssen, Robert; Muyeen, S.M.; Nysveen, Arne; Al-Durra, Ahmed. (2017) Design optimization of ironless multi-stage axial-flux permanent magnet generators for offshore wind turbines. Engineering optimization (Print)
  Academic article
• Severson, Eric Loren; Nilssen, Robert; Undeland, Tore Marvin; Mohan, Ned. (2017) Design of Dual Purpose No-Voltage Combined Windings for Bearingless Motors. IEEE transactions on industry applications
  Academic article

2015

• Engevik, Erlend L.; Røkke, Astrid; Nilssen, Robert. (2015) Evaluating Hybrid Optimization Algorithms for Design of a Permanent Magnet Generator. IEEE Press
  Academic chapter/article/Conference paper
• Severson, Eric; Nilssen, Robert; Undeland, Tore Marvin; Mohan, Ned. (2015) Magnetic equivalent circuit modeling of the AC homopolar machine for flywheel energy storage. IEEE transactions on energy conversion
  Academic article
• Valavi, Mostafa; Nysveen, Arne; Nilssen, Robert. (2015) Effects of Loading and slot harmonic on Radial Magnetic Forces in Low-Speed Permanent Magnet Machine with Concentrated Windings. IEEE transactions on magnetics
  Academic article
• Severson, Eric; Nilssen, Robert; Undeland, Tore Marvin; Mohan, Ned. (2015) Dual-Purpose No-Voltage Winding Design for the Bearingless AC Homopolar and Consequent Pole Motors. IEEE transactions on industry applications
  Academic article

2014

• Severson, Eric; Nilssen, Robert; Undeland, Tore Marvin; Mohan, Ned. (2014) Outer-rotor ac homopolar motors for flywheel energy storage. IET Digital Library
  Academic chapter/article/Conference paper
• Severson, Eric; Nilssen, Robert; Undeland, Tore Marvin; Mohan, Ned. (2014) Dual purpose no voltage winding design for the bearingless ac homopolar and consequent pole motors. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Valavi, Mostafa; Nysveen, Arne; Nilssen, Robert; Rølvåg, Terje. (2014) Slot harmonic effect on magnetic forces and vibration in low-speed permanent-magnet machine with concentrated windings. IEEE transactions on industry applications
  Academic article
• Valavi, Mostafa; Nysveen, Arne; Nilssen, Robert. (2014) Effects of loading on radial magnetic forces in low-speed permanent magnet machine with concentrated windings. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Valavi, Mostafa; Matveev, Alexey; Nysveen, Arne; Nilssen, Robert. (2014) Multiple-airgap iron-cored direct-driven permanent magnet wind generators. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Valavi, Mostafa; Nysveen, Arne; Nilssen, Robert; Lorenz, Robert D.; Rølvåg, Terje. (2014) Influence of pole and slot combinations on magnetic forces and vibration in low-speed PM wind generators. IEEE transactions on magnetics
  Academic article
• Zhang, Zhaoqiang; Muyeen, S.M.; Al-Durra, Abel A.; Nilssen, Robert; Nysveen, Arne. (2014) Multiphysics 3D Modelling of Ironless Permanent Magnet Generators. Energy Procedia
  Academic article

2013

• Severson, Eric; Røkke, Astrid; Nilssen, Robert; Undeland, Tore Marvin; Mohan, Ned. (2013) Design and measurement of a passive thrust magnetic bearing for a bearingless motor. Proceedings of the Annual Conference of the IEEE Industrial Electronics Society (IECON)
  Academic article
• Zhang, Zhaoqiang; Chen, Anyuan; Matveev, Alexey; Nilssen, Robert; Nysveen, Arne. (2013) High-power generators for offshore wind turbines. Energy Procedia
  Academic article
• Valavi, Mostafa; Nysveen, Arne; Nilssen, Robert. (2013) Analysis of a low-speed PM Wind generator with concentrated windings in eccentricity conditions. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Valavi, Mostafa; Nysveen, Arne; Nilssen, Robert. (2013) Influence of slot harmonics on radial magnetic forces in low-speed PM machine with concentrated windings. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Severson, Eric; Nilssen, Robert; Undeland, Tore Marvin; Mohan, Ned. (2013) Suspension Force Model for Bearingless AC Homopolar Machines Designed for Flywheel Energy Storage. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Wu, D; Zhu, ZQ; Nilssen, Robert. (2013) Development of a segmented linear variable flux reluctance motor with DC-field coil. Applied Mechanics and Materials
  Academic article
• Wang, Kai; Zhu, ZQ; Nilssen, Robert. (2013) Using third harmonic for shape optimization of flux density distribution in linear permanent-magnet machine. Applied Mechanics and Materials
  Academic article
• Zhou, YJ; Zhu, ZQ; Nilssen, Robert. (2013) Comparison of linear switched flux permanent magnet machines. Applied Mechanics and Materials
  Academic article
• Røkke, Astrid; Nilssen, Robert. (2013) Marine Current Turbines and Generator preference. A technology review. The Renewable Energies and Power Quality Journal (RE&PQJ)
  Academic literature review

2012

• Valavi, Mostafa; Nysveen, Arne; Nilssen, Robert. (2012) Magnetic forces and vibration in permanent magnet machines with non-overlapping concentrated windings: A review. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Zhang, Shujun; Norum, Lars Einar; Nilssen, Robert; Lorenz, Robert D.. (2012) Down-the-Hole Hammer Drilling System Driven by a Tubular Reciprocating Translational Motion Permanent Magnet Synchronous Motor. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Valavi, Mostafa; Nysveen, Arne; Nilssen, Robert. (2012) Characterization of radial magnetic forces in low-speed permanent magnet wind generator with non-overlapping concentrated windings. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Olsen, Pål Keim; Gjerde, Sverre Skalleberg; Nilssen, Robert; Hølto, Jorunn; Hvidsten, Sverre. (2012) A Transformerless generator-converter concept making feasible a 100 kV light weight offshore wind turbine: Part I - The generator. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Severson, Eric; Nilssen, Robert; Undeland, Tore Marvin; Mohan, Ned. (2012) Analysis of the Bearingless AC Homopolar Motor. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Zhang, Zhaoqiang; Matveev, Alexey; Nilssen, Robert; Nysveen, Arne. (2012) Large-diameter Ironless Permanent Magnet Generator for Offshore Wind Power Application. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Zhang, Shujun; Norum, Lars Einar; Nilssen, Robert; Lorenz, Robert D.. (2012) Percussive Drilling Application of a Tubular Reciprocating Translational Motion Permanent Magnet Synchronous Motor. Journal of international Conference on Electrical Machines and Systems
  Academic article

2011

• Zhang, Zhaoqiang; Matveev, Alexey; Øvrebø, Sigurd; Nilssen, Robert; Nysveen, Arne. (2011) State of the art in generator technology for offshore wind energy conversion systems. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Zhang, Zhaoqiang; Matveev, Alexey; Øvrebø, Sigurd; Nilssen, Robert; Nysveen, Arne. (2011) Review of modeling methods in electromagnetic and thermal design of permanent magnet generators for wind turbines. IEEE conference proceedings
  Academic chapter/article/Conference paper

2010

• Zhang, Shujun; Norum, Lars Einar; Pedersen, Eilif; Nilssen, Robert. (2010) Tubular Linear Oscillatory Machine for Drilling Applications. Journal of Electrical Engineering
  Academic article
• Chen, Anyuan; Nilssen, Robert; Nysveen, Arne. (2010) Investigation of a three-Phase Flux-Switching Permanent Magnet Machine for Downhole Applications. IEEE Press
  Academic chapter/article/Conference paper
• Chen, Anyuan; Nilssen, Robert; Nysveen, Arne. (2010) Analytical Design of a High-torque flux-Switching Permanent Magnet Machine by a Simplified Lumped Parameter Magnetic Circuit Model. IEEE Press
  Academic chapter/article/Conference paper
• Zhang, Shujun; Norum, Lars Einar; Nilssen, Robert. (2010) Variable Voltage Variable Frequency Control of Tubular Linear Permanent Magnet Synchronous Machine for Drilling Applications. IEEE Press
  Academic chapter/article/Conference paper
• Chen, Anyuan; Nilssen, Robert; Nysveen, Arne. (2010) Performance Comparisons Among Radial-Flux, Multistage Axial-Flux, and Three-Phase Transverse-Flux PM Machines for Downhole Applications. IEEE transactions on industry applications
  Academic article

2009

• Ummaneni, Ravindra Babu; Nilssen, Robert; Brennvall, J.E.; Jaillot, Caroline. (2009) Experimental Characterisation of Linear Permanent Magnet Actuator with Gas Springs. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Chen, Anyuan; Nilssen, Robert; Nysveen, Arne. (2009) Performance Comparisons Among Radial Flux, Multi-stage Axial Flux and Three-phase Transverse Flux PM Machines for Downhole Applications. IEEE conference proceedings
  Academic chapter/article/Conference paper

2008

• Ummaneni, Ravindra Babu; Brennvall, J.E.; Nilssen, Robert. (2008) Applications of Linear Permanent Magnet Actuators in Offshore Applications. Recent Advances in Electrical Engineering
  Academic article
• Chen, Anyuan; Ummaneni, Ravindra Babu; Nilssen, Robert; Nysveen, Arne. (2008) Review of Electrical Machine in Downhole Applications and the Advantages. IEEE (Institute of Electrical and Electronics Engineers)
  Academic chapter/article/Conference paper
• Chen, Anyuan; Nilssen, Robert; Nysveen, Arne. (2008) Harmonic Analysis and Comparison of the Back EMFs of Four Permanent Magnet Machine with Different Winding Arrangements.
  Academic chapter/article/Conference paper
• Mogstad, Anne Berit; Molinas Cabrera, Maria Marta ; Olsen, Pål Keim; Nilssen, Robert. (2008) A Power Conversion System for Offshore Wind Parks.
  Academic chapter/article/Conference paper

2007

• Ummaneni, Ravindra Babu; Nilssen, Robert; Brennvall, Jon Eirik. (2007) Force Analysis in Design of High Power Linear Permanent Magnet Actuator with Gas Springs in Drilling Applications. IEEE conference proceedings
  Academic chapter/article/Conference paper

2006

• Krøvel, Øystein; Nilssen, Robert. (2006) Design and Measurements on a Small Radial Flux Permanent Magnet Generator with Concentrated Coils.
  Academic chapter/article/Conference paper

2005

• Nilssen, Robert; Skaar, Stev Erlend; Lund, Richard; Skjellnes, Tore; Øvrebø, Sigurd; Løvli, Edgar. (2005) Design of a Permanent Synchronous Motor Integrated in the Wheel Rim on Wheelchairs.
  Other

2004

• Nysveen, Arne; Undeland, Tore Marvin; Nilssen, Robert; Fosso, Olav B; Hansen, Eilif Hugo; Belsnes, Michael Martin. (2004) Electric energy.
  Academic chapter/article/Conference paper

1998

• Midtgård, Ole-Morten; Nilssen, Robert. (1998) Efficient Spanning Trees for a High-Order Edge Element T-_C Eddy Current Formulation. IEEE transactions on magnetics
  Academic article

1994

• Mohan, Ned; Robbins, William P.; Undeland, Tore Marvin; Nilssen, Robert; Mo, Olve. (1994) Simulation of Power Electronic and Motion Control Systems—An Overview. Proceedings of the IEEE
  Academic article

1993

• Mo, Olve; Nilssen, Robert. (1993) Low cost program for simulation of power electronic converters and systems. IEE Conferance publication
  Academic article

1991

• Mo, Olve; Petterteig, Astrid; Ringheim, Nils Arild; Nilssen, Robert. (1991) Application of programmable modules in simulation of power electronics.
  Academic chapter/article/Conference paper

1990

• Nilssen, Robert; Mo, Olve. (1990) KREAN, a new simulation program for power electronic circuits. PESC Record - IEEE Annual Power Electronics Specialists Conference
  Academic article