Search Results - "Nysveen, Arne"

Static and dynamic eccentricity fault diagnosis of large salient pole synchronous generators by means of external magnetic field by Ehya, Hossein, Nysveen, Arne, Nilssen, Robert, Liu, Yujing

“…Although synchronous generators are robust and long‐lasting equipment of power plants, consistent electricity production depends on their health conditions…”
Get full text

Common and differential mode of dc-bias in three-phase power transformers by Wang, Wei, Nysveen, Arne, Magnusson, Niklas

“…Dc magnetization due to the geomagnetically induced currents (GICs) and HVDC (High Voltage Direct Current) systems may cause core saturation and result in…”
Get full text

Power losses in the three‐phase three‐limb transformer due to common and differential mode of dc‐bias by Wang, Wei, Nysveen, Arne, Magnusson, Niklas

“…Geomagnetically induced currents (GICs) and the converter modulation effect are the two main causes for dc magnetisation in power transformers. It is well…”
Get full text

An Investigation of Zeroth-Order Radial Magnetic Forces in Low-Speed Surface-Mounted Permanent Magnet Machines by Valavi, Mostafa, Le Besnerais, Jean, Nysveen, Arne

“…Zeroth mode of vibration is investigated in low-speed high-torque surface-mounted permanent magnet (PM) machines with non-overlapping concentrated windings…”
Get full text

Influence of Pole and Slot Combinations on Magnetic Forces and Vibration in Low-Speed PM Wind Generators by Valavi, Mostafa, Nysveen, Arne, Nilssen, Robert, Lorenz, Robert D., Rolvag, Terje

“…In this paper, radial forces and torque ripple characteristics are investigated in permanent magnet (PM) machines having different pole and slot combinations…”
Get full text

Fabrication of a Scaled MgB2 Racetrack Demonstrator Pole for a 10-MW Direct-Drive Wind Turbine Generator by Magnusson, Niklas, Eliassen, Jan Christian, Abrahamsen, Asger Bech, Helleso, Svein Magne, Runde, Magne, Nysveen, Arne, Moslatt, Lars-Erik, Bjerkli, Jarle, King, Patrick

“…Field windings made of MgB 2 wires or tapes are considered for their potential to reduce volume, weight, and cost of large offshore wind turbine generators. To…”
Get full text

Pattern Recognition of Interturn Short Circuit Fault in a Synchronous Generator Using Magnetic Flux by Ehya, Hossein, Nysveen, Arne

“…This article provides a novel approach for discriminating the interturn short circuit (ITSC) fault in a salient pole synchronous generator (SPSG) based on the…”
Get full text

Comprehensive Broken Damper Bar Fault Detection of Synchronous Generators by Ehya, Hossein, Nysveen, Arne

“…Reliable operation of synchronous generators in hydroelectric power plants is crucial for avoiding unplanned stoppages that can incur substantial costs. The…”
Get full text

Intelligent Data-Driven Diagnosis of Incipient Interturn Short Circuit Fault in Field Winding of Salient Pole Synchronous Generators by Ehya, Hossein, Skreien, Tarjei N., Nysveen, Arne

“…This article examines if machine learning (ML) and signal processing can be used for online condition monitoring to reveal interturn short circuit (ITSC) fault…”
Get full text

Eddy Current Loss in Grain-Oriented Steel Laminations Due to Normal Leakage Flux by Wang, Wei, Nysveen, Arne, Magnusson, Niklas

“…Leakage flux penetrating laminated iron cores in power transformers and large generators induces eddy current and local loss. Due to the strong magnetic…”
Get full text

The influence of multidirectional leakage flux on transformer core losses by Wang, Wei, Nysveen, Arne, Magnusson, Niklas

“…•Inductive loading increases overall core loss due to transverse leakage flux.•Inductive loading enhances local eddy loss in the core due to normal leakage…”
Get full text

Performance Evaluation of Signal Processing Tools Used for Fault Detection of Hydrogenerators Operating in Noisy Environments by Ehya, Hossein, Nysveen, Arne, Skreien, Tarjei N.

“…Signal processing plays a crucial role in addressing failures in electrical machines. Experimental data are never perfect due to the intrusion of undesirable…”
Get full text

Control Methods for Operation of Pumped Storage Plants With Full-Size Back-to-Back Converter Fed Synchronous Machines by Tiwari, Raghbendra, Nilsen, Roy, Mo, Olve, Nysveen, Arne

“…A full-size converter-fed synchronous machine (CFSM) technology is emerging as the most flexible system for pumped storage plants for efficient operation in a…”
Get full text

Advanced Fault Detection of Synchronous Generators Using Stray Magnetic Field by Ehya, Hossein, Nysveen, Arne, Antonino-Daviu, Jose A.

“…Many methods used for precise fault detection in salient pole synchronous generators (SPSGs) often require a priori knowledge of the healthy case, but this…”
Get full text

Effects of Loading and Slot Harmonic on Radial Magnetic Forces in Low-Speed Permanent Magnet Machine With Concentrated Windings by Valavi, Mostafa, Nysveen, Arne, Nilssen, Robert

“…This paper investigates the effects of loading and slot harmonic on radial magnetic forces in a low-speed permanent magnet (PM) machine with non-overlapping…”
Get full text

An Expeditious Algorithm for Identification and Classification of Rotor Faults in Salient Pole Synchronous Generators by Ehya, Hossein, Nysveen, Arne, Akin, Bilal, Gyftakis, Konstantinos N.

“…Providing secure electricity depends on the reliable operation of the synchronous generators in power plants. Inter-turn short circuit (ITSC) and dynamic…”
Get full text

Electromagnetic Analysis and Electrical Signature-Based Detection of Rotor Inter-Turn Faults in Salient-Pole Synchronous Machine by Valavi, Mostafa, Jorstad, Kari Gjerde, Nysveen, Arne

“…In this paper, rotor inter-turn faults in salient-pole synchronous machines are investigated using finite-element analysis. The machine under study is a 22 MVA…”
Get full text

Virtual-Stator Loss Model for Synchronous Generators With Fractional-Slot Winding by Zhang, Zhaoqiang, Nysveen, Arne, Fagermyr, Borge Johannes, Nilssen, Robert, Ehya, Hossein, Belkhode, Satish

“…In synchronous generators, the end-region field can cause additional losses at clamping structures and stator end core. It can be a computational challenge to…”
Get full text

Computation of Core Losses in Electrical Steel Laminations with Impacts of Normal Flux and PWM Switching Considered by Zhang, Zhaoqiang, Ceballos, Julen Iradi, Nysveen, Arne, Haugan, Thomas S.

“…Normal flux (perpendicular to the lamination plane) and pulse width modulation (PWM) can have significant impacts on the losses of steel laminations, e.g. in…”
Get full text

Slot Harmonic Effect on Magnetic Forces and Vibration in Low-Speed Permanent-Magnet Machine With Concentrated Windings by Valavi, Mostafa, Nysveen, Arne, Nilssen, Robert, Rolvag, Terje

“…In this paper, the influence of slot harmonics on magnetic forces and vibration is studied in a 120-slot/116-pole low-speed PM machine at no-load. It is shown…”
Get full text