Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Bogi Bech Jensen"'
Publikováno v:
Fasil, M, Mijatovic, N, Jensen, B B & Holbøll, J 2017, ' Nonlinear Dynamic Model of PMBLDC Motor Considering Core Losses ', IEEE Transactions on Industrial Electronics, vol. 64, no. 12, pp. 9282-9280 . https://doi.org/10.1109/TIE.2017.2711536
The phase variable model is used commonly when simulating a motor drive system with a three-phase permanent magnet brushless DC (PMBLDC) motor. The phase variable model neglects core losses and this affects its accuracy when modelling fractional-slot
Publikováno v:
Høgberg, S, Holbøll, J, Mijatovic, N, Jensen, B B & Bendixen, F B 2017, ' Direct Reuse of Rare Earth Permanent Magnets—Coating Integrity ', IEEE Transactions on Magnetics, vol. 53, no. 4, 8000609 . https://doi.org/10.1109/TMAG.2016.2636804
Rare earth permanent magnets can be reused directly as an alternative to traditional recycling methods, in which scrapped magnets are reprocessed into new magnets by undergoing many of the original energy-intensive and expensive production processes.
Publikováno v:
Song, X, Mijatovic, N, Zou, S, Jensen, B B & Holbøll, J 2016, ' AC Losses and Their Thermal Effect in High-Temperature Superconducting Machines ', IEEE Transactions on Applied Superconductivity, vol. 26, no. 4, 5900105 . https://doi.org/10.1109/TASC.2016.2529293
In transient operations or fault conditions, high-temperature superconducting (HTS) machines suffer ac losses, which have an influence on the thermal stability of superconducting windings. In this paper, a method to calculate ac losses and their ther
Publikováno v:
Fasil, M, Mijatovic, N, Jensen, B B & Holbøll, J 2016, ' Finite-Element Model-Based Design Synthesis of Axial Flux PMBLDC Motors ', IEEE Transactions on Applied Superconductivity, vol. 26, no. 4, 0602905 . https://doi.org/10.1109/TASC.2016.2537743
This paper discusses the design synthesis of a permanent-magnet brushless dc (PMBLDC) machine using a finite-element (FE) model. This work differentiates itself from the past studies by following a synthesis approach, in which many designs that satis
Autor:
Nenad Mijatovic, Georgios Alexandros Skrimpas, Christian Walsted Sweeney, Joachim Holboell, Bogi Bech Jensen, Karolina Kleani
Publikováno v:
Wind Energy. 19:1819-1832
Ice accretion on wind turbines' blades is one of the main challenges of systems installed in cold climate locations, resulting in power performance deterioration and excessive nacelle oscillation. In this work, consistent detection of icing events is
Publikováno v:
Proceedings of the Nordic Insulation Symposium.
Usage of a lookup table containing the structural mass and air gap deformation for direct-drive wind turbines of various dimensions is demonstrated. The development of the table is described in detail. Optimal generator designs while both neglecting
Autor:
Georgios Alexandros Skrimpas, Kun Saptohartyadi Marhadi, Joachim Holbøll, Bogi Bech Jensen, Nenad Mijatovic, Christian Walsted Sweeney
Publikováno v:
IEEE Transactions on Sustainable Energy. 6:698-706
A power performance assessment technique is developed for the detection of power production discrepancies in wind turbines. The method employs a widely used nonparametric pattern recognition technique, the kernel methods. The evaluation is based on t
Publikováno v:
IEEE Transactions on Applied Superconductivity. 25:1-5
In this paper, two fully superconducting generators employing MgB 2 armature winding, with YBCO and MgB 2 field winding respectively, are presented and analyzed. The ac loss in armature winding is estimated, and a simple comparative study is carried
Publikováno v:
IEEE Transactions on Magnetics. 51:1-6
This paper describes a technique for modeling overlapping laminations in magnetic core materials using two-dimensional finite-element (2-D FE) analysis. The magnetizing characteristic of the overlapping region is captured using a simple 2-D FE model
Publikováno v:
IEEE Transactions on Industry Applications. 51:1782-1791
Several methods of estimating the annual energy losses due to iron losses in wind turbine generators are investigated in this paper. Utilizing a high amount of transient finite-element solutions is first demonstrated. Usage of a space-time transforma