Superconducting wind turbine generators

Abrahamsen, Asger Bech; Mijatović, Nenad; Seiler, E; Zirngibl, Thomas; Træholt, Chresten; Nørgård, Per; Pedersen, Niels Falsig; Andersen, N.H.; Ostergard, J.

doi:10.1088/0953-2048/23/3/034019

Cited by 192 publications

(87 citation statements)

References 93 publications

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“…In the case of the SCSG being connected to a frequency converter, which provides a variable stator frequency according to the actual rotor speed, no relative movement between the stator and rotor field exists. The copper stator winding has double-layered and distributed three-phase winding [7][8][9][10].…”

Section: Fig 3 Schematic Diagram Of the Gearless Type Scsgmentioning

confidence: 99%

Optimal Design of a MW Class SCSG for a Tidal Current Power Generation System

Go¹,

Sung²,

Park³

et al. 2015

Journal of Electrical Engineering and Technology

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-A superconducting synchronous generator (SCSG) can be expected to decrease the size and weight compared to conventional tidal current generators. This paper proposes an optimal design of a 2 MW class SCSG for a tidal current power generation system. The proposed optimal design of the SCSG will reduce the length of the high-temperature superconducting wire as well as the weight and volume of the SCSG. The 3D finite element method is used to analyze the magnetic field distribution. The optimized 2 MW SCSG is compared with a 2 MW conventional generator. As the optimized SCSG is more compact and lighter than a conventional generator, it will be efficiently applied to practical tidal power systems.

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Section: Fig 3 Schematic Diagram Of the Gearless Type Scsgmentioning

confidence: 99%

Optimal Design of a MW Class SCSG for a Tidal Current Power Generation System

Go¹,

Sung²,

Park³

et al. 2015

Journal of Electrical Engineering and Technology

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“…B. Abrahamsen et al, 2010). However, the European model is design to work at 20 K, where the current density in the excitation coil can be much larger than that at 65 K. On the other hand, because of the slim rotor and stator, the estimated weight of the 10 MW design here is only about 86 t, which maybe advantageous in practical wind farm applications.…”

Section: Conceptual Designmentioning

confidence: 99%

Superconducting Devices in Wind Farm

Li¹

2011

Wind Energy Management

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“…The offshore wind turbine market is developing much faster than the onshore market, due to high average wind speed, limited onshore installation locations, less interference with habitants, and potentially shorter transmission distance between wind farms (power source) and densely populated cities (consumers) near the coast, resulting in reduced power losses and cost of power transmission, etc. [1] [2]. However, offshore wind turbines also have some disadvantages, such as difficulties of foundation, grid connections and maintenance, etc.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Electromagnetic Performance of 10-MW Superconducting Generators With Different Topologies for Offshore Direct-Drive Wind Turbines

Guan

Zhu

Azar

et al. 2017

IEEE Trans. Appl. Supercond.

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Abstract-This paper compares the electromagnetic performance of 10MW superconducting (SC) generators with three different topologies, i.e., iron-cored stator and rotor (ISIRT), iron-cored stator and air-cored rotor (ISART), and air-cored stator and rotor (ASART). The objective is to provide a powerful insight into the advantages and disadvantages of the different topologies, and to establish some design guidelines for selecting an appropriate direct drive SC generator for offshore wind turbine applications. Firstly, the structures of the three SC generator topologies are introduced. Then, the influence of the SC coil cross sectional area on torque capability is compared. After that, three SC generators with different topologies are optimized respectively for further comparison, including the active material cost, weight, harmonics in the electromotive force (EMF), torque ripple, field harmonics in the SC coil, and forces on the rotor and stator components, etc. It is found that, with the same SC quantity, the torque capability of the iron-cored stator and rotor topology is much better than that of the other two topologies. However, the advantage becomes less significant when a larger area of the SC coil is employed. The air gap flux density waveform of the ASART is much smoother than those of the ISIRT and ISART. The torque ripples of the ISIRT and the ISART are much higher than that of the ASART. The field harmonics (both amplitude and frequency) in the SC coil of the ASART are the lowest. For the ISIRT, most of the force on the rotor is acting on the rotor iron, and thus, the SC coil is more likely to be safe from a mechanical performance point of view and the design of the corresponding supporting structure is simple. However, for the air-cored rotor topologies, nearly all the force is acting on the SC coil. For the air-cored stator, the force mainly acts on the armature winding, while for the iron-cored stator, it is mainly on the stator teeth. Due to the excellent mechanical performance of iron, the iron-cored stator is therefore more robust.

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Superconducting wind turbine generators

Cited by 192 publications

References 93 publications

Optimal Design of a MW Class SCSG for a Tidal Current Power Generation System

Optimal Design of a MW Class SCSG for a Tidal Current Power Generation System

Superconducting Devices in Wind Farm

Comparison of Electromagnetic Performance of 10-MW Superconducting Generators With Different Topologies for Offshore Direct-Drive Wind Turbines

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