Study of 10 MW-Class Wind Turbine Synchronous Generators With HTS Field Windings

Fukui, Satoshi; Ogawa, J.; Sato, Takumi; Tsukamoto, O.; Kashima, N.; Nagàya, Shigeo

doi:10.1109/tasc.2010.2090115

Cited by 98 publications

(24 citation statements)

References 4 publications

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“…The ASART is a good candidate for large-power offshore wind turbines due to its light weight, because a light non-magnetic material is used as the stator teeth and rotor poles instead of iron. A lot of research has been focused on this topology [11]- [14]. Compared with the ASART, iron is still used for the stator teeth of the ISART [15]- [16].…”

Section: Comparison Of Electromagnetic Performance Of 10mw Supercondumentioning

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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Section: Comparison Of Electromagnetic Performance Of 10mw Supercondumentioning

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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“…The HTS technology can considerably reduce the volume and weight of large generators which is achieved by eliminating the magnetic steel core of the stator and rotor of the generator [6], [22]. The HTS coils can carry DC current with very small resistances whereas in AC current considerable electrical losses may be occurred [6], [11].…”

Section: A Designmentioning

confidence: 99%

Loss optimization of a 10 MW class HTS synchronous generator based wind turbines

Shafaie

Kalantar

2014

2014 14th International Conference on Environment and Electrical Engineering

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In this paper, the performance analysis of a 10 MW class high temperature superconducting (HTS) synchronous generator for wind turbines applications is discussed. The proposed generator using HTS excitation field winding is modeled and simulated under full load condition. Also, the losses of the generator especially iron losses and copper losses using analytical and finite element method (FEM) calculations are evaluated. Also, the stator back yoke height according to optimum value of the generator losses and weight through sensitivity analysis are optimized. Consequently, the electrical efficiency of the wind turbine generator is calculated and the superiority of the proposed 10 MW class HTS generator will be concluded.

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“…Recent trends in wind turbine have shifted toward bigger capacity to reduce the cost of energy [4], [6], [7]. High temperature superconducting (HTS) technology in wind turbine enables generators with one third the weight and one half the losses of conventional copper and permanent magnet based generators.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a 10-kW Superconducting Synchronous Generator

Kim

Park

et al. 2015

IEEE Trans. Appl. Supercond.

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POSCO and the Research Institute of Industrial Science and Technology developed a 10-kW superconducting synchronous generator using high-temperature superconducting wire. The generator consists of four-pole racetrack-type superconducting coils using GdBCO wire for rotor and 24 slots copper windings for stator. The rated power of the generator was 10 kW at 600 r/min, and the operating temperature was 30 K by thermosyphon cooling method using liquid neon. The output power was measured when the generator was connected to a vector motor, and the detailed results were discussed in this paper.

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Study of 10 MW-Class Wind Turbine Synchronous Generators With HTS Field Windings

Cited by 98 publications

References 4 publications

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

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

Loss optimization of a 10 MW class HTS synchronous generator based wind turbines

Performance Analysis of a 10-kW Superconducting Synchronous Generator

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