Design of a 10-MW-Class Wind Turbine HTS Synchronous Generator With Optimized Field Winding

Shafaie, Rouhollah; Kalantar, Mohsen

doi:10.1109/tasc.2013.2256421

Cited by 53 publications

(14 citation statements)

References 26 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 range of this study covers the harmonic performance analysis of the proof of concept 10 kW HTS synchronous generator. The harmonic performance of a synchronous generator depends primarily on the rotor and stator construction [28,29].…”

Section: Performance Analysismentioning

confidence: 99%

Design Improvisation for Reduced Harmonic Distortion in a Flux Pump-Integrated HTS Generator

et al. 2017

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This paper presents a design improvisation of a flux pump-integrated 10 kW high-temperature superconducting (HTS) proof of concept generator for reduced harmonic distortion. To carry out the design improvisation, a finite element analysis (FEA) model of the 10 kW HTS generator is developed, and time-stepped magnetic transient simulations are conducted on the 2D model. The effects of stator yoke material, winding pitch factors, and load configurations on total harmonic distortion (THD) are investigated. The results showed that fibre-reinforced polymer (FRP) epoxy (G10) can be used as the stator yoke material to effectively avoid the hysteresis and eddy current losses. In addition, the study results show that for the non-conventional design of the machine, a winding pitch of 2/3 and the armature-load configuration of Star-Delta gives THD values within the standard limit defined by IEEE Standard 519-2014. The THD values indicate that the machine design configuration is suitable for the development of machines for both stand-alone and grid-connected operations, according to IEEE STD 519-2014.

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“…3D electromagnetic design and electrical characteristics analysis of a 10-MW-class high-temperature superconducting synchronous generator for wind power Because the harmonic components included in electrical output power causes increasing noise, vibration and electrical losses of the generator and cost of the Power Conversion System (PCS), harmonics contents of electrical output power such as output voltage and load current must be considered in the design step [5]. Total Harmonic Distortion (THD) is defined as the ratio of sum of RMS values of the harmonic components to RMS value of fundamental component and used to calculate the harmonics contents.…”

Section: Electrical Characteristics Analysis Of a 10-mw-class Hts Synmentioning

confidence: 99%

3D electromagnetic design and electrical characteristics analysis of a 10-MW-class high-temperature superconducting synchronous generator for wind power

Kim¹,

Park²,

Le³

et al. 2014

Progress in Superconductivity and Cryogenics

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In this paper, the general electromagnetic design process of a 10-MW-class high-temperature superconducting (HTS) synchronous generator that is intended to be utilized for large scale offshore wind generator is discussed. This paper presents three-dimensional (3D) electromagnetic design proposal and electrical characteristic analysis results of a 10-MW-class HTS synchronous generator for wind power. For more detailed design by reducing the errors of a two-dimensional (2D) design owing to leakage flux in air-gap, we redesign and analyze the 2D conceptual electromagnetic design model of the HTS synchronous generator using 3D finite element analysis (FEA) software. Then electrical characteristics which include the no-load and full-load voltage of generator, harmonic contents of these two load conditions, voltage regulation and losses of generator are analyzed by commercial 3D FEA software.

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Design of a 10-MW-Class Wind Turbine HTS Synchronous Generator With Optimized Field Winding

Cited by 53 publications

References 26 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

Design Improvisation for Reduced Harmonic Distortion in a Flux Pump-Integrated HTS Generator

3D electromagnetic design and electrical characteristics analysis of a 10-MW-class high-temperature superconducting synchronous generator for wind power

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