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Rotor design of a 7 MW interior permanent magnet wind generator considering demagnetization

机译：考虑去磁的7 MW内部永磁风力发电机的转子设计

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摘要

Direct-drive permanent magnet (DDPM) generators have been widely adopted in the wind power applications due to the higher reliability, and lower maintenance cost, compared to that of the doubly fed induction generators (DFIG) with the gearbox [1]. However, the magnets are vulnerable to be demagnetized under the short circuit condition. Due to the reliability concerns, the demagnetization performance of DDPM generators is desired and should be analyzed in depth. Taking advantage of the high torque density, high efficiency, and compact structure, interior PM (IPM) generators with fractional slot concentrated windings (FSCWs) could be a promising option for a large-scale wind power generation system [2]. Though paper [3] has investigated the rotor demagnetization performance of IPM machines during the symmetric short circuit, it is only considering machines with distributed windings. In paper [4], demagnetization characteristics of IPM-FSCW machines with different rotor types are analyzed, but not suitable for large-scale generators.
机译：与带齿轮箱的双馈感应发电机（DFIG）相比，直驱永磁（DDPM）发电机具有更高的可靠性和更低的维护成本，已在风电应用中被广泛采用[1]。然而，磁体在短路条件下易于退磁。由于可靠性问题，DDPM发生器的退磁性能是理想的，应进行深入分析。利用高转矩密度，高效率和紧凑的结构，带有分数槽集中绕组（FSCW）的内部PM（IPM）发电机可能是大型风力发电系统的有前途的选择[2]。尽管论文[3]研究了对称短路期间IPM电机的转子退磁性能，但它仅考虑具有分布式绕组的电机。在论文[4]中，分析了具有不同转子类型的IPM-FSCW电机的退磁特性，但不适用于大型发电机。

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  • 来源
    《IEEE Magnetics Conference》|2015年|1-1|共1页
  • 会议地点 Beijing(CN)
  • 作者

    Chen, H.; Qu, R.; Li, J.;

  • 作者单位

    Sch. of Electr. & Electron. Eng. Huazhong Univ. of Sci. & Technol. Wuhan China;

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