Blar i NTNU Open på forfatter "Zhang, Zhaoqiang"
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Design optimization of ironless multi-stage axial-flux permanent magnet generators for offshore wind turbines
Zhang, Zhaoqiang; Nilssen, Robert; Muyeen, S.M.; Nysveen, Arne; Al-Durra, Ahmed (Journal article; Peer reviewed, 2017)Direct-driven ironless-stator machines have been reported to have low requirements on the strength of the supporting structures. This feature is attractive for offshore wind turbines, where lightweight generators are ... -
End-region losses in large hydropower generators
Fagermyr, Børge Johannes (Master thesis, 2022)Store generatorer kan oppleve delvis eller fullstendig oppheting i generatorens endeområde under visse forhold. Lekkfluks i generatorens endeområde kan inneha en betydelig aksiell komponent som trenger gjennom endedelen ... -
Multiphysics 3D Modelling of Ironless Permanent Magnet Generators
Zhang, Zhaoqiang; Muyeen, S.M.; Al-Durra, Abel A.; Nilssen, Robert; Nysveen, Arne (Journal article; Peer reviewed, 2014)Abstract Analytical method is widely used for the preliminary design and optimization of electrical machines. It has short calculation time and low computational cost (cost of simulation codes and supporting hardware), but ... -
Segmentation Effects in the Modular HVDC Offshore Wind Generator and its Impact on Losses
Karekezi, Yannick Cyiza; Zhang, Zhaoqiang; Olsen, Pål Keim (Chapter, 2023)Worldwide wind power capacity jumped from 7.5 GW in 1997 to 564GW by 2018, according to IRENA. Many regions of the world have strong wind speeds, but the best locations for generating wind power are often remote, where ...