Design Optimization of a Permanent-Magnet Flux-Switching Generator for Direct-Drive Wind Turbines

Energies

卷:12

Vladimir Prakht¹  Vadim Kazakbaev¹  Vladimir Dmitrievskii¹ 

[1] Department of Electrical Engineering and Electric Technology Systems, Ural Federal University, 620002 Yekaterinburg, Russia;

关键词: annual energy production;    direct-driven wind generator;    electric machine design;    gearless machines;    flux-switching machine;    machine modelling;    permanent-magnet machines;    special electric machines;    wind generators;   

DOI  :  10.3390/en12193636

来源: DOAJ

【 摘 要 】

Due to the increasing need for direct-drive wind turbines, a large number of papers are dedicated to the optimization of low-speed wind generators. A permanent-magnet flux-switching machine can be a valuable option to use in such applications. This paper describes the optimization procedure of a direct-drive flux-switching wind generator. The average losses, the required converter power, and the cost of permanents magnets were chosen as the optimization objectives. To reduce the calculation efforts during the optimization, a method to construct the substituting load profiles is proposed. Two-mode and three-mode substituting profiles were constructed on the basis of the nine-mode initial profile. The losses calculated under the two-mode, three-mode, and nine-mode profiles accurately coincided, which supported the use of the low-mode substituting profiles instead of the initial one. During the optimization, the average losses decreased by 30%, which corresponded to an increase in the average efficiency by almost 6%. The required converter power was decreased by 10%. The total active material mass, cogging torque, and torque ripple were also slightly decreased.

【 授权许可】

Unknown