Design Considerations of a Transverse Flux Machine for Direct-Drive Wind Turbine Applications [electronic resource] : Preprint

• Ngôn ngữ: eng
• Ký hiệu phân loại: 621.824 Springs
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2017
• Mô tả vật lý: Size: 852 KB : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 258324
• Chủ đề: 1. 17 wind energy; 2. Design consideration; 3. Permanent magnet machine; 4. Pole number selection; 5. Transverse flux machine

Tóm tắt

This paper presents the design considerations of a double-sided transverse flux machine (TFM) for direct-drive wind turbine applications. The TFM has a modular structure with quasi-U stator cores and ring windings. The rotor is constructed with ferrite magnets in a flux-concentrating arrangement to achieve high air gap flux density. The design considerations for this TFM with respect to initial sizing, pole number selection, key design ratios, and pole shaping are presented in this paper. Pole number selection is critical in the design process of a TFM because it affects both the torque density and power factor under fixed magnetic and changing electrical loading. Several key design ratios are introduced to facilitate the design procedure. The effect of pole shaping on back-emf and inductance is also analyzed. These investigations provide guidance toward the required design of a TFM for direct-drive applications. The analyses are carried out using analytical and three-dimensional finite element analysis. A prototype is under construction for experimental verification.