Back-iron Consideration in High-Speed Axial-Flux Machine
High-Speed Axial Flux Generator (HSAFG) has come into attention because of its some advantages such as high power density and efficiency. This paper presents a modeling and designing procedure of HSAFG with some details. The optimized thickness of the backiron used in the rotor of two ends is determined for a HSAFG by carefully considerations of the terminal voltage, output power and efficiency. It is illustrated that a very small thickness of the rotor yoke reduces the terminal voltage and efficiency and a very large value of it increases the rotor inertia, mechanical problems and cost of the machine with no significant improvement of the machine performance characteristics. Ill. 9, bibl. 19 (in English; summaries in English, Russian and Lithuanian).
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