The present paper describes the original solutions adopted for a multi-stack axial-flux permanent magnet machine prototype (AFPMs) devoted to direct-drive railway applications. For design and construction of the prototype a 4-stack AFPM structure is adopted in order to overcome the design restriction on the machine diameter and meet the required torque rating, whereas very efficient cooling arrangement of the machine stator is accomplished by means of a water-cooled toroidal plate being sandwiched between the two halves composing the stator core of each machine stage. Significant aspects of the railway traction motor prototype design have been discussed and experimental results taken from a machine prototype have been reported. The novel arrangement proposed for AFPMs allows machine characteristics such as very high compactness, lightness, efficiency and long-term overload capability, which are required for the direct-drive applications.
Multi-stage axial-flux PM machine for direct-drive railway traction applications
2005
5 Seiten, 1 Tabelle, 8 Quellen
Conference paper
English
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