Electric machine apparatus
AssigneeJaguar Land Rover Limited
InventorsTiago CESA, Alexandros MICHAELIDES
Life of this patent
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Abstract
The present disclosure relates to a rotor (3) for an electric machine (1). The rotor (3) includes a plurality of magnet poles (5a-f; 5a-h) each comprising one or more permanent magnets (6-n). The magnet poles (5a-f; 5a-h) are angularly separated from each other and an inter-pole region (7a-f; 7a-h) is formed between adjacent magnet poles (5a-f; 5a-h). At least one external flux barrier (12-1, 12-2) is disposed in each said inter-pole region (7a-f; 7a-h), the at least one external flux barrier (12-1, 12-2) comprising an external aperture. The present disclosure also relates to an electric machine (1) including a rotor (3); and to a vehicle (2) including an electric machine (1).
Claims21
A rotor for an electric machine, the rotor comprising:
- a plurality of magnet poles each comprising a plurality of permanent magnets, the magnet poles being angularly separated from each other and an inter-pole region being formed between adjacent magnet poles;
- the permanent magnets being arranged in at least first and second layers in each magnet pole, the first and second layers being radially offset from each other and the first layer being disposed in a radially outer position;
- wherein first and second external flux barriers are disposed in each said inter-pole region, the first and second at least one external flux barriers each comprising an external aperture, the first and second external flux barriers being associated with the permanent magnets in the second layer.
(canceled)
18-23. (canceled)
Dependencies are inferred from the claim text.