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US 2018/0294705 A1Published application
Linear flux switching permanent magnet motor
AssigneeKone Corporation
InventorsTero HAKALA, Tuukka KORHONEN, Tero PUROSTO, Ilya PETROV, Juha PYRHÖNEN
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Abstract
A linear flux switching permanent magnet (FSPM) motor includes a longitudinal linear stator with stator teeth facing an air gap and a mover including at least one armature including armature teeth, which are spaced apart by slots for receiving an armature winding. At least some, preferably all of the armature teeth embed at least two permanent magnets, respectively, which are positioned successively in longitudinal direction of the tooth, whereby the two permanent magnets have different magnetic properties.
Claims20
A linear flux switching permanent magnet (FSPM) motor comprising:
- a longitudinal linear stator with stator teeth facing an air gap;
- and a mover comprising at least one armature comprising armature teeth, which are spaced apart by slots for receiving an armature winding,
- wherein at least some of the armature teeth embed at least two permanent magnets, respectively, which are positioned successively in a longitudinal direction of the tooth, whereby the two permanent magnets have different magnetic properties,
- wherein a first permanent magnet is located in the area towards the tooth tip whereas a second permanent magnet is located along the major part of the tooth length below the first permanent magnet and and
- wherein the first permanent magnet has a higher remanence than the second permanent magnet.
2 more elements
Dependencies are inferred from the claim text.