Rotating-electric machine
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsKoichiro Kamei, Takehiro Kobayashi
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Abstract
A rotating-electric machine for use in engine starter capable of improving power by reducing inductance of coil is provided. An armature 7 is provided inside a stator, and when an armature winding 2 is inserted into a slot 4 provided in the armature 7, the armature winding 2 is formed into a wave winding and a short-pitch winding. In case that number of poles 2p=6 and number of slots Ns=23, the armature winding 2 are inserted into 1st to 4th slots, and a back pitch yb is established to be 3, whereby a short-pitch degree δ(=|Ns/2p−yb|) is 0.83 and an expression of 0.5<δ<1 is satisfied.
Claims3
A rotating-electric machine comprising:
- an armature provided inside a stator, and an armature winding inserted into a slot provided in said armature,
- wherein said armature winding is formed into a wave winding and a short-pitch winding, and when putting short-pitch degree as δ, an expression of 0.5<δ<1 is satisfied.
A rotating-electric machine comprising:
- a stator composed of a permanent magnet, an armature provided inside said stator, and an armature winding inserted into a slot provided in said armature,
- wherein said armature winding is formed into a wave winding and a short-pitch winding, and when putting short-pitch degree as δ, an expression of 0.5<δ<1 is satisfied.
Dependencies are inferred from the claim text.