Alternator for vehicles
AssigneeDenso Corporation
InventorsNobuo Isogai, Shigenobu Nakamura
Life of this patent
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Abstract
A stator winding of an alternator has two poly-phase windings. Each of phase coils, e.g., X-phase coil in one of poly-phase windings, is provided by a continuous wire. The phase coil is accommodated in corresponding slots in a layered manner along a radial direction, therefore, the phase coil forms layers in the slots and may be identified as location of layers in the slots. The phase coil has a plurality of crossing portion that links the layers in different slots distanced by a magnetic pole pitch, and two output portions extending beyond the stator winding. In the phase coil, only one crossing portion is formed to link the same layers in different slots, and the other crossing portions are formed to link different layers in different slots.
Claims10
An alternator for vehicles comprising:
- a rotor that has a plurality of claw-shaped magnetic poles;
- and
- a stator including a stator core having a plurality of slots, and a stator winding accommodated in the slots to form a plurality of layers in one slot, wherein the stator winding comprises a poly-phase winding including a plurality of phase coils,
- the phase coils are made of continuous wires, and
- each of the phase coils has a plurality of crossing portions that provides coil ends on both ends of the stator core and link the layers in different slots distanced by a magnetic pole pitch of the rotor in series with each other, the crossing portions including a single same layer crossing portion that links the same layers in different slots, and other crossing portions that link different layers in different slots.
Dependencies are inferred from the claim text.