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US 5,994,802 AGranted
AC generator for vehicle
AssigneeDenso Corporation
InventorsAkiya Shichijyo, Shin Kusase
Life of this patent
Estimating the term…
Abstract
A stator winding is composed of a first and second of three-phase windings. Each of them has three separate Y-connected or .DELTA.-connected coils which are wound on the teeth of the stator core at a 2 .pi./3 short pitch. The second three-phase winding is shifted from the first winding by .pi./3 radian in the electric angle which is one tooth pitch.
Claims4
An AC generator for a vehicle comprising:
- a rotor having a core with a plurality of claw pole pieces disposed on an outer periphery thereof at a pitch,
- a stator disposed around said rotor and having a stator core with a plurality of slots in an inner periphery thereof and a stator winding disposed in said slots and wound in said stator core;
- and
- a permanent magnet, disposed between an adjacent two of said claw pole pieces in the rotating direction and magnetized in a polarity to reduce leakage flux between said claw pole pieces;
- wherein
- said stator winding comprises a plurality of three-phase windings,
- each of said three-phase windings is disposed in said slots at a certain phase angle, and
- said stator winding comprises a first three-phase winding having a plurality of first short-pitch-lap-wound coils and a second three-phase winding having a plurality of second short-pitch-lap-wound coils respectively shifted from said first short-pitch coils by .pi./3 radian in the electric angle.
5 more elements
An AC generator for a vehicle comprising:
- a rotor having a core with a plurality of claw pole pieces disposed on an outer periphery thereof;
- a stator disposed around said rotor and having a stator core with a plurality of slots in an inner periphery thereof and a stator winding disposed in said slots and wound in said stator core;
- and
- a permanent magnet, fixed to at least one of said claw pole pieces and magnetized in a polarity to reduce leakage flux between said claw pole pieces;
- wherein
- said stator winding comprises a first three-phase winding having a plurality of first short-pitch-lap-wound coils and a second three-phase winding having a plurality of second short-pitch-lap-wound coils respectively shifted from said first short-pitch-lap-wound-coils by an electric angle that is one of .pi./6 radian and a multiple of .pi./6 radian.
3 more elements
Dependencies are inferred from the claim text.