摘要:
An alternator includes a stator having an annular stator core provided with a number of slots extending axially disposed in lines circumferentially so as to open on an inner circumferential side and a stator coil wound into the stator core so as to be installed in the slots, a rotor having a number of claw-shaped magnetic poles for alternately forming north-seeking (N) and south-seeking (S) poles about a rotational circumference, the rotor being rotatably disposed on the inner circumferential side of the stator core, a bracket supporting the rotor and the stator, and a rectifier disposed at a first axial end of the stator and connected to end portions of the stator coil, the rectifier converting alternating current from the stator coil into direct current, wherein a number of slots is two per phase per pole, and the stator coil comprises a number of winding sub-portions in each of which a long strand of wire is wound so as to alternately occupy an inner layer and an outer layer in a slot depth direction within the slots at intervals of a predetermined number of slots by folding back the strand of wire outside the slots at axial end surfaces of the stator core.
摘要:
The generator comprises a stator core 4 in which a three-phase stator coil 5 is wound and inserted into slots, a first rotor core 8 and a second rotor core 9 which are provided in the side of an inner diameter of this stator core 4 and rotate with a rotating shaft 7, a field coil 10 for magnetizing these first and second rotor cores 8 and 9 in different magnetic poles, and a plurality of magnetic poles 23 and 24 which are provided so as to extend to an axial direction of the rotating shaft 7 from the first and second rotor cores 8 and 9 and are arranged so as to have engagement alternately through predetermined gaps 25 and 26 between the magnetic poles and are opposite to the surface of the inner diameter of the stator core 4, and it is configured so that these magnetic poles 23 and 24 have a plurality of parts 23a, 24a and 23b, 24b in the axial direction and are stepwise formed and the respective parts are set to different widths in a rotational direction.
摘要:
The generator comprises a stator core 4 in which a three-phase stator coil 5 is wound and inserted into slots, a first rotor core 8 and a second rotor core 9 which are provided in the side of an inner diameter of this stator core 4 and rotate with a rotating shaft 7, a field coil 10 for magnetizing these first and second rotor cores 8 and 9 in different magnetic poles, and a plurality of magnetic poles 23 and 24 which are provided so as to extend to an axial direction of the rotating shaft 7 from the first and second rotor cores 8 and 9 and are arranged so as to have engagement alternately through predetermined gaps 25 and 26 between the magnetic poles and are opposite to the surface of the inner diameter of the stator core 4, and it is configured so that these magnetic poles 23 and 24 have a plurality of parts 23a, 24a and 23b, 24b in the axial direction and are stepwise formed and the respective parts are set to different widths in a rotational direction.
摘要:
The invention provides a rotor for a dynamo-electric machine which is capable of reducing deformation of magnetic poles due to centrifugal force or noise generated by vibrations without deteriorating characteristics of the dynamo-electric machine. The rotor includes a plurality of deformation preventing members. Each of the deformation preventing members is attache on each magnetic. Each of the deformation preventing members has elongated portion pressed to aginst to the side wall of the magnetic poles. A first deformation preventing members attached on the first magnetic poles and a second deformation preventing members attached on the second magnetic poles also are used. The first and second deformation preventing menber are holded to one another.
摘要:
In an electric rotating machine, a rotor can be manufactured relatively easily at reasonable cost without high working accuracy for pole cores, and a permanent magnet can be assembled without impairing cooling efficiency of the rotor. A magnet-holding member 7 is separately fixed to a claw-shaped magnetic pole 21 of at least one of a pair of pole cores 2, 3; each magnet-holding member 7 is provided with a magnet mounting part 72 on which a permanent magnet 5 is mounted on two sides of the claw-shaped magnetic pole 21 in circumferential direction; and each magnet mounting part 72 is formed so as to be located between the claw-shaped magnetic poles 21, 31 engaged with each other.
摘要:
A welding set and a welding method that suppresses the unnecessary magnetization of a permanent magnet member by a welding current when welding one metal member including a permanent magnet member and the other metal member together are obtained. The welding set is provided with a work retaining part 3 that retains a work 14; a pressure device 4 located over the work retaining part 3 with a work-providing space interposed; a first welding electrode 8 mounted on a moving part 4a of the pressure device 4; a second welding electrode 10; and a welding transformer 11 that supplies a welding current to both of the welding electrodes 8, 10. Both of the welding electrodes 8, 10 are located on one end side of the work 14 with respect to one metal member and the other metal member respectively, as well as are located so that there is no permanent magnet member 18 between respective abutment terminal of one metal member and the other metal member.
摘要:
Pole core members of a rotor are fitted on a rotary shaft with claw-shaped magnetic poles engaged with one another from front and rear sides. Each of magnet mounting members for holding magnets against side surfaces of each magnetic pole has magnet retaining portions on both sides and a platelike middle portion. Located between two adjacent claw-shaped magnetic poles, each magnet produces a magnetic field oriented in a direction opposite to the direction of a magnetic flux formed between the adjacent claw-shaped magnetic poles. The claw-shaped magnetic pole has a stopper portion protruding inward from an extreme end of the magnetic pole on an inclined inside surface thereof. The magnet mounting member carrying the magnets in the magnet retaining portions is affixed to each claw-shaped magnetic pole with the middle portion of the magnet mounting member fitted in a recess formed in the inclined inside surface of the magnetic pole.
摘要:
A rotor of a dynamo-electric machine according to the present invention including a pole core provided so as to cover a rotor coil generating a magnetic flux and being made up of a first pole core body and a second pole core body having respectively tooth-shaped magnetic poles projecting so as to mesh alternately with each other, includes magnet ASSYs as the magnetic element having magnets disposed on the both side surfaces of the tooth-shaped magnetic poles for reducing magnetic flux leakage from between the side surfaces of the adjacent tooth-shaped magnetic poles, and magnet retaining members for supporting the magnets on the tooth-shaped magnetic poles, and resin members filled between the magnet ASSYs at the position between the opposing surfaces thereof.
摘要:
A projected shape of permanent magnets is contained within a plane of projection formed by adjacent claw-shaped magnetic poles overlapping when the claw-shaped magnetic poles are viewed in a direction of rotation of a rotor, and is generally similar in shape to a shape of the plane of projection.
摘要:
A vehicular generator-motor control apparatus wherein a winding field type salient-pole generator-motor 1 (in FIG. 1) for a vehicle is subjected to a conduction control by a DC-AC converter 2, characterized in that a stator 1A of the vehicular winding field type salient-pole generator-motor 1 is energized by rectangular wave voltages at those conduction start angles δ of respective phases of the stator 1A which are shifted a predetermined angle relative to a rotor position, and that the conduction start angles δ of the respective phases change substantially continuously in accordance with an input voltage of the DC-AC converter 2 and a revolution speed of the generator-motor 2.