CN2245825Y

CN2245825Y - Round ring low, middle and high frequency alternator

Info

Publication number: CN2245825Y
Application number: CN 95209232
Authority: CN
Inventors: 王焕生
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-22
Filing date: 1995-04-22
Publication date: 1997-01-22
Anticipated expiration: 2005-04-22

Abstract

The utility model relates to a permanent magnet generator. The utility model relates to a permanent magnet generator. A plurality of rectangular silicon steel sheets are arranged on a circular stator skeleton, and spiral windings are arranged on the iron cores of the silicon steel sheets to form stator armatures. One end of each of stators is provided with the rectangular silicon steel sheets which are punched with square holes to close two adjacent armature cores, a plurality of permanent magnets having N poles and S poles are arranged on a disk-shaped rotor, a circular disk of the rotor is fixed on a rotating shaft, the end surface of the disk-shaped rotor can rotate to cut alternating current generated by stator windings, the number of the poles of the rotor is increased under a certain rotary speed to generate high-frequency or intermediate-frequency alternating current, and the number of the poles of the rotor is decreased to generate low-frequency alternating current.

Description

The annulus low, middle high frequency alternator

The utility model relates to a kind of permanent magnet generator, and the single-phase or threephase alternator of the different frequency of rectangle armature core especially is installed with the annulus skeleton.

At present, known permanent magnet generator, its structure is that rotor is a column type, and stator is a barrel shape, and rotor rotates in bore of stator, axially " cutting " stator winding generating, this generator stock utilization is lower, and structure is comparatively complicated.

The purpose of this utility model provides a kind of novel electricity generator, and stator is a circular ring type, and rotor is a collar plate shape, rotor is in one sideway swivel of track ring long strip type armature, the generating of end face " cutting " stator winding reaches designs simplification, the purpose that stock utilization is greatly improved.

Owing to adopt such scheme, be convenient to coiling, thermal diffusivity is good, this winding mode can be eliminated the overhang of existing " barrel shape " motor windings back bending place outside iron core, it is little to save the internal resistance of copper conductor motor, and the used silicon steel sheet of this motor is a long strip type, saves 80% than the silicon steel sheet that existing barrel shape is used, owing to rotor is to adopt the high energy product neodymium iron boron not need exciting current to save the energy, this motor can be widely used in the AC power aspect.

The purpose of this utility model is achieved in that with a rotating shaft and connects a rotor rack, the rotor that NS different name permanent magnet pole constitutes it is housed on this rotor rack, a plurality of rectangle silicon steel sheet armature cores are housed stator skeleton and rectangle has the silicon steel sheet of square hole and the stator that spiral winding constitutes it, motor shaft power outside drags down, is fixed on permanent magnet rotation " cutting " stator winding generating of the rotor rack on the axle.

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1 is a fundamental diagram of the present utility model;

Fig. 2 is the stator of this motor;

Fig. 3 is the rotor of this motor;

Fig. 4 is the entire infrastructure figure of this motor.

In accompanying drawing 1, permanent magnet rotor frame 1 is housed, and it is fixed in the rotating shaft 2, when engine drags, spiral winding 4 long strip types on NS magnetic pole 7 " cutting " the stator frame iron core 3 on the rotor rack have the silicon steel sheet 5 of square hole to penetrate two adjacent armature core one ends to make the magnetic line of force constitute the loop, the 6th, the skeleton of fixed armature iron core, because NS magnetic pole " cutting " armature winding on the rotor rack, the armature winding on stator frame can produce the time dependent alternating current of size and Orientation of electric current like this.

Can increase epitrochanterian magnetic pole number when increasing this unit frequency, reduce frequency, otherwise.Increase power and can increase stator frame armature number and rotor rack and magnetic pole number, can increase motor diameter simultaneously and increase power.

In embodiment Fig. 2, it is the stator component part of generator, wherein 6 is disk skeletons that armature core is housed, this skeleton can adopt the nonmetallic materials manufacturing, the rigid plastics high as the heatproof degree, the 3rd, laterally penetrate the rectangle silicon steel sheet of skeleton, the spiral winding of coiling in the direction of the clock at the iron core two ends, this winding is installed on the stator core after can being wound on the insulation framework.The selected of silicon steel sheet core size can be consulted " motor engineering handbook " book four volumes (82 years versions of China Machine Press).Penetrate every two adjacent armature core sealings behind the silicon steel sheet riveted of the available strip of another of this stator for square hole.

In embodiment Fig. 3, it is the rotor part of this generator, wherein adopt a rotor rack 1, this rotor rack can adopt non-magnet material to make a rectangle or trapezoidal and fan-shaped and circular 7 to pack on the rotor rack, rotor rack is on the fixed rotating shaft 2, the permanent magnetism outside should be sealed with the magnetic pole of round iron plate with permanent magnet, can increase the magnetic field intensity of rotor permanent magnet like this.

The utilance of permanent magnetic material is the key of this motor of design, should be according to the size of power and the needs of application conditions, at first select size and the stator gas length of specifically calculating permanent magnetic material under the prerequisite of permanent magnetic material physical property with " Finite Element " for use, can consult " permanent magnetic material and application thereof " book (China Machine Press's version in 1984), the permanent magnet of this motor can adopt the high energy product neodymium iron boron.

In embodiment Fig. 4, it is the overall structure figure according to this motor of above-mentioned three embodiment composition, the main body of (automobile current generator) this machine is to be made of stator frame 6 and rectangle silicon steel sheet core 3 and spiral winding 4, stator frame is mounted in iron-clad 9 inside, by locating sleeve 8 stator skeleton is fixed, the 7th, be fixed on trapezoidal or the fan-shaped and circular NS utmost point different name permanent magnet pole on the rotor rack, the 5th, stator armature iron core one side has the square hole silicon steel sheet to seal with strip, and the 1st, rotor rack.

Monophase machine stator armature number and rotor magnetic pole number equate, three phase electric machine should should adopt two NS utmost points or four magnetic poles to constitute at the stator frame 120 ° of installation armatures of whenever being separated by on the rotor rack.

Can adopt the excitation-type iron core to replace permanent magnet 7 when this generator further is improved to heavy-duty motor, both permanent magnetism removed and change electromagnet into, structure is constant substantially, but must increase collector ring and brush at axle head.

Claims

1, low, middle high frequency alternator, the low, middle high frequency alternator of circular ring type stator particularly, it is characterized in that connecting a rotor rack (1) with a rotating shaft, the rotor that NS different name permanent magnet pole (7) constitutes it is housed on this rotor rack, and a plurality of rectangle silicon steel sheet armature cores (3) are housed stator skeleton (6) and rectangle has the silicon steel sheet (5) of square hole and the stator that spiral winding (4) constitutes it.

2, motor according to claim 1, what it is characterized in that the last installation of rotor rack (1) is that the NS magnetic pole can adopt ladder type or fan type and round.

3, motor according to claim 1 is characterized in that stator armature iron core (3) one ends have square hole silicon steel sheet (5) sealing.

4, motor according to claim 1 is characterized in that the available electromagnet of the permanent magnet of installing on the rotor rack (7) replaces.