CN1043829C

CN1043829C - Slip-ring converting reluctance motor

Info

Publication number: CN1043829C
Application number: CN97109825A
Authority: CN
Inventors: 吴建华; 陈永校
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 1997-04-25
Filing date: 1997-04-25
Publication date: 1999-06-23
Anticipated expiration: 2017-04-25
Also published as: CN1168020A

Abstract

The present invention relates to a motor, which is characterized in that a stator and a rotor are both salient pole structures; a gear-shaped electric conduction inversion slide ring is coaxially rotated with a rotor core without windings, and is in slide contact with a plurality of positive and negative electrical brushes which are arranged on one end cover. The salient poles of a stator core are respectively sheathed with a concentration coil; each two salient pole coils form a phase winding; each phase winding is connected with a power supply by the positive and negative electrical brushes and the inversion slide ring; electromagnetic torque generating magnetic resistant performance drives the rotor to rotate; the rotor following each phase winding connected with the supply power in order operates constantly. The present invention has the advantages of simple structure, safe operation, material saving, low cost, and convenient manufacture and use, which is especially suitable for automobiles, motorcycles and electric tools.

Description

Slip-ring converting reluctance motor

The present invention relates to a kind of motor, be specially adapted to automobile, motorcycle starting and electric tool.

Be widely used in the D.C. series motor of automobile, motorcycle, electric tool, rotor has distributed winding and commutator, and the structure of motor, manufacturing process complexity, consumption copper is many, cost is high.And be used for the switched reluctance machines of power variable speed drives, and stator and rotor are salient-pole structure, and rotor does not have winding, and is simple in structure firm, uses as speed-adjusting driving system, needs configuration one cover electronic-controlled installation control the motor stator winding change of current.

In view of above-mentioned, the objective of the invention is DC series motor and reluctance motor are organically combined, a kind of simple in structure, manufacturing, easy to use is proposed, material is economized, cost is low, slip-ring converting reluctance motor safe and reliable to operation is as uses such as motor new varieties steam supply car, motorcycle, electric tools.

Technical solution of the present invention is; The stator and rotor iron core of motor is the salient pole type structure, one gear-like conduction change of current slip ring and the coaxial rotation of rotor core, and with the some positive and negative brush sliding contact that is fixed on the end cap, in rotor core, there is not winding, on the salient pole of stator core, be nested with concentrating coil respectively, coil on per two salient poles constitutes a phase winding, every phase winding links to each other with power supply with change of current slip ring through positive and negative brush, when the tooth of change of current slip ring touches mutually with certain mutually positive and negative brush, this phase winding energized then, produce the electromagnetic torque of magnetic resistance character, drive the rotor rotation.

Description of drawings:

Fig. 1 is the axial cutaway view of motor of the present invention;

Fig. 2 is the transverse sectional view of motor of the present invention;

Fig. 3 is a kind of wiring example of motor windings;

Fig. 4 is the another kind of wiring example of motor windings;

Fig. 5 is the machine operation schematic diagram.

With reference to Fig. 1, Fig. 2, at motor case 1 internal fixation stator salient poles 2, be equipped with concentrating coil 3 on the stator salient poles, salient pole rotor unshakable in one's determination 4 is coaxial with gear-like conduction change of current slip ring 5, change of current slip ring 5 and device several positive and negative brush 6,6 ＇ sliding contacts on end cap 8.Usually, the number of teeth of change of current slip ring is equated with the rotor with salient pole number.Be the coefficient of friction of balanced brush and change of current slip ring,, be filled with insulating material 7 between change of current slip ring 5 and equalization block 5 ＇, and make it have smooth circumferential surface at the tooth of change of current slip ring 5 and equalization block 5 ＇ of between cog setting and change of current slip ring 5 same materials.Fig. 3 is a kind of wiring example of motor windings, the diagram motor stator is 8 utmost points, rotor is 6 utmost points, in the diagram instantiation, adopt the coil on relative two salient poles of stator to constitute a phase winding, then motor has A, B, C, D4 phase, this example is with after constituting two coil series connection of phase winding, one termination positive supply, another termination brush 6, this brush is communicated with through the brush 6 ' that change of current slip ring 5 and another connect negative supply.When the tooth of change of current slip ring touches mutually with certain mutually positive and negative brush, this phase winding energized then.Perhaps also can make two coils on the relative salient pole of stator, a termination power of each coil, another termination brush touches mutually by change of current slip ring and brush and to make the winding energized.Stator winding can be that the coil on relative two salient poles constitutes a phase winding, also can be that the coil on adjacent two salient poles constitutes a phase winding.

For reducing the brush number, also can take each phase winding respectively to connect a positive brush, connect a negative brush altogether, referring to Fig. 4, at this moment, change of current slip ring made axially have annular ring, negative brush is touched mutually with annular ring all the time, otherwise or also can, promptly each phase winding respectively connects a negative brush, connect a positive brush altogether, positive brush is touched mutually with annular ring all the time.

During work, this motor is by the electromagnetic torque drive motors running of magnetic resistance character, referring to Fig. 5.During Fig. 5 (a) situation, when the positive and negative brush 6,6 ' that links to each other with stator A phase winding touched mutually with change of current slip ring tooth, the energising of A phase winding produced magnetic field, because the magnetic field distortion, rotor will drive to the minimum reluctance state, so rotor will rotate counterclockwise; As rotor with salient pole a, a ' forwards to stator A when salient pole overlaps mutually, sees Fig. 5 (b), A phase brush and the disengaging of change of current slip ring tooth, the outage of A phase winding, and this moment, B phase brush has touched mutually with change of current slip ring tooth, the energising of B phase winding, the electromagnetic torque of generation magnetic resistance character makes rotor continue to rotate counterclockwise.This shows that motor of the present invention by the on-off action of brush and change of current slip ring, makes each phase winding connect in turn power supply, thereby realize that motor turns round continuously.This motor can be an internal rotor, also can be external rotor.Can be monophase machine, also can be polyphase machine.According to the difference of the number of phases, can have the situation that the above winding of two-phase or two-phase is switched on simultaneously.The motor direction of rotation depends on the relative installation of brush and change of current slip ring tooth.

In sum, slip-ring converting reluctance motor provided by the invention organically combines DC series motor and reluctance motor, its stator and rotor are salient pole, rotor does not have winding, are the on-off actions by brush and change of current slip ring, make each phase winding connect in turn power supply by the electric current phase sequence and continuously running, do not need to dispose the electronic-controlled installation that is used to control the stator winding change of current, so this electric machine structure is simple, reliable, material is economized, cost is low, makes, uses all very convenient.

Claims

1. slip-ring converting reluctance motor, has salient pole type stator core [2], salient pole rotor iron core [4], it is characterized in that having a gear-like conduction change of current slip ring [5] and the coaxial rotation of rotor core, and with the positive and negative brush [6 of device on end cap, 6 '] sliding contact, on the salient pole of stator core, be nested with concentrating coil [3] respectively, coil on per two salient poles constitutes a phase winding, every phase winding links to each other with power supply through positive and negative brush and change of current slip ring, when the tooth of change of current slip ring touches mutually with certain mutually positive and negative brush, this phase winding energized then.

2. by the described slip-ring converting reluctance motor of claim 1, it is characterized in that the number of teeth of said change of current slip ring equates with the rotor with salient pole number.

3. by the described slip-ring converting reluctance motor of claim 1, it is characterized in that being provided with equalization block [5 '] with change of current slip ring same material, between equalization block [5 '] and change of current slip ring [5], be filled with insulating material [7] and have smooth outer garden side face at the tooth of change of current slip ring [5] and between cog.

4. by the described slip-ring converting reluctance motor of claim 2, it is characterized in that being provided with equalization block [5 '] with change of current slip ring same material, between equalization block [5 '] and change of current slip ring [5], be filled with insulating material [7] and have smooth outer garden side face at the tooth of change of current slip ring [5] and between cog.

5. by the described slip-ring converting reluctance motor of claim 1, two salient pole coils that it is characterized in that constituting phase winding are relative two salient pole coils or adjacent two salient pole coils.

6. by the described slip-ring converting reluctance motor of claim 1, after it is characterized in that constituting the coil series connection of relative two salient poles of stator of phase winding, one termination positive supply, another termination brush [6], this brush is communicated with through the brush [6 '] that change of current slip ring and another connect negative supply.

7. by the described slip-ring converting reluctance motor of claim 1, it is characterized in that constituting coil, a termination power of each coil, another termination brush, brush and the sliding contact of change of current slip ring on relative two salient poles of stator of phase winding.

8. by the described slip-ring converting reluctance motor of claim 1, it is characterized in that said change of current slip ring axially has annular ring, each phase winding respectively connects a positive brush, connect a negative brush altogether, otherwise or, respectively connect a negative brush, connect a positive brush altogether, its shared brush contacts with the annular ring of change of current slip ring all the time.

9. by the described slip-ring converting reluctance motor of arbitrary claim in the claim 1 to 8, it is characterized in that rotor is internal rotor or external rotor.