CN207559705U - A kind of mixed excitation claw-pole rotor and generator - Google Patents
A kind of mixed excitation claw-pole rotor and generator Download PDFInfo
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- CN207559705U CN207559705U CN201721847654.3U CN201721847654U CN207559705U CN 207559705 U CN207559705 U CN 207559705U CN 201721847654 U CN201721847654 U CN 201721847654U CN 207559705 U CN207559705 U CN 207559705U
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- pawl pole
- pole
- permanent magnet
- differential protection
- transverse differential
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Abstract
The utility model discloses a kind of mixed excitation claw-pole rotor and generators, and the requirement of low speed generated energy is met by relatively low cost.Including armature spindle, preceding pawl pole, rear pawl pole and slip ring on armature spindle, the preceding pawl pole and rear pawl pole are equipped with circumferentially the staggeredly pawl pole piece of cooperation, magnetic is installed in cavity between preceding pawl pole and rear pawl pole to grip, Exciting Windings for Transverse Differential Protection is arranged in the yoke, two lead-out wires of the Exciting Windings for Transverse Differential Protection are connect with slip ring, and permanent magnet is equipped between two adjacent pawl pole pieces.The utility model installs one piece of permanent magnet between the pawl pole piece gap of generator.The magnetic field formation parallel circuits that the magnetic field that permanent magnet energization generates is generated with Exciting Windings for Transverse Differential Protection energization, so as to reduce the leakage magnetic flux between pawl pole, improve air-gap flux amount.
Description
Technical field
The utility model is related to technical field of generators.
Background technology
Existing generator is electrical excitation, first generates axial magnetic flux, and radial flux warp is converted by yoke and pawl pole
Cross air gap, stator is returned on rotor.Leakage field between this motor pawl pole is bigger, causes air-gap flux smaller, during low speed
Undercapacity.When the requirement to meet low speed generated energy, then need to increase volume, coil turn of generator etc., it is raw
It is significantly higher to produce cost.
Utility model content
Technical problem to be solved in the utility model is just to provide a kind of mixed excitation claw-pole rotor, by it is relatively low into
This meets the requirement of low speed generated energy.
In order to solve the above technical problems, the utility model adopts the following technical solution：A kind of mixed excitation claw-pole rotor, packet
Armature spindle is included, preceding pawl pole, rear pawl pole and slip ring on armature spindle, the preceding pawl pole and rear pawl pole are equipped with and circumferentially hand over
The pawl pole piece that mispairing is closed is equipped with magnetic in the cavity between preceding pawl pole and rear pawl pole and grips, be arranged in the yoke excitation around
Group, two lead-out wires of the Exciting Windings for Transverse Differential Protection are connect with slip ring, permanent magnet are equipped between two adjacent pawl pole pieces, and permanent magnet leads to
The magnetic field that the magnetic field that electricity generates is generated with Exciting Windings for Transverse Differential Protection energization forms parallel circuits.
Preferably, the preceding pawl pole and rear pawl pole are formed by steel hot investment casting or cold extrusion.
Preferably, the slip ring is made of two copper rings insulated from each other.
Preferably, described two copper rings insulated from each other are pressed into one by phenolic glass fiber plastic.
Preferably, two lead-out wires of the Exciting Windings for Transverse Differential Protection are welded in respectively on two copper rings insulated from each other.
Preferably, the pawl pole on piece offers the permanent magnet slot for being inserted into permanent magnet.
The utility model additionally provides a kind of generator, equipped with above-mentioned pawl pole rotor.
The technical solution adopted in the utility model installs one piece of permanent magnet between the pawl pole piece gap of generator.Permanent magnetism
The magnetic field formation parallel circuits that the magnetic field that body energization generates is generated with Exciting Windings for Transverse Differential Protection energization, so as to reduce the leakage magnetic flux between pawl pole,
Air-gap flux amount is improved, therefore, generated energy increases during low speed, and need not increase excessive cost, can meet generator low speed
Requirement.
Description of the drawings
The utility model is further described with reference to the accompanying drawings and detailed description：
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the fit structure schematic diagram of rotor pawl pole and permanent magnet；
Fig. 3 is magnetic structure schematic diagram of the generator when being powered.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to this practicality
Novel and its application or any restrictions used.Based on the embodiment in the utility model, those of ordinary skill in the art are not having
All other embodiments obtained under the premise of creative work are made, shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of mixed excitation claw-pole rotor, including armature spindle 1, preceding pawl pole 4 on armature spindle 1,
Pawl pole 5, brush 6 and slip ring 2 afterwards, the preceding pawl pole 4 and rear pawl pole 5 are equipped with circumferentially the staggeredly pawl pole piece of cooperation, in fore paw
Magnetic is installed in cavity between pole 4 and rear pawl pole 5 to grip, Exciting Windings for Transverse Differential Protection 3 is arranged in the yoke, the Exciting Windings for Transverse Differential Protection 3
Two lead-out wires are connect with slip ring 2.
Shown referring to figs. 2 and 3, the utility model mixed excitation claw-pole rotor is adjacent two in order to increase excitation ability
Permanent magnet 7 is equipped between two pawl pole pieces, pawl pole on piece offers the permanent magnet slot for being inserted into permanent magnet 7, and permanent magnet 7 need not
Additional fixed structure.The magnetic field formation parallel circuits that the magnetic field that the energization of permanent magnet 7 generates is generated with the energization of Exciting Windings for Transverse Differential Protection 3, this
Sample is in the case of exciting current very little, it is possible to and reach original requirement, reduce input power, and output power is constant,
So as to improve the efficiency of motor.
As shown in figure 3, when two brushes connect with DC power supply, just there is exciting current to pass through in Exciting Windings for Transverse Differential Protection, generate
Axial magnetic flux so that one piece of pawl pole is geomagnetic into N poles, and another piece is geomagnetic into S poles, so as to form N, S magnetic to cross one another
Pole.In Fig. 3, the main field path of alternating current generator：31 → N of yoke poles → air gap → stator between rotor and stator (includes
Stator core 8, stator winding 81) → air gap → S poles → yoke 31 between stator and rotor, pawl pole rotor field coil 3 is logical
After electricity, Exciting Windings for Transverse Differential Protection 3 generates axial magnetic flux, this magnetic flux can just be converted into radial flux, main flux warp by the help of pawl pole
The path crossed is：Main flux reaches stator yoke, then reach pawl pole S poles through stator tooth, air gap through pawl pole N poles, air gap, stator tooth,
By rotor rim, pawl pole N poles are returned to, so as to form a circuit.Wherein air gap is main determinant.Permanent magnet 7 is filled out
After having filled pawl pole portion gap, leakage magnetic flux 9 greatly reduces, and more magnetic fluxs is forced to enter stator winding 81 from rotor, so as to carry
The high delivery efficiency of alternating current generator.
As shown in Fig. 2, when generator powers off, N poles → N pawl poles → yoke → S pawl poles → S poles.Mixed excitation claw-pole generates electricity
The magnetic circuit of machine is generated by Exciting Windings for Transverse Differential Protection and permanent magnet collective effect, and total magnetic flux can be decomposed into main flux and leakage magnetic flux two
Part.Main flux is the part magnetic flux across stator coil and induced potential, and leakage magnetic flux is that do not pass through stator coil
Part magnetic flux.Leakage field between two adjacent pawl poles is bigger, since pawl pole is an entirety, very big, the shortcoming of vortex therein
It is the loss increasing for causing motor, delivery efficiency is very low.Advantage is the pawl pole in the case where overload, stator current increase
It is interior to generate vortex, increase the demagnetizing effect of stator, so as to play the role of protecting motor, such case is comparing working environment
Severe motor plays the role of more obvious.
The magnetic flux that permanent magnet generates is smaller, and magnetic circuit is：From permanent magnet N poles, by air gap, stator tooth (also cross
Stator coil), stator core yoke portion, adjacent stator tooth, then by air gap, to the S poles of adjacent permanent magnet, by pawl pole, return
To permanent magnet, the magnetic loop of main flux is formed.Since permanent magnet does not need to additional excitation, that is to say, that be not required to additionally increase input
Power, therefore the part output power that is provided of permanent magnet can improve the delivery efficiency of generator.
The preceding pawl pole 4 and rear pawl pole 5 are formed by steel hot investment casting or cold extrusion.Yoke is generally by steel or electrical pure iron system
Into Exciting Windings for Transverse Differential Protection 3 is formed by high strength enamelled wire coiling.The slip ring 2 is made of two copper rings insulated from each other, Exciting Windings for Transverse Differential Protection
3 two lead-out wires be welded in respectively on two copper rings insulated from each other.Described two copper rings insulated from each other pass through phenolic aldehyde glass
Glass compo is pressed into one, then urges it against on armature spindle.The outer round surface of slip ring answers flat smooth, so as to rotor at a high speed
Run time with brush meet sliding contact requirement.
Embodiment two, especially a kind of hybrid claw-pole alternator, AC generator for vehicle are equipped with above-mentioned pawl pole
Rotor.Since hybrid claw-pole alternator in common generator claw interpolar installs one piece of permanent magnet.Permanent magnet is filled with
After pawl pole portion gap, leakage magnetic flux greatly reduces, and more magnetic fluxs is forced to enter stator winding from rotor, so as to improve exchange
The delivery efficiency of generator.The hybrid claw-pole alternator has the following advantages that：
Permanent magnet 7 increases generator specific power using the rare earth permanent-magnetic material excitation of high magnetic energy.
The exciting current of Exciting Windings for Transverse Differential Protection is reduced, and excitation loss is also accordingly reduced, thus the efficiency of generator also accordingly improves.
The idling performance of generator is good, in idling, can also meet the required voltage and current requirement of vehicle load.
As a result of permanent magnet and the common excitation of coil, exciting current can be adjusted to adjust output voltage, had both
Output voltage controllability and the high efficiency of magneto are.
In addition to above preferred embodiment, the utility model also has other embodiments, and those skilled in the art can root
It is made various changes and modifications according to the utility model, without departing from the spirit of the utility model, the utility model should all be belonged to
Range as defined in the claims.
Claims (7)
1. a kind of mixed excitation claw-pole rotor, including armature spindle, preceding pawl pole, rear pawl pole and slip ring on armature spindle,
The preceding pawl pole and rear pawl pole are equipped with circumferentially the staggeredly pawl pole piece of cooperation, are installed in the cavity between preceding pawl pole and rear pawl pole
There is yoke, Exciting Windings for Transverse Differential Protection is arranged in the yoke, two lead-out wires of the Exciting Windings for Transverse Differential Protection are connect with slip ring, and feature exists
In：Permanent magnet, and the magnetic that the magnetic field of permanent magnet energization generation is generated with Exciting Windings for Transverse Differential Protection energization are equipped between two adjacent pawl pole pieces
Field forms parallel circuits.
2. a kind of mixed excitation claw-pole rotor according to claim 1, it is characterised in that：The preceding pawl pole and rear pawl pole by
Steel hot investment casting or cold extrusion form.
3. a kind of mixed excitation claw-pole rotor according to claim 1, it is characterised in that：The slip ring is exhausted each other by two
The copper ring composition of edge.
4. a kind of mixed excitation claw-pole rotor according to claim 3, it is characterised in that：Described two copper insulated from each other
Ring is pressed into one by phenolic glass fiber plastic.
5. a kind of mixed excitation claw-pole rotor according to claim 3, it is characterised in that：Two of the Exciting Windings for Transverse Differential Protection draw
Outlet is welded in respectively on two copper rings insulated from each other.
6. a kind of mixed excitation claw-pole rotor according to claim 1 to 5 any one, it is characterised in that：The pawl pole
On piece offers the permanent magnet slot for being inserted into permanent magnet.
7. a kind of generator, it is characterised in that：The generator includes the pawl pole rotor described in claim 1 to 6 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721847654.3U CN207559705U (en) | 2017-12-26 | 2017-12-26 | A kind of mixed excitation claw-pole rotor and generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721847654.3U CN207559705U (en) | 2017-12-26 | 2017-12-26 | A kind of mixed excitation claw-pole rotor and generator |
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| Publication Number | Publication Date |
|---|---|
| CN207559705U true CN207559705U (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721847654.3U Active CN207559705U (en) | 2017-12-26 | 2017-12-26 | A kind of mixed excitation claw-pole rotor and generator |
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| CN (1) | CN207559705U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964306A (en) * | 2018-07-16 | 2018-12-07 | 成都华川电装有限责任公司 | Pawl pole and rotor for 48V starting motor integrating |
-
2017
- 2017-12-26 CN CN201721847654.3U patent/CN207559705U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964306A (en) * | 2018-07-16 | 2018-12-07 | 成都华川电装有限责任公司 | Pawl pole and rotor for 48V starting motor integrating |
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