CN203660842U - AC generator exciter - Google Patents
AC generator exciter Download PDFInfo
- Publication number
- CN203660842U CN203660842U CN201320853597.5U CN201320853597U CN203660842U CN 203660842 U CN203660842 U CN 203660842U CN 201320853597 U CN201320853597 U CN 201320853597U CN 203660842 U CN203660842 U CN 203660842U
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- China
- Prior art keywords
- stator
- exciter
- rotor
- excitation
- permanent magnet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000005284 excitation Effects 0.000 claims abstract description 47
- 238000004804 winding Methods 0.000 claims abstract description 20
- 210000000515 tooth Anatomy 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 7
- 230000005389 magnetism Effects 0.000 abstract description 8
- 230000005415 magnetization Effects 0.000 abstract description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The utility model discloses an AC generator exciter. The AC generator exciter comprises an excitation stator core and an exciter rotor placed in the excitation stator core; the exciter rotor comprises a rotor yoke part, rotor teeth and rotor grooves; armature windings are disposed in the rotor grooves in a winding manner; the excitation stator core comprises a stator yoke part, a plurality of stator teeth and stator grooves; and armature windings are disposed in the stator grooves in a winding manner. The AC generator exciter is characterized in that one of the stator teeth is provided with an inlaid groove, the cross section of which is designed to be wide at an inner part and narrow at an opening part, in the radial direction, and a permanent magnet is disposed in the inlaid groove. The permanent magnet is disposed in the exciter stator core, so a magnetic field generated by the permanent magnet passes through an air gap, the exciter rotor, the stator teeth part and the stator yoke part to form a loop, the problem of internal residual magnetism is solved, the exciter is ensured to always have residual magnetism without external magnetization, and working reliability of a generator is improved.
Description
Technical field
The utility model relates to the compound rectifier excitation formula exciter of a kind of exciter, particularly a kind of alternating current generator.
Background technology
AC exciter is the device that rotor power supply is provided to generator amature, the Chinese utility model patent " external rotor type AC exciter " that for example patent No. is 200510063673.2, it has pair of bearing, main shaft is installed on bearing pedestal, the centre of two bearing pedestals be fixed with one with the main body of bearing pedestal same foundation face, one end in main body is provided with main frame, and the rotor of main frame is fixedly connected with main shaft; The other end in main body is provided with exciter, and exciter rotor is fixedly connected with main shaft, and its housing is connected with main shaft by two rolling bearings; The electricity that exciter sends is directly connected with main rotor after rectification.
Because self-excitation brushless excitation system is without the field power supply of outside supply, the exciting current of AC exciter need be produced by main generator and excitation system itself thereof; Therefore, excitation system needs self to set up after excitation voltage, could normally work.And set up excitation voltage, need main generator and AC exciter inside unshakable in one's determination to there is certain remanent magnetism magnetic field intensity.When main generator and AC exciter inner residual magnetization unshakable in one's determination does not reach while requiring, excitation system can not be set up excitation voltage, just normal excitation.
Utility model content
The technical problems to be solved in the utility model is the present situation for prior art, and a kind of alternating current generator exciter of energy self-excitation build up is provided.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of alternating current generator exciter, comprise excitation stator core and be placed in the exciter rotor in this excitation stator core, this exciter rotor comprises rotor yoke, rotor tooth and rotor, in this rotor, be wound with armature winding, described excitation stator core comprises stator yoke portion, multiple stator tooths and stator slot, in this stator slot, be wound with excitation winding, it is characterized in that: a wherein stator tooth footpath of described multiple stator tooths upwards has Section Design and becomes the narrow embedding groove of inner width oral area, in this embedding groove, be provided with permanent magnet.
As improvement, described embedding groove is dovetail groove, and described permanent magnet shape and this dovetail groove shape match, and this structure is easy to process, is also convenient to assembling.Certainly, embedding groove described above also can be designed to T-slot or Ω shape groove, and permanent magnet shape and this T-slot or Ω shape groove match, and such structure can reach the purpose of this utility model equally.
In above-mentioned each scheme, and described permanent magnet sticks in this embedding groove by glue, even if make permanent magnet in the situation that glue lost efficacy, also unlikely disengaging exciter stator iron core, avoids permanent magnet and exciter rotor friction and damage generator.
Improve, the circumferential both sides of described stator tooth have groove, are provided with baffle plate in adjacent notches again, and this baffle plate is positioned at the outside of described excitation winding, can effectively prevent that the excitation winding landing from stator tooth in stator slot from getting off.
Compared with prior art, owing to the utility model has the advantage of: generator exciter operation principle, after engine drawing generator rotates, generator exciter relies on inner remanent magnetism or outside magnetizing to set up lower voltage, this voltage acts on exciting part and the exciting current that produces makes the continuous promotion of generator voltage, is finally stable at setting value.Upwards have embedding groove by a stator tooth footpath wherein, in this embedding groove, be provided with permanent magnet, one side in two faces that magnetize of permanent magnet is contacted with excitation stator core, another side contacts with the air gap between excitation stator core and exciter rotor, the magnetic field that permanent magnet produces is via air gap, exciter rotor, stator teeth, stator yoke portion forms closed-loop path, solve the problem of inner remanent magnetism, guarantee that exciter has remanent magnetism all the time, magnetize without outside, in the time that main generator and exciter inner remanent magnetism unshakable in one's determination magnetic field is inadequate, provide self-excitation build up required excitation excitation field.In further scheme, permanent magnet embedding groove is designed to the dovetail groove of inner wide and outer narrow, permanent magnet is processed into and the dovetail strip of permanent magnet embedding groove same shape, permanent magnet is embedded in dovetail groove and is fastened with glue, even if make permanent magnet in the situation that glue lost efficacy, also unlikely disengaging exciter stator iron core, avoids permanent magnet and exciter rotor friction and damages generator.
Brief description of the drawings
Fig. 1 is the structural representation of alternating current generator exciter in the utility model embodiment;
Fig. 2 is the structural representation of stator teeth dovetail groove in the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Fig. 1 to 2, the alternating current generator exciter in this enforcement, comprises excitation stator core 1 and is placed in the exciter rotor 2 in this excitation stator core 1.
This exciter rotor 2 comprises rotor yoke 21, rotor tooth 23 and rotor 22, in this rotor 22, is wound with armature winding 5.Wherein, the number of the number of teeth of rotor gear 21 and rotor 22 is respectively 15.
This excitation stator core 1 comprises stator yoke portion 11, stator tooth 13 and stator slot 12, and wherein, the number of the number of teeth of stator tooth 13 and stator slot 12 is respectively 14, in this stator slot 12, is wound with excitation winding 6; Wherein stator tooth 13 footpaths upwards have Section Design and become the narrow embedding groove of inner width oral area, in the present embodiment, are preferably dovetail groove 131, in this dovetail groove 131, are provided with permanent magnet 4, make to form air gap between excitation stator core 1 and exciter rotor 2.On the one hand, these permanent magnet 4 shapes and this dovetail groove 131 shapes match, and the height of the height dimension of dovetail groove 131 and permanent magnet 4 is consistent, permanent magnet 4 surfaces towards air gap are positioned on same periphery with the surface of the stator tooth 13 of excitation stator core 1, and the magnetic field that permanent magnet 4 produces is consistent with the magnetic direction that excitation winding 6 produces.On the other hand, this permanent magnet 4 sticks in this dovetail groove 131 by glue, makes permanent magnet 4 in the situation that glue lost efficacy, and unlikely disengaging exciter stator iron core 1 avoids permanent magnet 4 and exciter rotor 2 rub and damage exciter.In addition, have groove 132 in the circumferential both sides of stator tooth 13, in adjacent notches 132, be provided with baffle plate 3, and this baffle plate 3 is positioned at the outside of excitation winding 6, ensure that the excitation winding 6 in stator slot 12 can not got off from stator tooth 13 in landing.
The operation principle of this alternating current generator exciter is: in the time that the inner remanent magnetism of main generator and field core magnetic field is inadequate, the magnetic field that permanent magnet 4 produces forms closed-loop path via air gap, exciter rotor 2, stator teeth 13, stator yoke portion 11, provide alternating current generator exciter self-excitation build up required excitation field, this excitation field carries out excitation to epitrochanterian armature winding 5, epitrochanterian armature winding 5 output currents and voltage carry out excitation to main generator, main generator obtains excitation, output current and voltage, complete excitation and build pressure; After excitation, excitation winding 6 obtains exciting current from main generator output, and after this excitation winding 6 and permanent magnet 4 provide excitation field jointly, and the direction in two magnetic fields is consistent, and epitrochanterian armature is carried out to excitation around 5 groups.
Claims (5)
1. an alternating current generator exciter, comprise excitation stator core and be placed in the exciter rotor in this excitation stator core, this exciter rotor comprises rotor yoke, rotor tooth and rotor, in this rotor, be wound with armature winding, described excitation stator core comprises stator yoke portion, multiple stator tooth and stator slot, in this stator slot, be wound with excitation winding, it is characterized in that: a wherein stator tooth footpath of described multiple stator tooths upwards has Section Design and becomes the narrow embedding groove of inner width oral area, in this embedding groove, is provided with permanent magnet.
2. alternating current generator exciter according to claim 1, is characterized in that: described embedding groove is dovetail groove, and described permanent magnet shape and this dovetail groove shape match.
3. alternating current generator exciter according to claim 1, is characterized in that: described embedding groove is T-slot or Ω shape groove, and described permanent magnet shape and this T-slot or Ω shape groove match.
4. according to the alternating current generator exciter described in claims 1 to 3 any one, it is characterized in that: described permanent magnet sticks in this embedding groove by glue.
5. alternating current generator exciter according to claim 4, is characterized in that: the circumferential both sides of described stator tooth have groove, are provided with baffle plate in adjacent notches, and this baffle plate is positioned at the outside of described excitation winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320853597.5U CN203660842U (en) | 2013-12-23 | 2013-12-23 | AC generator exciter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320853597.5U CN203660842U (en) | 2013-12-23 | 2013-12-23 | AC generator exciter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203660842U true CN203660842U (en) | 2014-06-18 |
Family
ID=50927191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320853597.5U Expired - Lifetime CN203660842U (en) | 2013-12-23 | 2013-12-23 | AC generator exciter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203660842U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI627818B (en) * | 2017-01-26 | 2018-06-21 | 王文民 | Permanent magnet variable magnetic circuit generator |
| CN110311483A (en) * | 2019-07-31 | 2019-10-08 | 镇江中船现代发电设备有限公司 | No-brush synchronous generator salient pole type exciter stator and manufacturing method |
| CN112104111A (en) * | 2020-09-14 | 2020-12-18 | 北京世纪康华电气科技有限公司 | Exciter stator punching sheet, stator core, stator, hybrid excitation device and generator |
-
2013
- 2013-12-23 CN CN201320853597.5U patent/CN203660842U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI627818B (en) * | 2017-01-26 | 2018-06-21 | 王文民 | Permanent magnet variable magnetic circuit generator |
| CN110311483A (en) * | 2019-07-31 | 2019-10-08 | 镇江中船现代发电设备有限公司 | No-brush synchronous generator salient pole type exciter stator and manufacturing method |
| CN112104111A (en) * | 2020-09-14 | 2020-12-18 | 北京世纪康华电气科技有限公司 | Exciter stator punching sheet, stator core, stator, hybrid excitation device and generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |