CN203119725U - Compound excitation type alternating current exciter - Google Patents
Compound excitation type alternating current exciter Download PDFInfo
- Publication number
- CN203119725U CN203119725U CN 201320141174 CN201320141174U CN203119725U CN 203119725 U CN203119725 U CN 203119725U CN 201320141174 CN201320141174 CN 201320141174 CN 201320141174 U CN201320141174 U CN 201320141174U CN 203119725 U CN203119725 U CN 203119725U
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- permanent magnet
- rotor
- magnetic pole
- stator
- exciter
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Abstract
The utility model relates to a compound excitation type alternating current exciter, which comprises a stator pole and a rotor, wherein the rotor is arranged in the stator pole, an air gap is arranged between the rotor and the stator pole, the stator pole comprises a stator pole core, an excitation winding and a permanent magnet, wherein the excitation winding is wound on the stator pole core, one of two magnetizing surfaces of the permanent magnet is in contact with the stator pole core, the other one magnetizing surface is in contact with the air gap, the surface of the permanent magnet contacted with the air gap is not interfered with the external circular surface of the rotor, and the directions of the magnetic field produced by the permanent magnet and the magnetic field produced by the excitation winding are consistent. Because one surface of the two magnetizing surfaces of the permanent magnet is in contact with the stator pole core, the other one magnetizing surface of the permanent magnet is contact with the air gap, the magnetic field produced by the permanent magnet forms a closed circuit through the air gap, a rotor core, a stator yoke and a stator pole core, and when inner remanent magnetism of magnetic field of a main generator and an exciter core is not enough, the compound excitation type alternating current exciter supplies an excitation initiating magnetic field which is needed by self-excited pressure building.
Description
Technical field
The utility model relates to technical field of motors, relates in particular to a kind of compound rectifier excitation formula AC exciter.
Background technology
Because the self-excitation brushless excitation system does not have the field power supply of outside supply, the exciting current of AC exciter needs to be produced by main generator and excitation system itself thereof; Therefore, after excitation system needs self to set up excitation voltage, could operate as normal.
Usually, set up excitation voltage, need main generator and AC exciter core interior to have certain remanent magnetism magnetic field intensity.When the residual magnetization of main generator and AC exciter core interior does not reach when requiring, excitation system then can not be set up excitation voltage, normally excitation.
The utility model content
The purpose of this utility model is to overcome above defective, provides a kind of can the self-excitation to build the compound rectifier excitation formula AC exciter of pressure.
For achieving the above object, the utility model is taked following design: a kind of compound rectifier excitation formula AC exciter, it comprises magnetic pole of the stator and rotor, rotor places in the magnetic pole of the stator, leave air gap between rotor and magnetic pole of the stator, magnetic pole of the stator comprises the magnetic pole of the stator iron core, excitation winding, permanent magnet, excitation winding is wound on the magnetic pole of the stator iron core, one side contacts with the magnetic pole of the stator iron core in two faces that magnetize of described permanent magnet, another side contacts with air gap, the surface that described permanent magnet contacts with air gap not with the interference of rotor periphery, the magnetic field that described permanent magnet produces is consistent with the magnetic direction of excitation winding generation.
For easy for installation, the internal circular surfaces of described magnetic pole of the stator iron core is provided with groove, and the overall dimension of groove size and permanent magnet is complementary, and described permanent magnet places in the groove.
Described permanent magnet is cemented in the groove by seccotine.
The height dimension of described groove is consistent with the height dimension of permanent magnet.
The height dimension of described groove is bigger than the height dimension of permanent magnet.
The height dimension of described groove is littler than the height dimension of permanent magnet.
Effect of the present utility model is: because one side contacts with the magnetic pole of the stator iron core in two faces that magnetize of permanent magnet, another side contacts with air gap, the magnetic field that permanent magnet produces forms the closed-loop path via air gap, rotor core, stator yoke, magnetic pole of the stator iron core, when main generator and exciter core interior remanent magnetism magnetic field are not enough, provide self-excitation to build and having pressed required excitation excitation field.Particularly permanent magnet is installed in the groove on magnetic pole of the stator iron core surface, the occupying volume external space is not simple in structure.
Description of drawings
Fig. 1 is structure chart of the present utility model;
Fig. 2 is main magnetic circuit schematic diagram of the present utility model.
Embodiment
Below with reference to accompanying drawing the utility model is described further.
It comprises magnetic pole of the stator and rotor, and rotor places in the magnetic pole of the stator, leaves air gap between rotor and magnetic pole of the stator.Magnetic pole of the stator comprises magnetic pole of the stator iron core 2, excitation winding 3, permanent magnet 4, excitation winding 3 is wound on the magnetic pole of the stator iron core 2, magnetic pole of the stator iron core 2 is fixed on the stator yoke 1 by magnetic pole of the stator hold-down screw 7, one side contacts with magnetic pole of the stator iron core 2 in 4 two faces that magnetize of described permanent magnet, another side contacts with air gap, for easy for installation, the internal circular surfaces of described magnetic pole of the stator iron core 2 is provided with groove, described permanent magnet 4 is cemented in the groove by seccotine, the height dimension of groove is consistent with the height dimension of permanent magnet 4, what be the surface that contacts with air gap of permanent magnet 4 with magnetic pole of the stator iron core 2 is surperficial concordant, and the magnetic field that permanent magnet 4 produces is consistent with the magnetic direction of excitation winding 3 generations.
During work, when main generator and exciter core interior remanent magnetism magnetic field are not enough, the magnetic field that permanent magnet 4 produces forms the closed-loop path via air gap, rotor core 6, stator yoke 1, magnetic pole of the stator iron core 2, provide the self-excitation of compound rectifier excitation formula AC exciter to build and pressed required excitation field, this excitation field carries out excitation to armature rotor winding 5, and armature rotor winding 5 output currents and voltage carry out excitation to main generator, and main generator obtains excitation, output current and voltage are finished excitation and are built pressure; After the excitation, excitation winding 3 obtains exciting current from the main generator output, and after this excitation winding 3 and permanent magnet 4 provide excitation field jointly, and the direction unanimity in two magnetic fields is carried out excitation to armature rotor winding 5.
More than be a kind of execution mode of the present utility model, a preferred demonstration example.The scope that the utility model application is asked for protection has more than and is limited to described execution mode.The technical scheme of all and present embodiment equivalence, as permanent magnet whether in the outstanding or recessed groove, as long as the surface that permanent magnet contacts with air gap not with the interference of rotor periphery, it all belongs to protection range of the present utility model.
Claims (6)
1. compound rectifier excitation formula AC exciter, it comprises magnetic pole of the stator and rotor, rotor places in the magnetic pole of the stator, leave air gap between rotor and magnetic pole of the stator, magnetic pole of the stator comprises magnetic pole of the stator iron core, excitation winding, permanent magnet, excitation winding is wound on the magnetic pole of the stator iron core, it is characterized in that, one side contacts with the magnetic pole of the stator iron core in two faces that magnetize of described permanent magnet, another side contacts with air gap, the surface that described permanent magnet contacts with air gap not with the interference of rotor periphery, the magnetic field that described permanent magnet produces is consistent with the magnetic direction of excitation winding generation.
2. a kind of compound rectifier excitation formula AC exciter according to claim 1 is characterized in that the internal circular surfaces of described magnetic pole of the stator iron core is provided with groove, and the overall dimension of groove size and permanent magnet is complementary, and described permanent magnet places in the groove.
3. a kind of compound rectifier excitation formula AC exciter according to claim 2 is characterized in that described permanent magnet is cemented in the groove by seccotine.
4. according to claim 2 or the described a kind of compound rectifier excitation formula AC exciter of claim 3, it is characterized in that the height dimension of described groove is consistent with the height dimension of permanent magnet.
5. according to claim 2 or the described a kind of compound rectifier excitation formula AC exciter of claim 3, it is characterized in that the height dimension of described groove is bigger than the height dimension of permanent magnet.
6. according to claim 2 or the described a kind of compound rectifier excitation formula AC exciter of claim 3, it is characterized in that the height dimension of described groove is littler than the height dimension of permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320141174 CN203119725U (en) | 2013-03-26 | 2013-03-26 | Compound excitation type alternating current exciter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320141174 CN203119725U (en) | 2013-03-26 | 2013-03-26 | Compound excitation type alternating current exciter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203119725U true CN203119725U (en) | 2013-08-07 |
Family
ID=48900040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320141174 Expired - Lifetime CN203119725U (en) | 2013-03-26 | 2013-03-26 | Compound excitation type alternating current exciter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203119725U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103124123A (en) * | 2013-03-26 | 2013-05-29 | 湘潭电机股份有限公司 | Composite excited alternating current exciter |
| CN103532259A (en) * | 2013-10-12 | 2014-01-22 | 山东理工大学 | Hybrid-excitation generator for vehicles |
-
2013
- 2013-03-26 CN CN 201320141174 patent/CN203119725U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103124123A (en) * | 2013-03-26 | 2013-05-29 | 湘潭电机股份有限公司 | Composite excited alternating current exciter |
| CN103532259A (en) * | 2013-10-12 | 2014-01-22 | 山东理工大学 | Hybrid-excitation generator for vehicles |
| CN103532259B (en) * | 2013-10-12 | 2015-08-05 | 山东理工大学 | Vehicle complex excitation 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: 20130807 |