CN203119725U - Compound excitation type alternating current exciter - Google Patents

Compound excitation type alternating current exciter Download PDF

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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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CN
China
Prior art keywords
permanent magnet
rotor
magnetic pole
stator
exciter
Prior art date
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
Application number
CN 201320141174
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Chinese (zh)
Inventor
欧金生
陈雷
尹曾锋
荣大刚
王公强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiangtan Electric Manufacturing Co Ltd
Original Assignee
Xiangtan Electric Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xiangtan Electric Manufacturing Co Ltd filed Critical Xiangtan Electric Manufacturing Co Ltd
Priority to CN 201320141174 priority Critical patent/CN203119725U/en
Application granted granted Critical
Publication of CN203119725U publication Critical patent/CN203119725U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

A kind of compound rectifier excitation formula AC exciter
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.
CN 201320141174 2013-03-26 2013-03-26 Compound excitation type alternating current exciter Expired - Lifetime CN203119725U (en)

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

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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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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Granted publication date: 20130807