CN1540844A - Composite excited rare earth permanent magnet synchronous generator - Google Patents
Composite excited rare earth permanent magnet synchronous generator Download PDFInfo
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- CN1540844A CN1540844A CNA2003101104724A CN200310110472A CN1540844A CN 1540844 A CN1540844 A CN 1540844A CN A2003101104724 A CNA2003101104724 A CN A2003101104724A CN 200310110472 A CN200310110472 A CN 200310110472A CN 1540844 A CN1540844 A CN 1540844A
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- permanent magnet
- earth permanent
- excitation
- rotor
- auxiliary electrical
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Abstract
The generator includes shaft, end cover, chassis and armature winding. Character is that rotor of rare earth permanent magnet being as main excitation and rotor of assistant electricity excitation for adjusting voltage are installed on shaft. The said two rotors share armature winding. Winding of assistant electricity excitation is connected to voltage adjustment circuit. Thus, changing polarity of excitation current changes magnetic field polarity of assistant electricity excitation so as to adjust output voltage. The invention realizes brushless excitation and runs in high efficiency; and features simple compact structure, and stable voltage.
Description
Technical field:
The invention belongs to generator, be specifically related to the architecture advances of rare earth permanent magnet synchronous generator.
Background technology:
Motor be with the electromagnetic field for matchmaker's valency carries out the calutron that mechanical energy and electric energy are changed mutually, carry out the necessary air-gap field of energy converting between mechanical in order in motor, to set up, two kinds of methods can be arranged.A kind of be in motor windings by producing magnetic field with electric current, for example common direct current machine and synchronous machine.The motor of this electric excitation had both needed special winding and corresponding device thereof, and needing constantly again, energize flows to keep electric current; Another kind is to produce magnetic field by permanent magnet because the inherent characteristic of permanent magnetic material, it through magnetization (magnetizing) in advance after, do not need external energy just can set up magnetic field at its surrounding space, this both can simplify electric machine structure, but conserve energy again.Along with coming out one after another of Al-Ni-Co permanent magnet, ferrite permanent-magnet, particularly rare earth permanent magnet, the magnetic property of permanent magnet is greatly improved, and many electro-magnetic motors are used the rare-earth permanent magnet excitation again one after another instead.For the Rare-Earth Magnetic synchronous generator, it simple in structure, reliable, volume is little, light weight, loss is little, efficient is high.But the excitation field of rare-earth permanent magnet can't be regulated, therefore, when the load of generator or rotation speed change, it is the comparison difficulty that this class generator keeps constant voltage, make its application be very restricted, particularly be difficult to apply in the field that power supply quality is had relatively high expectations.
Summary of the invention:
Technical problem to be solved by this invention is to overcome the prior art deficiency, provide a kind of output voltage and sustaining voltage of regulating stable, realize motor brushless excitation and run up, reliability and stability are good, can be used for the Hybrid Excitation Rare Earth Permanent Magnet synchronous generator in the demanding field of power supply quality.
Solve above-mentioned technology institute by the following technical solutions: the present invention includes the synchronous generator of a kind of Hybrid Excitation Rare Earth Permanent Magnet, comprise rotating shaft, end cap, casing, armature winding, it is characterized in that being equipped with in the rotating shaft main excitation rare-earth permanent magnet rotor and pressure regulation auxiliary electrical magnetic part rotor, described rare-earth permanent magnet rotor and the shared armature winding of auxiliary electrical magnetic part rotor, the magnetic potential of generation is in magnetic circuit and be unified into.
As a further improvement on the present invention, adopt rare-earth permanent magnet rotor and auxiliary electrical magnetic part rotor coaxial to linking to each other.The auxiliary electrical magnetic part rotor is the Lundell structure, and it is equated and be half fore paw, rear solid end of number of poles by the pawl number, and the electric magnet exciting coil that is clipped in the middle of two pawls forms, and connects by non-magnet material between two pawls, and pawl staggers mutually, along circular evenly distribution.The auxiliary electrical magnetic part coil is fixed on the end cap (2) by magnetic conduction carriage (3).
Because the present invention has adopted the technical scheme of compound rectifier excitation, preferably resolve the pressure regulation difficult problem of rare earth permanent magnet synchronous generator, the auxiliary electrical magnetic part rotor adopts claw-pole structure, realizes that motor brushless excitation and motor efficiently move, and reliability is improved; Simultaneously the auxiliary electrical magnetic part coil links to each other with voltage regulator circuit, can change the auxiliary electrical magnetic part polarity of the magnetic field by changing exciting current polarity, thus adjusting output voltage (increase or reduce).Master's excitation permanent magnet rotor of the present invention and auxiliary electrical magnetic part rotor be totally one rotating shaft and armature winding, and coaxial installation, and simple and compact for structure, manufacturing process is reasonable; Both improve the stability of permanent magnet generating voltage effectively, controlled motor volume and weight again.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structure diagram of auxiliary electrical magnetic part rotor.
Fig. 3 is the fore paw structure diagram.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the rear solid end structure diagram.
Fig. 6 is the left view of Fig. 5.
Fig. 7 can realize the theory diagram of voltage-regulation for the present invention.
The present invention is further illustrated below in conjunction with description of drawings.
Embodiment:
As shown in Figure 1, the present invention includes the synchronous generator of a kind of Hybrid Excitation Rare Earth Permanent Magnet, comprise rotating shaft 1, end cap 2, casing 11, armature winding 8, it is characterized in that being equipped with in the rotating shaft 1 main excitation rare-earth permanent magnet rotor 9 and pressure regulation auxiliary electrical magnetic part rotor, the shared armature winding 8 of described rare-earth permanent magnet rotor and auxiliary electrical magnetic part rotor, the magnetic potential of generation is in magnetic circuit and be unified into.
Shown in Fig. 1-6, among the present invention, described auxiliary electrical magnetic part rotor is the Lundell structure, it is equated by the pawl number and the pawl number is half fore paw 4, a rear solid end 6 of number of poles, and the solenoid 5 that is clipped in the middle of two pawls is formed, and connects by non-magnet material between two pawls, pawl staggers mutually, evenly distributes along circular; The auxiliary electrical magnetic part rotor is fixed in end cap 2 by magnetic conduction carriage 3, thereby has realized the non-brushing of whole motor.
Therefore working as a pawl is the S utmost point, and another pawl is the N utmost point, forms the multisegmented rotor that polarity is different, stagger mutually.The pawl of claw-pole rotor plays pole shoe, and the air-gap flux of claw-pole rotor trend is the electric excitation body N → pawl utmost point → air gap → stator → air gap → another pawl utmost point → electric excitation body S utmost point, thus grab and periphery on form the alternate polarity of N, S.When rotor rotates, just in stator armature winding 8, induce alternating potential.
When empty load of motor moved, electric current was zero in the armature winding, the permanent magnetic potential F that has only permanent magnet 9 to produce in the air gap
MExcitation magnetic potential F with electric excitation winding 5 generations
e, F
MAnd F
eAir-gap field when the foundation that interacts is unloaded.Two parts magnetic potential induces unloaded induced potential E respectively in armature winding 8
0m, E
0e, E
0mBe the no-load emf that permanent magnetic potential and armature winding 8 interlinkages are produced, E
0eThe no-load emf that is produced for electric excitation magnetic potential and armature winding 8 interlinkages.
When motor moves under balanced load, three-phase current on the armature winding 8 also will be set up the first-harmonic armature magnetomotive force, the excitation magnetic potential that magnetic potential that armature magnetomotive force and permanent magnet 9 produces and electric excitation winding 5 the produce synthetic magnetomotive force in the air gap when forming load that interacts, and the air-gap field when setting up load.Air-gap field when the air-gap field of this moment has been different from zero load, by the armature reaction theory of synchronous machine as can be known, the first-harmonic of the armature magnetomotive force that the three phase symmetry load electric current on the armature winding 8 is produced be one with the equidirectional circle rotation magnetomotive force with rotating speed of rotor, thereby the excitation magnetic potential that the permanent magnetic potential that produces with permanent magnet and electric excitation winding 5 produce spatially is relative static.The character of armature reaction (magnetic assist, degaussing or friendship magnetic) depends on armature magnetomotive force first-harmonic and the synthetic magnetomotive relative space position of rotor.
In order to keep the constant of generator voltage, can when load current changes, regulate the magnetic field of auxiliary electrical magnetic part part, change the induced potential of auxiliary electrical magnetic part partial stator winding, the total induced potential of stator winding is changed, and then reach the purpose of stable electric generation set end voltage.The overall voltage-regulation principle block diagram of system as shown in Figure 5.Entire circuit mainly is made up of three parts: excitation regulation circuit module, sampling and protection module and CPU control module.Auxiliary electrical magnetic part winding (5) links to each other with voltage regulator circuit, can change auxiliary electrical magnetic part polarity by changing exciting current polarity, thereby regulates output voltage (increase or reduce).
Claims (4)
1, a kind of Hybrid Excitation Rare Earth Permanent Magnet synchronous generator, comprise rotating shaft (1), end cap (2), casing (11), armature winding (8), it is characterized in that being equipped with in the rotating shaft (1) main excitation rare-earth permanent magnet rotor, with pressure regulation auxiliary electrical magnetic part rotor, described rare-earth permanent magnet rotor and the shared armature winding of auxiliary electrical magnetic part rotor (8), the magnetic potential of generation is in magnetic circuit and be unified into.
2, Hybrid Excitation Rare Earth Permanent Magnet synchronous generator according to claim 1, it is characterized in that described auxiliary electrical magnetic part rotor is the Lundell structure, it is equated by the pawl number and the pawl number is half fore paw (4), a rear solid end (6) of number of poles, being clipped in the middle solenoid (5) of two pawls forms, connect by non-magnet material between two pawls, pawl staggers mutually, evenly distributes along circular.
3, Hybrid Excitation Rare Earth Permanent Magnet synchronous generator according to claim 2 is characterized in that the auxiliary electrical magnetic part rotor is fixed on the end cap (2) by magnetic conduction carriage (3).
4, the rare rare earth permanent magnet synchronous generator of compound rectifier excitation according to claim 1 is characterized in that auxiliary electrical magnetic part winding (5) links to each other with voltage regulator circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101104724A CN1540844A (en) | 2003-10-30 | 2003-10-30 | Composite excited rare earth permanent magnet synchronous generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101104724A CN1540844A (en) | 2003-10-30 | 2003-10-30 | Composite excited rare earth permanent magnet synchronous generator |
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| CN1540844A true CN1540844A (en) | 2004-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2003101104724A Pending CN1540844A (en) | 2003-10-30 | 2003-10-30 | Composite excited rare earth permanent magnet synchronous generator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100438278C (en) * | 2006-09-14 | 2008-11-26 | 湖南大学 | Combined type motor |
| CN100438279C (en) * | 2006-01-23 | 2008-11-26 | 湖南大学 | Composite excitation permanent magnet synchronous variable-speed motor |
| CN100454727C (en) * | 2005-10-14 | 2009-01-21 | 山东理工大学 | Composite excitation synchronous generator |
| CN101286683B (en) * | 2008-05-23 | 2010-06-09 | 哈尔滨理工大学 | Permanent magnetic and electromagnetic composite excitated synchronous electric machine with double velocity |
| CN112671193A (en) * | 2020-11-25 | 2021-04-16 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Mixed excitation type motor |
-
2003
- 2003-10-30 CN CNA2003101104724A patent/CN1540844A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100454727C (en) * | 2005-10-14 | 2009-01-21 | 山东理工大学 | Composite excitation synchronous generator |
| CN100438279C (en) * | 2006-01-23 | 2008-11-26 | 湖南大学 | Composite excitation permanent magnet synchronous variable-speed motor |
| CN100438278C (en) * | 2006-09-14 | 2008-11-26 | 湖南大学 | Combined type motor |
| CN101286683B (en) * | 2008-05-23 | 2010-06-09 | 哈尔滨理工大学 | Permanent magnetic and electromagnetic composite excitated synchronous electric machine with double velocity |
| CN112671193A (en) * | 2020-11-25 | 2021-04-16 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Mixed excitation type motor |
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