CN201813292U - Modular permanent magnet synchronous generator - Google Patents
Modular permanent magnet synchronous generator Download PDFInfo
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- CN201813292U CN201813292U CN2010205544733U CN201020554473U CN201813292U CN 201813292 U CN201813292 U CN 201813292U CN 2010205544733 U CN2010205544733 U CN 2010205544733U CN 201020554473 U CN201020554473 U CN 201020554473U CN 201813292 U CN201813292 U CN 201813292U
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- permanent magnet
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- synchronous generator
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a modularized permanent magnet synchronous generator. The modularized permanent magnet synchronous generator comprises a rotor yoke, rare earth permanent magnets, three-phase stator windings and stator iron cores, wherein the permanent magnets are uniformly stuck to the inner surface of the rotor yoke; stator teeth of the stator iron cores are two more than sheets of the permanent magnets; grooved insulating layers are coated on the stator teeth; the three-phase stator windings are wound outside the grooved insulating layer; the stator teeth of the stator iron cores are uniformly divided into six parts; each phase winding accounts for two opposite parts of the six parts and is wound on a corresponding groove; and out-phase windings are wound in only six grooves of two adjacent parts, and in-phase windings are wound in other grooves. The modularized permanent magnet synchronous generator can overcome the disadvantage that the conventional permanent magnet synchronous generator has a large cogging torque and the like. Simultaneously, due to the adoption of specially centralized windings, the generator can greatly improve the sine degree of an output voltage waveform, reduce copper consumption of the generator, and improve the power density of the generator.
Description
Technical field
The utility model relates to a kind of generator, specifically the modularization permanent-magnetism synchronous generator.
Background technology
The petrol and diesel oil generating set has very long developing history, has gone through belt transmission, automatic voltage regulator adjusting excitation and three great stages of digital frequency conversion.Present the bulking value of petrol and diesel oil generating set reduces greatly, even has realized portability owing to adopt the permanent magnet generator and the digitial controller of high power density, and the quality of output electric energy has also had significantly raising before.Permanent magnet generator is the important component part of whole petrol and diesel oil generating set, and its volume, weight, efficient, torque ripple etc. are directly connected to portability, efficient and the noise level of whole machine set system.Therefore improve the performance of the permanent magnet generator in the unit, especially increase its power density to reduce volume, weight, improve its efficient, reducing its torque ripple is the key point of further improving petrol and diesel oil generating set performance with vibration and the noise level that reduces system.
The winding construction of the magneto alternator in the petrol and diesel oil generating set mostly adopts common centralized winding or conventional distributed winding.The end of common centralized winding is shorter, so the resistance of winding is less, and the copper loss of generator is less; And coiling is convenient, can adopt the automatic coil winding machine coiling, is easy to volume production.But the electromotive force first-harmonic winding factor of common centralized winding lower (generally having only 0.866), this has limited the power density of generator to a certain extent.The harmful effect (winding factor of 5,7 subharmonic is higher) that common concentrated winding also can't weaken in the electromotive force 5 times and 7 subharmonic bring can cause the pulsation of bigger cogging torque and additional torque.If the employing distributed winding, being aided with suitable short distance can greatly reduce high order when keeping the first-harmonic winding factor very high, the winding factor of 5,7 subharmonic especially, thus improve the sinusoidal degree of generator output voltage, and reduce torque pulsation.But the end of this winding is very long, and resistance is bigger, thereby causes copper loss height, the efficient of generator low.Under the situation that does not adopt processing modes such as the oblique utmost point or skewed slot, use the cogging torque of generator of this winding also very high.This winding is not easy to the mechanization rule owing to cross over several teeth, is difficult for volume production, and processing cost is higher.
The utility model content
The utility model purpose: at the problem and shortage that above-mentioned prior art exists, the purpose of this utility model provides a kind of modularization permanent-magnetism synchronous generator, and this motor can solve shortcomings such as traditional magneto alternator cogging torque is big.Simultaneously, owing to adopt special centralized winding, this kind generator can improve the sinusoidal degree of output voltage waveforms greatly, reduces the generator copper loss, improves the power density of generator.
Technical scheme: for achieving the above object, the technical solution of the utility model is a kind of modularization permanent-magnetism synchronous generator, comprise rotor yoke, permanent magnet, threephase stator winding and stator core, wherein permanent magnet is mounted on the inner surface of rotor yoke equably, the sheet number of the stator gear ratio permanent magnet of stator core is many two, and available combination has 10 utmost points, 12 grooves, 16 utmost points, 18 grooves, 22 utmost points, 24 grooves ... by that analogy; Be coated with layer slot insulator on the described stator tooth, the threephase stator winding is outside layer slot insulator; The stator tooth of described stator core evenly is divided into six parts, and every phase winding occupies wherein relative two parts, on the groove of correspondence, is wound with the out-phase winding in six grooves between only adjacent two parts, the equal same phase winding of coiling in all the other grooves.
The structure of rotor yoke is an outer-rotor structure, and the order that mounts permanent magnet is that N-S replaces mutually.
The threephase stator winding is centralized, and an end of every phase winding links together, and the other end is drawn the electric output interface as generator.
This modularization permanent-magnetism synchronous generator also comprises the rotor axle sleeve that has keyway, and generator amature links to each other with the rotating shaft of petrol and diesel oil machine by this keyway, and fixes by keyway.
Beneficial effect: the utlity model has following beneficial effect: at first, adopt outer-rotor structure, permanent magnet is mounted on the inner surface of rotor core, and the centrifugal force in the time of can utilizing the rotor high-speed rotation prevents that permanent magnet from flying ease and damaging.Compare with the mode of other fixed permanent magnet (driving dovetail groove etc. as on buried, the internal rotor), this kind method cost has that cost is low, the advantage of easy processing.Simultaneously, the stator openings of the permanent magnet generator of outer-rotor structure outwardly, the coil winding machine of being more convenient for rolls off the production line, and also is beneficial to simultaneously the rotor permanent magnet heat radiation.Secondly, owing to adopted special number of teeth groove to count fit system and winding configuration, this kind generator is compared with the centralized winding magneto alternator of tradition, have first-harmonic winding factor height, electricity/the harmonics of magnetic force content low, send the sinusoidal degree advantages of higher of voltage; Compare with distributed winding magneto alternator, have advantages such as winding overhang is short, resistance is little, copper loss is low.Simultaneously, special number of teeth groove number cooperates, and has also reduced the cogging torque of generator greatly, can improve the generating set traveling comfort.At last, this kind generator can be processed by sub-module, and this is significant when making heavy-duty generator.
Description of drawings
Fig. 1 is the structural representation of the utility model 16 utmost points 18 channel mould blocking permanent magnet generator embodiment;
Fig. 2 is the cutaway view of the utility model rotor;
Fig. 3 is the utility model developed winding diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand these embodiment only be used to the utility model is described and be not used in the restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present utility model.
As depicted in figs. 1 and 2, a kind of modularization permanent-magnetism synchronous generator comprises the rotor yoke 1 of external collection, the rare-earth permanent magnet 2 that is mounted on rotor inner surface, stator core 4 and three phase windings 3 and rotor axle sleeve 5 compositions.Rare-earth permanent magnet 2 is evenly distributed in the rotor yoke inner surface, and a slice permanent magnet is arranged under each pole-face.Stator gear ratio rotor number of poles also is a rotor permanent magnet sheet number many two.Be surrounded by layer slot insulator on the stator tooth, stator winding is outside layer slot insulator.Coil was carved fixing after coiling finished by groove.Fig. 1 has illustrated the coiling mode of stator winding with the form of sign.If positive sign represent in this half groove winding around to for vertical paper inside, then negative sign represent in corresponding half groove winding around to for vertical paper outside.Fig. 3 then is detailed developed winding diagram, and visible every auxiliary winding is centralized.One end of every phase winding (x, y, z) links together, and the other end (u, v, w) is drawn the electric output interface as generator, to form star-star connection, offsets triple harmonic current.
Have keyway on the rotor axle sleeve 5, generator amature links to each other with the rotating shaft of petrol and diesel oil machine by this keyway, and fixes by key.Stator 4 is mounted on the support of unit by bolt via eight screws on it.The center line that will guarantee rotor axle sleeve, the rotating shaft of petrol and diesel oil machine, stator during installation is on same straight line.
Modularization permanent-magnetism synchronous generator with 16 utmost points, 18 grooves is an example, the order of connection of its winding can be expressed as A ' AA ' B ' BB ' C ' CC ' A ' AA ' B ' BB ' C ' CC ', wherein A, B, C represent the winding of three phases respectively, ' represent on this tooth around the induced potential of winding for oppositely.This winding arrangement mode can more clearly be represented with the developed winding diagram among Fig. 3.
This kind winding is centralized winding, has inherited the advantage that centralized winding is convenient to process, the end is little.Adopt this kind winding to make generating trough/number of poles simultaneously, improved the sinusoidal degree of electromotive force, reduced cogging torque than being mark.
During actual the manufacturing, the stator of this generator can be divided into six manufacturings, and each module processes respectively behind the rule again that splicing is combined together.
Claims (4)
1. modularization permanent-magnetism synchronous generator, comprise rotor yoke (1), permanent magnet (2), threephase stator winding (3) and stator core (4), it is characterized in that: permanent magnet (2) is arranged on the inner surface of rotor yoke (1), the sheet number of the stator gear ratio permanent magnet (2) of stator core (4) many two; Be coated with layer slot insulator on the stator tooth of described stator core (4), threephase stator winding (3) is outside layer slot insulator; The stator tooth of described stator core (4) evenly is divided into six parts, and every phase winding occupies wherein relative two parts, on the groove of correspondence, is wound with the out-phase winding in six grooves between only adjacent two parts, the equal same phase winding of coiling in all the other grooves.
2. according to the described modularization permanent-magnetism synchronous generator of claim 1, it is characterized in that: the structure of described rotor yoke (1) is an outer-rotor structure, and the order that mounts permanent magnet (2) is that N-S replaces mutually.
3. according to the described modularization permanent-magnetism synchronous generator of claim 1, it is characterized in that: described threephase stator winding (3) is centralized, and an end of every phase winding links together, and the other end is drawn the electric output interface as generator.
4. according to the described modularization permanent-magnetism synchronous generator of claim 1, it is characterized in that: also comprise the rotor axle sleeve (5) that has keyway, generator amature links to each other with the rotating shaft of petrol and diesel oil machine by this keyway, and fixes by keyway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205544733U CN201813292U (en) | 2010-09-29 | 2010-09-29 | Modular permanent magnet synchronous generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205544733U CN201813292U (en) | 2010-09-29 | 2010-09-29 | Modular permanent magnet synchronous generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201813292U true CN201813292U (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205544733U Expired - Fee Related CN201813292U (en) | 2010-09-29 | 2010-09-29 | Modular permanent magnet synchronous generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201813292U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951105A (en) * | 2010-09-29 | 2011-01-19 | 东南大学 | Modularized permanent magnet synchronous generator |
-
2010
- 2010-09-29 CN CN2010205544733U patent/CN201813292U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951105A (en) * | 2010-09-29 | 2011-01-19 | 东南大学 | Modularized permanent magnet synchronous generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20130929 |