CN101534039B - Single phase synchronous generator - Google Patents
Single phase synchronous generator Download PDFInfo
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- CN101534039B CN101534039B CN2009100742208A CN200910074220A CN101534039B CN 101534039 B CN101534039 B CN 101534039B CN 2009100742208 A CN2009100742208 A CN 2009100742208A CN 200910074220 A CN200910074220 A CN 200910074220A CN 101534039 B CN101534039 B CN 101534039B
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Abstract
The invention relates to a motor, in particular to a single phase synchronous generator, which solves the problem of voltage waveform distortion of the current single phase synchronous generators. The single phase synchronous generator comprises a stator and a stator winding; wherein, the stator winding is a two-layer lap winding with 72 slots and 6 poles, namely a two-layer 5/6 short coil winding, and the stator winding adopts 2/3 inserted slot lines which are counted by the upper edge of the winding coil in the slot under each magnetic pole, namely, each winding coil is counted by the upper edge; winding coils are embedded in 1-8 slots of 12 slots under each magnetic pole in sequence; winding coils under each magnetic pole are connected with each other in series to form a coil assembly. The 12 slots under each magnetic pole form the winding coil with specific spread pattern as follows: 1-6 slots are internally provided with both the upper edges and the lower edges; 7-8 slots are only internally provided with the upper edges, 9-10 slots are empty and 11-12 slots are only internally provided with the lower edges. The single phase synchronous generator immensely improves the voltage waveform. Meanwhile, empty slots exist under each pole, therefore, the ventilation and heat dispersion area of the stator core is widened.
Description
Technical field
The present invention relates to motor, be specially a kind of single phase synchronous generator.
Background technology
Compare with three-phase synchronous generator, the difficult point of powerful single phase synchronous generator design is that its armature reaction MMF is the pulsating magnetomotive force, negative phase-sequence magnetic field and harmonic field that it produces can cause voltage waveform distortion, in order to suppress the voltage waveform distortion that negative phase-sequence magnetic field and harmonic field cause, need the stator winding of single phase synchronous generator is carried out special design.The particularly powerful single phase synchronous generator of existing single phase synchronous generator is difficult to overcome the big problem of voltage waveform distortion.
Summary of the invention
The present invention provides a kind of single phase synchronous generator in order to solve the problem of existing single phase synchronous generator voltage waveform distortion.This single phase synchronous generator is by taking special armature winding structure, reach to improve the purpose of voltage waveform.
The present invention adopts following technical scheme to realize: single phase synchronous generator, comprise that stator and stator winding, stator winding are the bilayer of 72 grooves, 6 utmost points winding that changes, the described bilayer winding that changes is double-deck 5/6 short-chorded coil winding, and adopt 2/3 groove rule in the groove of stator winding under every magnetic pole in limit, winding coil upper strata, be that each winding coil is in the limit, upper strata, (72 grooves are divided by 6 utmost points in 12 grooves under every magnetic pole, every is extremely down 12 grooves) the 1-8 groove in be embedded with winding coil successively, each winding coil under every magnetic pole is connected mutually and is formed a coil groups.Because above-mentioned stator winding has adopted 5/6 short-chorded coil, therefore following 12 grooves of every magnetic pole have just formed the concrete spread pattern of following winding coil: promptly have limit, coil upper strata that the lower floor limit is also arranged in the 1-6 groove, have only the limit, upper strata in the 7-8 groove, the 9-10 groove is a dead slot, has only the lower floor limit in the 11-12 groove.
Single phase synchronous generator of the present invention has adopted the stator winding of special construction, its stator winding is 2/3 rule, as calculated, its stator winding is respectively Kp1=0.829357 at the breadth coefficient of first-harmonic, 3 subharmonic, 5 subharmonic, 7 subharmonic, Kp3=0, Kp5=-0.1778, Kp7=0.13645, can eliminate 3 subharmonic effectively, weaken 5,7 subharmonic; Simultaneously because stator winding has adopted double-deck short distance (5/6 short distance) winding, its winding coefficient also will multiply by chording factor again, when 5/6 short distance, the chording factor of winding is Kd1=sin (90 ° * 5/6)=0.96593, Kd5=0.258819, Kd7=0.258819, so the winding coefficient of stator winding is Kdp1=0.8011, Kdp3=0, Kdp5=-0.04602, Kdp7=0.03534.As can be seen, single phase synchronous generator of the present invention has effectively been eliminated 3 subharmonic in the voltage waveform by the structure of improving stator winding, has greatly weakened 5,7 subharmonic, has therefore greatly improved voltage waveform.Simultaneously, have dead slot extremely down because of every, strengthened the ventilation and heat area of stator core, providing under the prerequisite of certain ventilation quantity, ventilation effect is strengthened.
Description of drawings
Fig. 1 is a pair of stator winding expanded view under extremely of single phase synchronous generator of the present invention;
Embodiment
Single phase synchronous generator, comprise stator and stator winding, stator winding is 72 grooves, the bilayer of 6 utmost points winding that changes, the described bilayer winding that changes is that (so-called 5/6 short-chorded coil is meant that the short-chorded coil pitch is 5/6 of a full-pitched coil pitch to double-deck 5/6 short-chorded coil winding, 72 grooves, the pitch of the full-pitched coil of 6 utmost point windings is the 72/6=12 groove, the pitch of 5/6 short-chorded coil is 10 grooves), and adopt 2/3 groove rule in the groove of stator winding under every magnetic pole in limit, winding coil upper strata, be that each winding coil is in the limit, upper strata, (72 grooves are divided by 6 utmost points in 12 grooves under every magnetic pole, every is extremely down 12 grooves) the 1-8 groove in be embedded with winding coil successively, also promptly the 1-8 groove (being preceding 8 grooves) in 12 grooves under every magnetic pole is embedded with the limit, upper strata of winding coil, the lower floor limit of each winding coil embeds in the respective grooves by 5/6 short distance, and each winding coil under every magnetic pole is connected mutually and formed a coil groups.Like this, a pair of concrete arrangement mode such as the following table of extremely descending winding:
During concrete the use, according to the needs of single phase synchronous generator output voltage, each winding coil every magnetic pole under connect mutually form each coil groups can be parallel with one another or connect or parallel connection is in twos connected again.
Claims (1)
1. single phase synchronous generator, comprise stator and stator winding, stator winding is the bilayer of 72 grooves, 6 utmost points winding that changes, it is characterized by: the described bilayer winding that changes is double-deck 5/6 short-chorded coil winding, and adopt 2/3 groove rule in the groove of stator winding under every magnetic pole in limit, winding coil upper strata, be each winding coil in the limit, upper strata, be embedded with winding coil successively in the 1-8 groove in 12 grooves under every magnetic pole, each winding coil under every magnetic pole is connected mutually and is formed a coil groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100742208A CN101534039B (en) | 2009-04-21 | 2009-04-21 | Single phase synchronous generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100742208A CN101534039B (en) | 2009-04-21 | 2009-04-21 | Single phase synchronous generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101534039A CN101534039A (en) | 2009-09-16 |
| CN101534039B true CN101534039B (en) | 2011-11-09 |
Family
ID=41104481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100742208A Expired - Fee Related CN101534039B (en) | 2009-04-21 | 2009-04-21 | Single phase synchronous generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101534039B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104659992B (en) * | 2015-02-04 | 2017-08-04 | 华北电力大学 | A kind of speed asynchronous motor stator winding type of 6/8/12 pole simplex winding three |
| CN108768032B (en) * | 2018-06-19 | 2024-05-28 | 哈尔滨理工大学 | Stator winding of alternating current motor and end connection method |
-
2009
- 2009-04-21 CN CN2009100742208A patent/CN101534039B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101534039A (en) | 2009-09-16 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20170421 |
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| CF01 | Termination of patent right due to non-payment of annual fee |