CN1295848C - High-efficiency power generator - Google Patents
High-efficiency power generator Download PDFInfo
- Publication number
- CN1295848C CN1295848C CNB011068191A CN01106819A CN1295848C CN 1295848 C CN1295848 C CN 1295848C CN B011068191 A CNB011068191 A CN B011068191A CN 01106819 A CN01106819 A CN 01106819A CN 1295848 C CN1295848 C CN 1295848C
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- China
- Prior art keywords
- utmost point
- rotating shaft
- rotor
- pole
- point pawl
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- 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 - Fee Related
Links
- 230000005284 excitation Effects 0.000 claims abstract description 5
- 210000000078 claw Anatomy 0.000 abstract 5
- 230000004907 flux Effects 0.000 description 12
- 238000004804 winding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004744 fore-foot Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The present invention relates to an electric generator with high efficiency. A stator 1 of the electric generator is arranged on a generator body 4, and a rotor 5 is arranged in the stator 1, wherein a rotating shaft 6 is provided with pole claws 2, 9 (S pole and N pole) by the rotor 5; an excitation supporting frame and a coil 3 are arranged between the pole claws and the rotating shaft 6; the radial section of each pole claw 2, 9 along the rotating shaft 6 is in the shape of double curves; each pole claw 2, 9 on the external cylindrical surface of the rotor is in a sine shape; the contour line of the surface of each pole claw facing the rotating shaft (6) is in the shape of a parabolic curve. The present invention has the advantages that the magnetic leakage coefficient is reduced to 1.06 to 1.08 from 1.3 to 1.4; the efficiency is increased by 10 to 15%; for example, the efficiency of a 3-kilowatt electric generator reaches 92.7%, and the efficiency of a 5-kilowatt electric generator reaches 94%; the present invention is 2.8th power orders to input mechanical power, and is particularly suitable for generating electric power with wind power and waves; the present invention has a wide characteristic, and the rotating speed characteristic can main a high efficiency within a range of 0.5 to 1.5 times of a rated rotating speed; the magnetic leakage is little, and the consumption is little, so the temperature rise is low.
Description
Affiliated technical field
The present invention relates to a kind of generator, particularly a kind of brushless self-excited generator.
Background technology
Chinese patent publication number CN2277595Y discloses a kind of AC generator for vehicle, it is made up of stator, rotor, support etc., the shape that is characterized in the utmost point pawl of rotor portion makes an appointment with half to constitute by the truncated cone of cutting open by circular arc along the truncated cone central shaft, utmost point pawl outer surface is an arc, be connected together the cylindrical that constitutes rotor, inner surface promptly is the conical surface of truncated cone.Because it is staggered with the S level that whole utmost point pawl is the N level, the big or small relevant performance that directly influences generator of the leakage field of utmost point pawl side is as the efficient of generator, heating, low-speed performance etc.The leakage field size depends on the magnetic-path length between utmost point pawl again, and the path length leakage field is little, and the short leakage field in path is big.If under the certain situation of utmost point pawl logarithm, only consider to strengthen magnetic-path, just strengthen the distance between utmost point pawl, must reduce the sectional area of utmost point pawl so, the sectional area of utmost point pawl reduces, and then magnetic flux must reduce, and magnetic flux reduces, and influences the relevant performances such as efficient of generator again.This is a pair of contradiction for magnetic flux and leakage field, and prior art can't be handled above-mentioned contradiction well at present, and magnetic leakage factor is all between 1.3-1.4.Above-mentioned patent is because the shape of utmost point pawl is made an appointment with half by the truncated cone of cutting open by circular arc along the truncated cone central shaft, leakage path between utmost point pawl is short, leakage field is big, and the leakage field of utmost point pawl minimum point can not be reduced to zero, therefore this generator efficiency is not high, temperature rise, low-speed performance is undesirable.
The objective of the invention is provides the generator that a kind of leakage field is little, magnetic flux is big for overcoming above the deficiencies in the prior art.
Summary of the invention
The present invention finishes as follows, its stator is installed on the body, rotor is installed in the stator, utmost point pawl (S, the N utmost point) is installed in the rotating shaft of rotor, excitation carriage and coil are installed between the rotating shaft of utmost point pawl, it is characterized in that: utmost point pawl is a hyperbola along the radial section of rotating shaft, is parabola shaped along the axial cross section of rotating shaft, and utmost point pawl is shaped as sinusoid on the outer cylinder surface of rotor.
Utmost point pawl radial section of the present invention adopts hyperbola, and the balance point that has found both to take into account between magnetic flux and leakage field has solved this contradiction effectively.Hyperbola eccentricity e＞1, the size of dehiscing is relevant with the involute slope, distance between utmost point pawl is near more from the axle center, distance is big more, leakage field is more little, leakage field between the minimum point pole pawl of the hyperbola section utmost point pawl N-S utmost point is zero, and between each utmost point pawl and the leakage field of utmost point pawl minimum point be reduced to minimum, make utmost point pawl sectional area can fully guarantee the needs of magnetic flux again simultaneously.Therefore, the present invention compared with prior art has: the efficient height, power is big, magnetic leakage factor is low, the smooth advantage such as broad of rotary speed property.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is useful flux of the present invention path;
Fig. 3 is the radial section view of Figure 1A-A utmost point pawl;
Fig. 4 is the longitudinal cross-sectional view of utmost point pawl;
Fig. 5 is the outer cylinder surface expanded view of rotor;
Embodiment
Further specify technical scheme of the present invention below in conjunction with accompanying drawing.Referring to Fig. 1,2,3,4, the present invention is made up of body (4), stator (1), rotor (5), excitation carriage and coil (3), stator (1) is installed in the body (4), rotor (5) is installed in the stator (1), excitation carriage and coil are installed (3) between utmost point pawl (2) and rotating shaft (6), rotor (5) is that fore paw and rear polar grab formation are installed in the rotating shaft (6), and each S (N) utmost point pawl is a hyperbola along the radial section of rotating shaft.When magnet exciting coil had electric current to pass through, its path of effective main flux that is produced was: rotor (5), and--------------main air gap (10)--right utmost point pawl (2)--rotor (5) yoke constitutes magnetic loop to main air gap (10) to left utmost point pawl (9) to the auxilliary air gap (8) that adds to carriage (3) to the auxilliary air gap (7) that adds in stator core (1).When rotor rotated, magnetic field was skimmed over from stator winding and is produced three symmetrical electromotive forces.The main leakage field of generator is the magnetic leakage between utmost point pawl side, because the distance between hyperbola utmost point pawl side is near more from the axle center, distance is big more, and leakage field is more little, and nearest summit leakage field is bordering on zero from the axle center.Leakage field between whole utmost point pawl side is more little, and limited work master magnetic is fully used, so the performance of generator improves.
See Fig. 5, utmost point pawl is shaped as sinusoid on the outer cylinder surface of rotor.Because the magnetic flux of main air gap is a sinusoid, induced potential also is near sinusoid in the stator winding, therefore, utmost point pawl outer surface is designed to sinusoid, can be that magnetic flux distribution is more reasonable, in the end and inner magnetic leakage be decreased to minimum, make its performance better.In addition, when magnetic flux is examined for sinusoid in utmost point pawl surface, can be simplified to trapezoidal area and consider that trapezoidal going to the bottom is the bottom width of sine, trapezoidal upper base equals 0.273 times of sinusoidal bottom width, and trapezoidal higher position is sinusoidal amplitude.
Utmost point pawl is in the face of the inner surface of rotating shaft (6), and its outline line is a parabola.It is big that the utmost point pawl of this shape has a volume, can avoid magnetic saturation, increases the magnetic flux in the utmost point pawl effectively.
See Fig. 5, left utmost point pawl of the present invention (9) and the interlaced arrangement of right utmost point pawl (2) also link into an integrated entity.It is integrally welded that both can pass through non-magnet material (11).
The present invention is compared with prior art: 1, the coefficient of losses leakage drops to 1.06-1.08 by 1.3-1.4; 2, efficient improves 10-15%, as the 3kw generator efficiency reach 92.7%, the efficient of 5kw generator reaches 94%; 3, it becomes 2.8 powers with the input mechanical output, is specially adapted to wind-force, seawave power generation; 4, have wide characteristic, rotary speed property can both keep high efficient in 0.5-1.5 times of rated speed scope; 5, leakage field is few, and the few inevitable temperature rise of consumption is low.
Claims (2)
1, a kind of generator, its stator (1) is installed on the body (4), rotor (5) is installed in the stator (1), in the rotating shaft (6) of rotor (5) utmost point pawl is installed, excitation carriage and coil (3) are installed between utmost point pawl and the rotating shaft (6), it is characterized in that: utmost point pawl is a hyperbola along the radial section of rotating shaft, is parabola shaped along the axial cross section of rotating shaft, and utmost point pawl is shaped as sinusoid on the outer cylinder surface of rotor.
2, a kind of generator according to claim 1 is characterized in that: left utmost point pawl (9) and the interlaced arrangement of right utmost point pawl (2) also link into an integrated entity by non-magnet material (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011068191A CN1295848C (en) | 2001-01-08 | 2001-01-08 | High-efficiency power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011068191A CN1295848C (en) | 2001-01-08 | 2001-01-08 | High-efficiency power generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1362777A CN1362777A (en) | 2002-08-07 |
| CN1295848C true CN1295848C (en) | 2007-01-17 |
Family
ID=4655787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011068191A Expired - Fee Related CN1295848C (en) | 2001-01-08 | 2001-01-08 | High-efficiency power generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1295848C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5569109B2 (en) * | 2009-04-22 | 2014-08-13 | 株式会社デンソー | AC generator for vehicles |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4972114A (en) * | 1987-02-11 | 1990-11-20 | Robert Bosch Gmbh | Alternating-current generator with claw pole rotor |
| CN1056192A (en) * | 1990-04-27 | 1991-11-13 | 长沙铁道学院 | Contactless claw pole motor |
| CN2240212Y (en) * | 1995-07-25 | 1996-11-13 | 地方国营象山县渔业机电厂 | Marine claw-pole brushless silicon rectifying generator |
| CN2472400Y (en) * | 2001-01-08 | 2002-01-16 | 湖南东地科技发展有限公司 | High effective power generator |
-
2001
- 2001-01-08 CN CNB011068191A patent/CN1295848C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4972114A (en) * | 1987-02-11 | 1990-11-20 | Robert Bosch Gmbh | Alternating-current generator with claw pole rotor |
| CN1056192A (en) * | 1990-04-27 | 1991-11-13 | 长沙铁道学院 | Contactless claw pole motor |
| CN2240212Y (en) * | 1995-07-25 | 1996-11-13 | 地方国营象山县渔业机电厂 | Marine claw-pole brushless silicon rectifying generator |
| CN2472400Y (en) * | 2001-01-08 | 2002-01-16 | 湖南东地科技发展有限公司 | High effective power generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1362777A (en) | 2002-08-07 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Hunan Dongdi Sci-Tech Devpt Co., Ltd. Document name: Notification before expiration of term |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: WANG YEPING Free format text: FORMER OWNER: HUNAN DONGDI SCIENCE AND TECHNOLOGY DEVELOPEMENT CO., LTD. Effective date: 20060721 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20060721 Address after: 410075 Finance Office of No. 22 Railway District, Shaoshan South Road, Hunan, Changsha, transferred to Wang Yeping Applicant after: Wang Yeping Address before: 410005 No. 154 South Hunan Road, Hunan, Changsha Applicant before: Hunan Dongdi Sci-Tech Devpt Co., Ltd. |
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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: 20070117 Termination date: 20200108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |