CN2054227U - Synchronous generator with low harmonic winding - Google Patents
Synchronous generator with low harmonic winding Download PDFInfo
- Publication number
- CN2054227U CN2054227U CN 89205898 CN89205898U CN2054227U CN 2054227 U CN2054227 U CN 2054227U CN 89205898 CN89205898 CN 89205898 CN 89205898 U CN89205898 U CN 89205898U CN 2054227 U CN2054227 U CN 2054227U
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- winding
- synchronous generator
- stator
- turns
- low harmonic
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- Expired - Lifetime
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Abstract
The utility model relates to a synchronous generator with low harmonic winding which belongs to the field of electric rotating machinery. The synchronous generator with low harmonic winding is characterized in that the stator winding which is embedded in a stator slot is of concentric type with unequal turns. In the same pole phase group, all the coils have unequal turns, while the total number of turns on the upper layer and the lower layer in each slot can be equal so as to reach the purpose of weakening or eliminating noxious harmonic. Compared with the electric generator that has the same specification and adopts lap winding structure, the utility model can save raw materials by 8%-18%, enhance the motor efficiency by 0.5-1%, and lower the winding temperature rise by 8-18K, which lowers cost, saves energy, and prolongs service life.
Description
The utility model belongs to the electric rotating machine field, relates to a kind of synchronous generator of low harmonic wave winding construction.
People weaken for research and the winding type of the harmful harmonic wave of elimination motor windings is attached great importance to, and have proposed theoretical preferably scheme, as: a kind of positive chorded winding that comes harmonic carcellation by △-Y two parts windings in series or parallel connection.Positive chorded winding is remarkable for improving the motor performance effect, but because of neutral point is difficult to draw, and should not be used for synchronous generator, at present, the lap winding structure synchronous generator that electromechanics trade extensively adopts not only consume great deal of raw materials, and electric efficiency is also lower.
For fear of above-mentioned weak point, the utility model provides a kind of production technology simple, saves material, and improves electric efficiency, reduces the low humorous wave winding synchronous generator of winding temperature rise.
For achieving the above object, in conjunction with the accompanying drawings feature of the present utility model is described.
Fig. 1 is low, and humorous wave winding connects schematic diagram (a unit motor A phase).
Fig. 2 hangs down humorous wave winding synchronous generator structural representation.
Among the figure: 1 stator core, 2 radial ventilation grooves, 3 low harmonic wave stator winding.
As shown in Figure 2, low harmonic winding synchronous generator is characterised in that the stator winding that is embedded in the stator slot is the concentric type unequal-turn winding that specific turn ratio distributes, it is the reasonably combined number of turn that is near each groove of the axis of symmetry, thereby reduce to greatest extent the amplitude of content and the weakening the harmonics of magnetic force of harmful harmonic wave in the magnetic potential, in a utmost point is organized mutually, each coil does not wait circle, distribute by particular requirement, but the levels total number of turns equates in every groove.
So-called by the particular requirement distribution, be when the stator winding levels number of turn is arranged by following several different turn ratioes, can obtain and cut down significantly so that eliminate the effect that is harmful to harmonic wave.
1, the stator winding levels regularity of distribution as shown in Figure 1.When each turns ratio is a:b:c:d=6.078114:4.663901:2.931851:1 in a utmost point is organized mutually, 5,7,11,13,17,19,29,31 ... subharmonic is all eliminated, and the approximate integer value of the actual turn ratio can be 6:4:3:1 or 5:4:2:1.
2, when each turns ratio was with a:b:c:d=0.5:0.8164966:0.5773503:0.2988585 in a utmost point is organized mutually, 5,7,11,13,17,19,29,31 subharmonic were all eliminated.The actual turn ratio is determined desirable approximate integer value 3:5:3:1.Coil spread: 1-13 a circle, 2-12 b circle, 3-11 c circle, 4-10 d circle.
3, when span y=1～11, when each turns ratio was a:a:b:b=0.866025:0.866025:1:1 in a utmost point is organized mutually, 5,7,17,19 subharmonic were eliminated.The desirable approximate integer value of the actual turn ratio is a:b=3:4,7:8,14:16 ...
Advantage of the present utility model: because harmful harmonic wave weakens significantly or eliminates, improved mmf wave, reduced stray loss, improved electric efficiency, reduced winding temperature rise, reduced voltage-form distortion rate.The utility model shortens than stator, the rotor core length of same specification lap winding generator, and radial ventilation groove number reduces 1-2, saves material.
Embodiment:
1, TFX355N-6 160KW synchronous generator adopts low harmonic wave winding construction, and the number of turn during every utmost point is organized mutually is distributed as: span 1-12 6 circles, 2-11 4 circles, 3-10 3 circles, 4-9 1 circle, every groove 7 circles.Shorten under the 40mm situation at stator, rotor core, the requirement of main performance index conformance with standard, efficient, vibration still are better than the lap winding motor, and its performance index are as shown in the table,
2, TFX355N
2-6 200KW synchronous generators adopt double-layer concentric not wait the circle winding, span 1-12 5 circles, and 2-11 4 circles, 3-10 2 circles, 4-9 1 circle, every groove 6 circles, its core length shortens 75mm than lap winding motor, has reduced twice radial ventilation groove.
Techno-economic effect: low humorous wave winding synchronous generator is compared with the lap winding motor, and effect is remarkable.
Example: 160KW hangs down humorous wave winding synchronous generator, saves 96.25 kilograms of silicon steel sheets for every, 1.05 kilograms of electromagnetism copper cash, 46.27 kilograms of sheet metals, 0.88 kilogram of copper amortisseur bar, 0.9 kilogram of insulating material, year economize on electricity 4390KWh.
200KW hangs down humorous wave winding synchronous generator, saves 174 kilograms of silicon steel sheets for every, 11.1 kilograms of electromagnetism copper cash, 83.9 kilograms of sheet metals, 1.61 kilograms of copper amortisseur bars, 1.4 kilograms of insulating material, year economize on electricity 5430KWh.
Adopt low humorous wave winding can make motor save effective raw material 8-18%, electric efficiency improves 0.5～1%, and winding temperature rise reduces by 8～18K.
Claims (4)
1, low humorous wave winding synchronous generator comprises stator, rotor, and the stator winding that it is characterized in that being embedded in the stator slot is the concentric type unequal-turn winding, and in a utmost point was organized mutually, each coil did not wait circle, but the levels total number of turns can equate in every groove.
2, synchronous generator according to claim 1 is characterized in that stator winding structure can be following several different turn ratio, i.e. 6:4:3:1 by specific turn ratio distribution; 5:4:2:1; 3:5:3:1.
3,, it is characterized in that each turns ratio is 3:4 in a utmost point is organized mutually, 7:8,14:16 when span y=1～11 according to claim 1,2 described synchronous generators.
4, synchronous generator according to claim 1 is characterized in that iron core radial ventilation slot-number ratio same specification lap winding generator reduces 1～2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89205898 CN2054227U (en) | 1989-08-11 | 1989-08-11 | Synchronous generator with low harmonic winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89205898 CN2054227U (en) | 1989-08-11 | 1989-08-11 | Synchronous generator with low harmonic winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2054227U true CN2054227U (en) | 1990-03-07 |
Family
ID=4863042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89205898 Expired - Lifetime CN2054227U (en) | 1989-08-11 | 1989-08-11 | Synchronous generator with low harmonic winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2054227U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6930429B2 (en) | 2000-06-14 | 2005-08-16 | Black & Decker Inc. | Motor armature having distributed windings for reducing arcing |
| US7274126B2 (en) | 2000-06-14 | 2007-09-25 | Black & Decker Inc. | Motor armature having distributed windings for reducing arcing |
| CN1901333B (en) * | 2006-07-24 | 2010-05-12 | 王怀林 | Single winding multiple pole double speed motor non-uniform turn winding |
| CN101165992B (en) * | 2006-10-16 | 2011-04-06 | 王怀林 | q=3-8 concentric type variable crosssection winding, small and big groove stator piece and winding parameter |
-
1989
- 1989-08-11 CN CN 89205898 patent/CN2054227U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6930429B2 (en) | 2000-06-14 | 2005-08-16 | Black & Decker Inc. | Motor armature having distributed windings for reducing arcing |
| US7000307B2 (en) | 2000-06-14 | 2006-02-21 | Black & Decker Inc. | Method for reducing arcing for motor armature with distributed windings |
| US7051420B2 (en) | 2000-06-14 | 2006-05-30 | Black & Decker Inc. | Method for manufacturing an armature of an electric motor |
| US7155811B2 (en) | 2000-06-14 | 2007-01-02 | Black & Decker Inc. | Method for manufacturing an armature of an electric motor |
| US7274126B2 (en) | 2000-06-14 | 2007-09-25 | Black & Decker Inc. | Motor armature having distributed windings for reducing arcing |
| CN1901333B (en) * | 2006-07-24 | 2010-05-12 | 王怀林 | Single winding multiple pole double speed motor non-uniform turn winding |
| CN101165992B (en) * | 2006-10-16 | 2011-04-06 | 王怀林 | q=3-8 concentric type variable crosssection winding, small and big groove stator piece and winding parameter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |