CN202494566U - Asynchronous generator and asynchronous motor mutual feedback system - Google Patents
Asynchronous generator and asynchronous motor mutual feedback system Download PDFInfo
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- CN202494566U CN202494566U CN2012200494968U CN201220049496U CN202494566U CN 202494566 U CN202494566 U CN 202494566U CN 2012200494968 U CN2012200494968 U CN 2012200494968U CN 201220049496 U CN201220049496 U CN 201220049496U CN 202494566 U CN202494566 U CN 202494566U
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Abstract
The utility model discloses an asynchronous generator and asynchronous motor mutual feedback system, and solves the technical problems that the frequency of an asynchronous generator is reduced and big impacts on a power grid is caused in start-up of a heavy load power in existing asynchronous generator and asynchronous motor mutual feedback systems. The mutual feedback system comprises a power grid (15), an asynchronous motor (1), and an asynchronous generator (6). The asynchronous motor (1) is in mechanical connection with a first tested gear box (3) through a first star transmission gear box (2), the output shaft of the first tested gear box (3) is in mechanical connection with the input shaft of the second tested gear box (4), the second tested gear box (4) is in mechanical connection with the asynchronous generator (6) through a second star transmission gear box (5), speed regulating shafts of the star transmission gear boxes are in mechanical connection with the output shaft of a speed regulating electrical machine, and the speed regulating electrical machine is electrically connected with a speed regulating converter. The test system of utility model has small impacts on the power grid when started up, and has advantages of easy operation and easy control.
Description
Technical field
The utility model relates to the mutual feedback system of a kind of generator and motor, the mutual feedback system of particularly a kind of asynchronous generator and asynchronous motor.
Background technology
In asynchronous generator and asynchronous motor mutual feedback system, when carrying out loading experiment, the frequency of asynchronous generator can significantly reduce, and the voltage after the reduction frequency can not satisfy the power requirement of asynchronous motor, and loading experiment can't normally be carried out.In addition, when bearing power was big, asynchronous generator and asynchronous motor are presented experimental system mutually can cause large impact to electrical network when starting, have a strong impact on the quality of electrical network.
Summary of the invention
The utility model provides a kind of asynchronous generator and asynchronous motor mutual feedback system, the frequency that has solved asynchronous generator in existing asynchronous generator and asynchronous motor mutual feedback system reduce and when the heavy load energetic start up to the electrical network big technical matters that impacts.
The utility model solves above technical matters through following technical scheme:
A kind of asynchronous generator and asynchronous motor mutual feedback system; Comprise electrical network; Electrical network is electrically connected with asynchronous motor through the asynchronous motor A.C. contactor; Electrical network is electrically connected with asynchronous generator through the asynchronous generator A.C. contactor; The input shaft of the output shaft of asynchronous motor and first star biography gear case is mechanically coupled together, and first star passes the output shaft and first of gear case by the input shaft mechanical connection of examination gear case, and first quilt tries the output shaft and second of gear case by the input shaft mechanical connection of examination gear case; Second is mechanically coupled together by the input shaft of the output shaft of examination gear case and second star biography gear case; Second star passes the output shaft of gear case and the input shaft mechanical connection of asynchronous generator, and the speed governing axle of first star biography gear case and the output shaft of first buncher are mechanically coupled together, and first buncher is electrically connected with the first speed governing current transformer; The speed governing axle of second star biography gear case and the output shaft of second buncher are mechanically coupled together, and second buncher and the second speed governing current transformer are electrically connected.
Described asynchronous motor is a threephase asynchronous, and described asynchronous generator is a three phase induction generator.
Little when the pilot system of the utility model starts to the electrical network impact, control easy.
Description of drawings
Fig. 1 is the general structure synoptic diagram of the utility model.
Embodiment
A kind of asynchronous generator and asynchronous motor mutual feedback system; Comprise electrical network 15; Electrical network 15 is electrically connected with asynchronous motor 1 through asynchronous motor A.C. contactor 13; Electrical network 15 is electrically connected with asynchronous generator 6 through asynchronous generator A.C. contactor 14; The input shaft of the output shaft of asynchronous motor 1 and first star biography gear case 2 is mechanically coupled together, and first star passes the output shaft and first of gear case 2 by the input shaft mechanical connection of examination gear case 3, and first quilt tries the output shaft and second of gear case 3 by the input shaft mechanical connection of examination gear case 4; Second is mechanically coupled together by the input shaft of the output shaft of examination gear case 4 and second star biography gear case 5; Second star passes the output shaft of gear case 5 and the input shaft mechanical connection of asynchronous generator 6, and the speed governing axle 7 of first star biography gear case 2 and the output shaft of first buncher 8 are mechanically coupled together, and first buncher 8 is electrically connected with the first speed governing current transformer 9; The speed governing axle 10 of second star biography gear case 5 and the output shaft of second buncher 11 are mechanically coupled together, and second buncher 11 and the second speed governing current transformer 12 are electrically connected.
Described asynchronous motor 1 is a threephase asynchronous, and described asynchronous generator 6 is a three phase induction generator.
The star of being selected for use passes gear case can drive the low power frequency conversion motor through the miniwatt current transformer, drives the speed governing axle and among a small circle, adjusts the gear case output speed.
At first regulate the rotating speed of asynchronous motor 1 and asynchronous generator 6, both are all rotated under its rated speed, insert two asynchronous machines in the electrical network this moment, makes its level and smooth electric motor state that starts to, and reduces asynchronous machine and start the impact to electrical network.Improve the rotating speed of asynchronous generator 6, make its rotational speed be higher than its rated speed, this moment, asynchronous generator 6 was operated in the generator state, and energy feeds back to the electrical network from asynchronous generator 6.
Below be the working state of system of the utility model:
Asynchronous motor 1 is operated in electric motor state, from electrical network, absorbs electric energy, is converted into mechanical energy, is delivered to first star and passes on the gear case 2.First buncher 8 is the additional adjustment rotating speed of the first star-wheel gear case, has remedied the rotating speed reduction that asynchronous motor 1 causes owing to load increases.The first star-wheel gear case 2 is converted into the rotating speed that tested object needs with the rotating speed of asynchronous motor 1, and asynchronous motor 1 is remedied owing to load strengthens the rotating speed that loses, and guarantees that tested object one side has stable rotating speed, transfers loads to tested object.Tested object is delivered to the second star-wheel gear case 5 with mechanical load.The second star-wheel gear case 5 reverts to the asynchronous machine rotating speed with the rotating speed that tested object needs; And through second buncher 11 additional adjustment rotating speed on second star biography gear case 5; Make second star pass gear case 5 output speeds and be higher than asynchronous generator 6 synchronous rotational speeds, make asynchronous generator 6 be operated in the generator state.The asynchronous machine rotating speed exceeds its rated speed size and has determined to be added to load size on the tested object.Asynchronous generator 6 is converted into electric energy with mechanical energy and feeds back to electrical network.
Claims (2)
1. asynchronous generator and asynchronous motor mutual feedback system; Comprise electrical network (15); Electrical network (15) is electrically connected with asynchronous motor (1) through asynchronous motor A.C. contactor (13); Electrical network (15) is electrically connected with asynchronous generator (6) through asynchronous generator A.C. contactor (14); It is characterized in that; The input shaft of the output shaft of asynchronous motor (1) and first star biography gear case (2) is mechanically coupled together, and first star passes the output shaft and first of gear case (2) by the input shaft mechanical connection of examination gear case (3), and first quilt tries the output shaft and second of gear case (3) by the input shaft mechanical connection of examination gear case (4); Second is mechanically coupled together by the input shaft of the output shaft of examination gear case (4) and second star biography gear case (5); Second star passes the output shaft of gear case (5) and the input shaft mechanical connection of asynchronous generator (6), and the speed governing axle (7) of first star biography gear case (2) is mechanically coupled together with the output shaft of first buncher (8), and first buncher (8) is electrically connected with the first speed governing current transformer (9); The speed governing axle (10) of second star biography gear case (5) is mechanically coupled together with the output shaft of second buncher (11), and second buncher (11) is electrically connected with the second speed governing current transformer (12).
2. a kind of asynchronous generator according to claim 1 and asynchronous motor mutual feedback system is characterized in that, described asynchronous motor (1) is a threephase asynchronous, and described asynchronous generator (6) is a three phase induction generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200494968U CN202494566U (en) | 2012-02-16 | 2012-02-16 | Asynchronous generator and asynchronous motor mutual feedback system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200494968U CN202494566U (en) | 2012-02-16 | 2012-02-16 | Asynchronous generator and asynchronous motor mutual feedback system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202494566U true CN202494566U (en) | 2012-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200494968U Expired - Fee Related CN202494566U (en) | 2012-02-16 | 2012-02-16 | Asynchronous generator and asynchronous motor mutual feedback system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202494566U (en) |
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2012
- 2012-02-16 CN CN2012200494968U patent/CN202494566U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20150216 |
|
| EXPY | Termination of patent right or utility model |