CN205333820U - Double -fed asynchronous generator model test device - Google Patents
Double -fed asynchronous generator model test device Download PDFInfo
- Publication number
- CN205333820U CN205333820U CN201521139937.3U CN201521139937U CN205333820U CN 205333820 U CN205333820 U CN 205333820U CN 201521139937 U CN201521139937 U CN 201521139937U CN 205333820 U CN205333820 U CN 205333820U
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- asynchronous generator
- bus
- alternating current
- motor
- generator
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- Control Of Eletrric Generators (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The utility model discloses a double -fed asynchronous generator model test device, include: the alternating current -direct current generating line, two quadrant converters, the rectifier, the dc -to -ac converter, asynchronous generator, dc motor, ampere meter and power sensor, two quadrant converters are used for the three -phase electricity of electric wire netting to vary into the alternating current of corresponding frequency, for asynchronous generator rotor excitation, the rectifier is used for becoming the direct current with the alternating current rectification, inserts the dc bus, the dc -to -ac converter is used for becoming the alternating current with the direct current contravariant, inserts the electric wire netting, dc motor is used for draging the generator rotor rotation as prime mover, asynchronous generator is as the generator for send three -phase alternating current, measuring device is used for measuring the power sum current value. The utility model discloses it is simple reliable, again can be with unnecessary electric energy feedback electric wire netting when can be used to to test each item performance index of asynchronous generator.
Description
Technical field
This utility model relates to electrical motor gearshift generating, electronic power rectification, inversion field, particularly relates to a kind of double-fed asynchronous generator model measurement device。
Background technology
In the mensuration of the current parameter of electric machine, the experiment such as short circuit experiment and no load test can be relatively easy to carry out, but measuring the efficiency comparison difficulty of asynchronous generator, traditional loss analysis method needs indirectly to obtain by the parameter of short circuit and no-load test, not directly perceived also inconvenient。This patent is by directly measurement DC generator output is as the input power of synchronous generator, in conjunction with the output of power meter measures, it is possible to draw the parameter such as efficiency of synchronous motor。
Meanwhile, under guaranteeing the requirement carrying out asynchronous generator experiment, want to again process unnecessary three-phase alternating current, improve energy utilization rate。The electricity that therefore, it can send asynchronous generator is sent back in electrical network。But during Rotational Speed of Asynchronous Motor difference, output current frequency is also different, it is impossible to be directly incorporated into electrical network, it is therefore desirable to asynchronous machine exporting electric current through frequency conversion is to send into electrical network after power frequency。
Utility model content
For solving the problems referred to above, this patent provides the double-fed asynchronous generator model measurement device of a kind of simple in construction, test simple, intuitive。
This utility model is achieved through the following technical solutions:
A kind of double-fed asynchronous generator model measurement device, including ac bus, dc bus, two quadrant converters, commutator, inverter, asynchronous generator, dc motor, ammeter, power sensor and shaft coupling,
Described two quadrant converters connect ac bus and asynchronous generator, for the three-phase alternating current of electrical network converts to the alternating current of respective frequencies, for asynchronous generator rotor-exciting；
Described commutator is positioned between asynchronous generator stator winding and dc bus, for the three-phase alternating current of sensing on asynchronous generator stator winding is rectified into direct current；
Described inverter connects dc bus and ac bus, for DC inverter becomes the alternating current of mains frequency, feedback grid；
Described ammeter is separately positioned between dc bus and described inverter and between dc bus and described two quadrant converters, is used for measuring electric current；
The output shaft of described dc motor is coaxially connected with asynchronous generator with power sensor by shaft coupling, and being used for driving asynchronous generator is electric energy by changes mechanical energy；Described power sensor is for measuring the output of dc motor, i.e. the input power of asynchronous generator, described dc motor, power sensor and asynchronous generator are each attached on pedestal。
The technical scheme that this utility model provides provides the benefit that:
When rotor speed changes, the AC rectification indefinite by the frequency produced by stator becomes unidirectional current, being reverse into the alternating current of mains frequency again through inverter, access electrical network smoothly, wherein the combined effect of two quadrant converters and commutator, inverter realizes the feedback of electric energy；Meanwhile, it is also possible to the property indices of test asynchronous generator。
Accompanying drawing explanation
Fig. 1 is double-fed asynchronous generator model measurement device electrical structure diagram。
Fig. 2 is asynchronous generating crane platform structure figure。
Shown in figure it is: 1-two quadrant converter；2-commutator；3-inverter；4-asynchronous generator；5-ammeter；6-dc bus；7-ac bus；8-dc motor；9-shaft coupling；10-power sensor；11-pedestal。
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, this utility model embodiment is described in further detail:
As it is shown in figure 1, a kind of double-fed asynchronous generator model measurement device, including ac bus 7, dc bus 6, two quadrant converter 1, commutator 2, inverter 3, asynchronous generator 4, dc motor 8, ammeter 5, power sensor 10 and shaft coupling 9,
Described two quadrant converters 1 connect ac bus 7 and asynchronous generator 4, for the three-phase alternating current of electrical network converts to the alternating current of respective frequencies, for asynchronous generator 4 rotor-exciting；
Described commutator 2 is positioned between asynchronous generator 4 stator winding and dc bus 6, for the three-phase alternating current of sensing on asynchronous generator 4 stator winding is rectified into direct current；
Described inverter 3 connects dc bus 6 and ac bus 7, for DC inverter becomes the alternating current of mains frequency, feedback grid；
Described ammeter 5 is separately positioned between dc bus 6 and described inverter 3 and between dc bus 6 and described two quadrant converters 1, is used for measuring electric current；
As in figure 2 it is shown, the output shaft of described dc motor 8 is coaxially connected with asynchronous generator 4 with power sensor 10 by shaft coupling 9, being used for driving asynchronous generator 4 is electric energy by changes mechanical energy；Described power sensor 10 is for measuring the output of dc motor 8, i.e. the input power of asynchronous generator 4, described dc motor 8, power sensor 10 and asynchronous generator 4 are each attached on pedestal 11。
The present embodiment is by directly measurement dc motor 8 output is as the input power of asynchronous generator 4, in conjunction with the output of power meter measures, it is possible to draw the parameter such as efficiency of asynchronous generator 4。
Meanwhile, under guaranteeing the requirement carrying out asynchronous generator 4 experiment, want to again process unnecessary three-phase alternating current, improve energy utilization rate。Therefore, can send back in electrical network by the electricity that sends of asynchronous generator 4, but during asynchronous generator 4 rotating speed difference, output current frequency is also different, it is impossible to be directly incorporated into electrical network, it is therefore desirable to asynchronous generator 4 exports electric current rectified device 2 rectification, inverter 3 frequency conversion is could send into electrical network after power frequency。
The above; it is only this utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; the change that can readily occur in or replacement, all should be encompassed within protection domain of the present utility model。Therefore, protection domain of the present utility model should be as the criterion with scope of the claims。
Claims (1)
1. a double-fed asynchronous generator model measurement device, it is characterized in that: include ac bus (7), dc bus (6), two quadrant converters (1), commutator (2), inverter (3), asynchronous generator (4), dc motor (8), ammeter (5), power sensor (10) and shaft coupling (9)
Described two quadrant converters (1) connect ac bus (7) and asynchronous generator (4), for the three-phase alternating current of electrical network converts to the alternating current of respective frequencies, for asynchronous generator (4) rotor-exciting；
Described commutator (2) is positioned between asynchronous generator (4) stator winding and dc bus (6), for the three-phase alternating current of sensing on asynchronous generator (4) stator winding is rectified into direct current；
Described inverter (3) connects dc bus (6) and ac bus (7), for DC inverter becomes the alternating current of mains frequency, feedback grid；
Described ammeter (5) is separately positioned between dc bus (6) and described inverter (3) and between dc bus (6) and described two quadrant converters (1), is used for measuring electric current；
The output shaft of described dc motor (8) is coaxially connected with asynchronous generator (4) with power sensor (10) by shaft coupling (9), and being used for driving asynchronous generator (4) is electric energy by changes mechanical energy；Described power sensor (10) is used for measuring the output of dc motor (8), the i.e. input power of asynchronous generator (4), described dc motor (8), power sensor (10) and asynchronous generator (4) are each attached on pedestal (11)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521139937.3U CN205333820U (en) | 2015-12-30 | 2015-12-30 | Double -fed asynchronous generator model test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521139937.3U CN205333820U (en) | 2015-12-30 | 2015-12-30 | Double -fed asynchronous generator model test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205333820U true CN205333820U (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521139937.3U Expired - Fee Related CN205333820U (en) | 2015-12-30 | 2015-12-30 | Double -fed asynchronous generator model test device |
Country Status (1)
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| CN (1) | CN205333820U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817443A (en) * | 2017-10-17 | 2018-03-20 | 株洲长河电力机车科技有限公司 | A kind of range extender of electric vehicle generator test system |
| CN107870269A (en) * | 2016-09-26 | 2018-04-03 | 维谛技术有限公司 | A kind of generating set analogue means |
-
2015
- 2015-12-30 CN CN201521139937.3U patent/CN205333820U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107870269A (en) * | 2016-09-26 | 2018-04-03 | 维谛技术有限公司 | A kind of generating set analogue means |
| CN107817443A (en) * | 2017-10-17 | 2018-03-20 | 株洲长河电力机车科技有限公司 | A kind of range extender of electric vehicle generator test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xie Baozhong Inventor after: Yang Xiangyu Inventor after: Su Wei Inventor after: Pan Yuanfa Inventor after: Huo Chong Inventor before: Xie Baozhong Inventor before: Yang Xiangyu Inventor before: Su Wei Inventor before: Pan Yuanfa |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160622 Termination date: 20181230 |