CN201795882U - Power testing device for power generating device - Google Patents
Power testing device for power generating device Download PDFInfo
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- CN201795882U CN201795882U CN2010202747168U CN201020274716U CN201795882U CN 201795882 U CN201795882 U CN 201795882U CN 2010202747168 U CN2010202747168 U CN 2010202747168U CN 201020274716 U CN201020274716 U CN 201020274716U CN 201795882 U CN201795882 U CN 201795882U
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- power
- frequency converter
- asynchronous
- measuring sensor
- rotor
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Abstract
The utility model discloses a power testing device for a power generating device, which belongs to the technical field of power tests carried on the power generating device and solves the problem of the present dynamometer for the power generating device that the cost is high. The power testing device comprises a four-quadrant frequency converter, a torque speed measuring sensor, an asynchronous generator and a grid connection device; the torque speed measuring sensor is connected with the rotor of the asynchronous generator; the four-quadrant frequency converter is connected with the rotor of the asynchronous generator through an electric wire; and the grid connection device is connected with the stator of the asynchronous generator through an electric wire. The power of the frequency converter required by the power testing device is only 30 percent of the rated power, therefore the cost becomes low, and the energy is saved.
Description
Technical field
The utility model belongs to power machine power test technical field, and is especially relevant with a kind of power machine device for testing power.
Background technology
The power machine power test is to use dynamometer machine to measure the torque of output on various power machines (engine) axle, and in conjunction with the power of rotating speed with definite this power machine of power.Existing dynamometer machine mainly contains two types, and a kind of is that power directly consumes, and as the water turbulence dynamometer machine, as the test foundation, does not have the ability that recovers energy with used up power, and the cost height, and harmonic wave density is big, is difficult for promoting the use of; Another kind is an energy feedback type, meet energy-conservation that country promotes, low-carbon (LC), reduce discharging requirement, the rotating shaft of power machine is connected with the rotor of asynchronous motor, and torque sensor is received on the rotor of motor, the stator of asynchronous motor is connected with four-quadrant frequency converter by electric wire, and then in the access electrical network, in the power test process, motor is driven by frequency converter, when motor is in generating state, electric energy feeds back to electrical network, play the purpose of Power Recovery, though this kind mode can realize Power Recovery, used frequency converter size need with specified power equivalence, frequency converter cost height, the electric energy that causes reclaiming is worth the depreciation that is not enough to offset equipment cost.
The utility model content
The purpose of this utility model is exactly to have the high deficiency of cost at above-mentioned prior art and provide a kind of cost lower and meet energy-conservation, that low-carbon (LC) requires energy feedback type power machine power testing method and implement device thereof.For this reason, the utility model is by the following technical solutions:
A kind of power machine device for testing power, comprise four-quadrant frequency converter and torque rotary speed measuring sensor, it is characterized in that: described implement device also comprises asynchronous generator and grid-connecting apparatus, described torque rotary speed measuring sensor is connected with the asynchronous generating machine rotor, described four-quadrant frequency converter is connected with the asynchronous generating machine rotor by electric wire, and grid-connecting apparatus is connected with the asynchronous generating machine stator by electric wire.
When the utility model uses, four-quadrant frequency converter, grid-connecting apparatus all are connected with internal electric network by electric power meter, the asynchronous generating machine rotor is connected with the power machine power output shaft, and the torque rotary speed measuring sensor is between asynchronous generating machine rotor and power machine power output shaft.By regulating four-quadrant frequency converter, make generator and mains frequency, voltage, phase place identical, the alternating current that asynchronous generator is produced is connected to the grid by grid-connecting apparatus, realizes that engine power reclaims, regulate power machine and produce rotation speed change, realize the measurement of power machine power characteristic.
The utility model can reach following beneficial effect: cost reduces greatly, and the size of frequency converter needs only 30% of rated power, and cost only is existing 1/5 of the feedback type measuring method of using; Also meet requirements of saving energy more, if the diesel engine test of a 45kw two hours, just can reclaim the electric energy of 40kw.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
As shown in Figure 1, the utility model comprises four-quadrant frequency converter 3, torque rotary speed measuring sensor 4, asynchronous generator and grid-connecting apparatus 2, torque rotary speed measuring sensor 4 is connected with asynchronous generating machine rotor 6, four-quadrant frequency converter 3 is connected with asynchronous generating machine rotor 6 by electric wire, and grid-connecting apparatus 2 is connected with asynchronous generating machine stator 7 by electric wire.
When the utility model uses, four-quadrant frequency converter 3, grid-connecting apparatus 2 all pass through electric power meter 1 and are connected with internal electric network, asynchronous generating machine rotor 6 is connected with the power output shaft of power machine 5, and torque rotary speed measuring sensor 4 is between the power output shaft of asynchronous generating machine rotor 6 and power machine 5.By regulating four-quadrant frequency converter, make generator and mains frequency, voltage, phase place identical, the alternating current that asynchronous generator is produced is connected to the grid by grid-connecting apparatus, realizes that engine power reclaims, regulate power machine and produce rotation speed change, realize the measurement of power machine power characteristic.
Claims (1)
1. power machine device for testing power, comprise four-quadrant frequency converter (3) and torque rotary speed measuring sensor (4), it is characterized in that: described implement device also comprises asynchronous generator and grid-connecting apparatus (2), described torque rotary speed measuring sensor (3) is connected with asynchronous generating machine rotor (6), described four-quadrant frequency converter (3) is connected with asynchronous generating machine rotor (6) by electric wire, and grid-connecting apparatus (2) is connected with asynchronous generating machine stator (7) by electric wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202747168U CN201795882U (en) | 2010-07-28 | 2010-07-28 | Power testing device for power generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202747168U CN201795882U (en) | 2010-07-28 | 2010-07-28 | Power testing device for power generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201795882U true CN201795882U (en) | 2011-04-13 |
Family
ID=43850788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202747168U Expired - Fee Related CN201795882U (en) | 2010-07-28 | 2010-07-28 | Power testing device for power generating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201795882U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697799A (en) * | 2015-03-10 | 2015-06-10 | 无锡惠科电工高新技术有限公司 | Automatic load increase testing system and testing method for engine |
| CN105043621A (en) * | 2015-06-30 | 2015-11-11 | 西安交通大学 | Power measuring device and method for miniature ultrahigh-speed prime mover |
-
2010
- 2010-07-28 CN CN2010202747168U patent/CN201795882U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697799A (en) * | 2015-03-10 | 2015-06-10 | 无锡惠科电工高新技术有限公司 | Automatic load increase testing system and testing method for engine |
| CN105043621A (en) * | 2015-06-30 | 2015-11-11 | 西安交通大学 | Power measuring device and method for miniature ultrahigh-speed prime mover |
| CN105043621B (en) * | 2015-06-30 | 2018-02-27 | 西安交通大学 | A kind of power-measuring device and method of small-sized ultrahigh speed prime mover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20110728 |