CN206054188U - A kind of device of synchronism detection wind energy conversion system pneumatic efficiency and generating efficiency - Google Patents
A kind of device of synchronism detection wind energy conversion system pneumatic efficiency and generating efficiency Download PDFInfo
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- CN206054188U CN206054188U CN201620997262.4U CN201620997262U CN206054188U CN 206054188 U CN206054188 U CN 206054188U CN 201620997262 U CN201620997262 U CN 201620997262U CN 206054188 U CN206054188 U CN 206054188U
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Abstract
A kind of device of synchronism detection wind energy conversion system pneumatic efficiency and generating efficiency, the base of device is fixed in test chamber, electromotor and moment of torsion rotational speed meters are packed on base, moment of torsion rotational speed meters one end is connected with the first power transmission shaft, wind wheel is packed on the first power transmission shaft, and wind wheel is located at the upstream of test chamber direction of flow；The moment of torsion rotational speed meters other end is connected with second driving shaft, and second driving shaft is fixedly connected with the motor shaft of electromotor；Power meter is connected with electromotor；The data output end of moment of torsion rotational speed meters and power meter is connected with computer；Slide rheostat is connected between power meter and electromotor, electromotor, power meter and slide rheostat constitute closed circuit, load of the slide rheostat as electromotor.Method of testing is：Under wind speed setting wind wheel is driven to rotate using to flow；Measurement rotor shaft moment of torsion, rotating speed and generated output power；Data measured is transferred in computer the generating efficiency for being calculated the whole machine of wind wheel pneumatic efficiency, wind energy conversion system and electromotor.
Description
Technical field
This utility model belongs to wind energy conversion system aerodynamic characteristic and power characteristic technical field of measurement and test, more particularly to a kind of synchronous
The device of test wind energy conversion system pneumatic efficiency and generating efficiency.
Background technology
Wind energy has become one of development and the most fast new forms of energy of application, has utilized as a kind of reproducible clean energy resource
The main equipment of wind energy is exactly wind energy conversion system, and wind wheel and electromotor are two important component parts of wind energy conversion system again, and wind wheel
The generating efficiency of pneumatic efficiency and electromotor directly determines the wind energy utilization efficiency of wind energy conversion system again, it is therefore desirable to the gas to wind wheel
The generating efficiency of efficiency of movement and electromotor is accurately tested, it is at present main by wind tunnel experiment realizing.
Above-mentioned wind tunnel experiment can be divided into two kinds, and the first is the wind-tunnel reality tested for the pneumatic efficiency of wind wheel
Test, second is the wind tunnel experiment tested for the generating efficiency of the whole machine of wind energy conversion system, and two kinds of wind tunnel experiments are completely solely
Stand what is carried out.
For the first wind tunnel experiment tested for the pneumatic efficiency of wind wheel, which is intended merely to assess wind wheel
Design quality degree；For the wind tunnel experiment tested by second generating efficiency for the whole machine of wind energy conversion system,
Which can only measure the generating efficiency of the whole machine of wind energy conversion system, and cannot measure the generating efficiency of the pneumatic efficiency and electromotor of wind wheel,
Therefore the generating efficiency of the pneumatic efficiency and electromotor of accurate evaluation wind wheel cannot be also used for；As the generating of the whole machine of wind energy conversion system is imitated
Rate is the result matched by the pneumatic efficiency of wind wheel and the generating efficiency of electromotor, therefore also difficult by second wind tunnel experiment
To solve electromotor matching problem.
At present, the generating efficiency of electromotor can only be calculated by the data acquired in two kinds of independent wind tunnel experiments,
As the experimental facilitiess adopted by two kinds of wind tunnel experiments are different, inevitably there is equipment error；Even if further, two kinds of wind
The wind tunnel speed set in the experiment of hole is identical, but the regulation of the wind tunnel speed in actual experiment can also have random error；Therefore,
Under the influence of many error in datas, it is difficult to ensure that the accuracy of the generating efficiency of electromotor.As wind tunnel experiment must be divided to two
It is secondary independently to carry out, cause experimentation to be wasted time and energy, and conventional efficient is not high.
Utility model content
For the problem that prior art is present, this utility model provides a kind of synchronism detection wind energy conversion system pneumatic efficiency and generating
The device of efficiency, only can obtain the generating effect of the whole machine of pneumatic efficiency and wind energy conversion system of wind wheel simultaneously by experimentation
Rate, effectively prevent the every error existed using independent experiment twice, not only ensure that the standard of the generating efficiency of electromotor
Exactness, and effectively increase conventional efficient.
To achieve these goals, this utility model is adopted the following technical scheme that：A kind of pneumatic effect of synchronism detection wind energy conversion system
The device of rate and generating efficiency, including base, wind wheel, electromotor, moment of torsion rotational speed meters and power meter；The base is fixedly installed on
In test chamber, the electromotor and moment of torsion rotational speed meters are fixedly mounted on base, and moment of torsion rotational speed meters one end is connected with first
Power transmission shaft, the wind wheel are fixedly mounted on the first power transmission shaft, and wind wheel is located at the upstream of test chamber direction of flow；It is described
The moment of torsion rotational speed meters other end is connected with second driving shaft, and second driving shaft is fixedly connected with by shaft coupling with the motor shaft of electromotor；
The power meter is connected with electromotor；The data output end of the moment of torsion rotational speed meters and power meter is connected with computer.
Slide rheostat, the electromotor, power meter and slip variable resistance are connected between the power meter and electromotor
Device constitutes closed circuit, load of the slide rheostat as electromotor.
Bearing support block is mounted in first power transmission shaft, between second driving shaft and base, by arranging bearing
Support base is to prevent the malformation when rotated of the first power transmission shaft, second driving shaft.
The longitudinal center line phase of first power transmission shaft, second driving shaft, moment of torsion rotational speed meters, electromotor and test chamber
Overlap.
A kind of method of synchronism detection wind energy conversion system pneumatic efficiency and generating efficiency, employs described synchronism detection wind energy conversion system
The device of pneumatic efficiency and generating efficiency, comprises the steps：
Step one：Wind speed in test chamber is set, and under wind speed setting drives wind wheel to turn using to flow
It is dynamic；
Step 2：The axle moment of torsion and rotating speed of wind wheel are measured by moment of torsion rotational speed meters, by the defeated of power meter measures electromotor
Go out power, by the output data transfer of the axle moment of torsion and rotary speed data and electromotor of wind wheel in computer；
Step 3：Pneumatic efficiency, the generating efficiency of the whole machine of wind energy conversion system and the generating of wind wheel are calculated using computer
The generating efficiency of machine.
Change the load of electromotor by changing the resistance of slide rheostat, and then change turning for electromotor and wind wheel
Speed, realizes the test of same wind speed and wind energy conversion system pneumatic efficiency and generating efficiency under different rotating speeds.
, by power coefficient as the change curve of tip-speed ratio is evaluated, wind energy is sharp for the pneumatic efficiency of the wind wheel
Computing formula with coefficient and tip-speed ratio is
Cp=2PM/ρAV3
λ=wR/V
Wherein, PM=2 π nM/60, in formula, PMFor wind wheel mechanical output, n is wind speed round, and M is rotor shaft moment of torsion, CPFor
Power coefficient, ρ are atmospheric density, and A is swept area of rotor, and V is arrives stream wind speed, and λ is tip-speed ratio, and w is the wind wheel anglec of rotation
Degree speed, R are wind wheel radius of turn.
The computing formula of the generating efficiency of the whole machine of the wind energy conversion system is
ηt=2PG/ρAV3
In formula, ηtFor the whole machine generating efficiency of wind energy conversion system, PGFor generated output power, ρ is atmospheric density, and A is rotor swept
Area, V are arrives stream wind speed.
The computing formula of the generating efficiency of the electromotor is
ηg=ηt/Cp
In formula, ηgFor electrical power generators efficiency, ηtFor the whole machine generating efficiency of wind energy conversion system, CPFor power coefficient.
The beneficial effects of the utility model：
This utility model compared with prior art, only can obtain the pneumatic efficiency of wind wheel simultaneously by experimentation
With the generating efficiency of the whole machine of wind energy conversion system, the every error existed using independent experiment twice is effectively prevent, not only be ensure that
The accuracy of the generating efficiency of electromotor, and effectively increase conventional efficient.
Description of the drawings
Fig. 1 is the apparatus structure signal of a kind of synchronism detection wind energy conversion system pneumatic efficiency of the present utility model and generating efficiency
Figure；
In figure, 1-base, 2-wind wheel, 3-electromotor, 4-moment of torsion rotational speed meters, 5-power meter, 6-slide rheostat,
7-test chamber, the 8-the first power transmission shaft, 9-second driving shaft, 10-shaft coupling, 11-bearing support block, 12-calculate
Machine.
Specific embodiment
This utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, the device of a kind of synchronism detection wind energy conversion system pneumatic efficiency and generating efficiency, including base 1, wind wheel 2,
Electromotor 3, moment of torsion rotational speed meters 4 and power meter 5；The base 1 is fixedly installed in test chamber 7, the electromotor 3 and turn round
Square rotational speed meters 4 are fixedly mounted on base 1, and 4 one end of moment of torsion rotational speed meters is connected with the first power transmission shaft 8, and the wind wheel 2 is fixedly mounted
On the first power transmission shaft 8, and wind wheel 2 is located at the upstream of 7 direction of flow of test chamber；4 other end of moment of torsion rotational speed meters connects
Second driving shaft 9 is connected to, second driving shaft 9 is fixedly connected with by shaft coupling 10 with the motor shaft of electromotor 3；The power meter 5 with
Electromotor 3 is connected；The data output end of the moment of torsion rotational speed meters 4 and power meter 5 is connected with computer 12.
Slide rheostat 6, the electromotor 3, power meter 5 and slip are connected between the power meter 5 and electromotor 3
Rheostat 6 constitutes closed circuit, load of the slide rheostat 6 as electromotor 3.
Bearing support block 11 is mounted in first power transmission shaft 8, between second driving shaft 9 and base 1, by arranging
Bearing support block 11 is to prevent the first power transmission shaft 8, the malformation when rotated of second driving shaft 9.
In the axial direction of first power transmission shaft 8, second driving shaft 9, moment of torsion rotational speed meters 4, electromotor 3 and test chamber 7
Heart line coincides.
A kind of method of synchronism detection wind energy conversion system pneumatic efficiency and generating efficiency, employs described synchronism detection wind energy conversion system
The device of pneumatic efficiency and generating efficiency, comprises the steps：
Step one：Wind speed in test chamber 7 is set, and wind wheel 2 is driven using to flow under wind speed setting
Rotate；
Step 2：The axle moment of torsion and rotating speed of wind wheel 2 are measured by moment of torsion rotational speed meters 4, electromotor 3 is measured by power meter 5
Output, by the output data transfer of the axle moment of torsion and rotary speed data and electromotor 3 of wind wheel 2 to computer 12
In；
Step 3：The pneumatic efficiency of wind wheel 2, the generating efficiency of the whole machine of wind energy conversion system are calculated using computer 12 and are sent out
The generating efficiency of motor 3.
Change the load of electromotor 3 by changing the resistance of slide rheostat 6, and then change electromotor 3 and wind wheel 2
Rotating speed, realizes the test of same wind speed and wind energy conversion system pneumatic efficiency and generating efficiency under different rotating speeds.
The pneumatic efficiency of the wind wheel 2 by power coefficient as the change curve of tip-speed ratio is evaluated, wind energy
The computing formula of usage factor and tip-speed ratio is
Cp=2PM/ρAV3
λ=wR/V
Wherein, PM=2 π nM/60, in formula, PMFor wind wheel mechanical output, n is wind speed round, and M is rotor shaft moment of torsion, CPFor
Power coefficient, ρ are atmospheric density, and A is swept area of rotor, and V is arrives stream wind speed, and λ is tip-speed ratio, and w is the wind wheel anglec of rotation
Degree speed, R are wind wheel radius of turn.
The computing formula of the generating efficiency of the whole machine of the wind energy conversion system is
ηt=2PG/ρAV3
In formula, ηtFor the whole machine generating efficiency of wind energy conversion system, PGFor generated output power, ρ is atmospheric density, and A is rotor swept
Area, V are arrives stream wind speed.
The computing formula of the generating efficiency of the electromotor 3 is
ηg=ηt/Cp
In formula, ηgFor electrical power generators efficiency, ηtFor the whole machine generating efficiency of wind energy conversion system, CPFor power coefficient.
Scheme in embodiment simultaneously is not used to limit scope of patent protection of the present utility model, all without departing from this utility model
Carried out by equivalence enforcement or change, be both contained in the scope of the claims of this case.
Claims (4)
1. the device of a kind of synchronism detection wind energy conversion system pneumatic efficiency and generating efficiency, it is characterised in that：Including base, wind wheel, send out
Motor, moment of torsion rotational speed meters and power meter；The base is fixedly installed in test chamber, the electromotor and moment of torsion rotational speed meters
It is fixedly mounted on base, moment of torsion rotational speed meters one end is connected with the first power transmission shaft, the wind wheel is fixedly mounted on the first power transmission shaft
On, and wind wheel is located at the upstream of test chamber direction of flow；The moment of torsion rotational speed meters other end is connected with second driving shaft, the
Two power transmission shafts are fixedly connected with by shaft coupling with the motor shaft of electromotor；The power meter is connected with electromotor；The torque axis
The data output end of fast instrument and power meter is connected with computer.
2. the device of a kind of synchronism detection wind energy conversion system pneumatic efficiency according to claim 1 and generating efficiency, its feature exist
In：Slide rheostat is connected between the power meter and electromotor, the electromotor, power meter and slide rheostat are constituted
Closed circuit, load of the slide rheostat as electromotor.
3. the device of a kind of synchronism detection wind energy conversion system pneumatic efficiency according to claim 1 and generating efficiency, its feature exist
In：Bearing support block is mounted in first power transmission shaft, between second driving shaft and base, by arranging bearing support block
To prevent the malformation when rotated of the first power transmission shaft, second driving shaft.
4. the device of a kind of synchronism detection wind energy conversion system pneumatic efficiency and generating efficiency according to any one of claims 1 to 3,
It is characterized in that：The axial centre of first power transmission shaft, second driving shaft, moment of torsion rotational speed meters, electromotor and test chamber
Line coincides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620997262.4U CN206054188U (en) | 2016-08-31 | 2016-08-31 | A kind of device of synchronism detection wind energy conversion system pneumatic efficiency and generating efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620997262.4U CN206054188U (en) | 2016-08-31 | 2016-08-31 | A kind of device of synchronism detection wind energy conversion system pneumatic efficiency and generating efficiency |
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| CN206054188U true CN206054188U (en) | 2017-03-29 |
Family
ID=58379175
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194603A (en) * | 2016-08-31 | 2016-12-07 | 沈阳航空航天大学 | A kind of synchronism detection wind energy conversion system pneumatic efficiency and the device and method of generating efficiency |
| CN109653964A (en) * | 2019-02-28 | 2019-04-19 | 沈阳航空航天大学 | A kind of wind energy conversion system aerodynamic experiment blockage correction method |
| CN111271179A (en) * | 2018-12-04 | 2020-06-12 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Power performance test method for ram air turbine |
-
2016
- 2016-08-31 CN CN201620997262.4U patent/CN206054188U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194603A (en) * | 2016-08-31 | 2016-12-07 | 沈阳航空航天大学 | A kind of synchronism detection wind energy conversion system pneumatic efficiency and the device and method of generating efficiency |
| CN106194603B (en) * | 2016-08-31 | 2018-10-19 | 沈阳航空航天大学 | A kind of device and method of synchronism detection wind energy conversion system pneumatic efficiency and generating efficiency |
| CN111271179A (en) * | 2018-12-04 | 2020-06-12 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Power performance test method for ram air turbine |
| CN111271179B (en) * | 2018-12-04 | 2022-07-05 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Power performance test method for ram air turbine |
| CN109653964A (en) * | 2019-02-28 | 2019-04-19 | 沈阳航空航天大学 | A kind of wind energy conversion system aerodynamic experiment blockage correction method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170329 Effective date of abandoning: 20181019 |
|
| AV01 | Patent right actively abandoned |