CN101545953B - Minitype aerogenerator performance testing method and special testing platform thereof - Google Patents

Abstract

The invention discloses a minitype aerogenerator performance testing method and a special testing platform thereof. The method comprises the following steps: establishing a novel generator mathematical model and making the model into a software module so as to be preset in an industrial personal computer (IPC) along with generator attribute parameters; designing a controllable artificial air source and obtaining continuously changing analog natural wind speed at an air outlet; arranging an anemometer at the air outlet to detect and input a wind speed signal to the IPC to obtain a generator performance theoretical curve diagram through calculation; then arranging a generator to be tested at the air outlet to collect and input performance data of the generator to the IPC to obtain a generator performance practical curve diagram; and comparing both curve diagrams to judge whether the performance of the generator accords with requirements. The minitype aerogenerator performance testing method is convenient for technical staff to detect and analyze the operation conditions of a minitype aerogenerator so as to carry out optimized design of the aerogenerator; moreover, the adopted novel mathematical model of the aerogenerator ensures more precise and reliable analysis result.

Description

Small-sized wind power generator performance test methods and special test platform thereof

Technical field

The present invention relates to a kind of method of testing and special test platform thereof of small-sized wind power generator performance.

Background technology

Small-sized wind power generator is the backcountry that mainly is applicable to away from electrical network, as a kind of generating set in areas such as pastoral area, grassland, mountain area, island.It is very difficult to erect power transmission lines in these areas, and electric cost is also very high; Simultaneously, often there is bigger wind resource in these areas, are particularly suitable for the use of small-sized residents aerogenerator.Small-sized wind power generator need carry out performance test to it when design, research and analyse the corresponding relation between its output power and the wind speed, according to test result generator is optimized and improves again.But, do not have custom-designed small-sized wind power generator test platform in the prior art, for small-sized wind power generator, the technician is directly put it into production often, follows the tracks of its practical work process then, later improves design after pinpointing the problems again again, even if at some large-scale aerogenerators, also usually be to put it into the strong place of occurring in nature wind-force to carry out actual test, do not carry out the method for simulation test, this will be subjected to the restriction of natural conditions.

So how to develop a kind of small-sized wind power generator performance test methods and corresponding test platform,, just become problem demanding prompt solution in the industry conveniently to research and analyse its practical working situation and its performance is optimized.

Summary of the invention

Technical matters to be solved by this invention is to provide a kind of technician of convenience to research and analyse small-sized wind power generator performance test methods and the corresponding test platform of small-sized wind power generator working condition it is optimized design in order to overcome above-mentioned the deficiencies in the prior art.

For solving the problems of the technologies described above, the inventor has adopted following technical scheme:

A kind of small-sized wind power generator performance test methods, its characteristics are may further comprise the steps:

A, set up aerogenerator mathematical model, calculate the aerogenerator characteristic equation, make the corresponding software module and it preset in the industrial computer;

B, with small-sized wind power generator property parameters to be tested, comprise that blade geometry size, aerofoil profile rise resistance coefficient, blade installation site, kinematic train ratio of gear, the parameter of electric machine, pylon height, also comprise wind speed situation of change parameter, wind generator system controlled variable or the like, import industrial computer in advance;

C, design one comprise the artificial wind regime in ventilation blower and air channel;

D, use frequency converter are regulated control ventilation blower rotating speed, and the air outlet in the air channel obtains continually varying simulating nature wind speed;

E, at air outlet one wind gage is set and detects this continually varying wind velocity signal, and the Usage data collection card is translated into after the continually varying digital signal in the input industrial computer, calculate small-sized wind power generator performance theory curve, during calculating, be to adopt the software module of setting up in a step, the actual wind speed signal that the parameter imported in the b step and wind gage are measured is brought in the mathematical model of software module, thereby the small-sized wind power generator performance theory curve that obtains, calculation process is finished by the industrial computer Automatic Program;

F, small-sized wind power generator to be detected is arranged at and the wind gage adjacent position towards air outlet, and the Usage data collection card gathers small-sized wind power generator performance actual value, this value is imported industrial computer obtain small-sized wind power generator performance actual curve figure;

G, relatively with small-sized wind power generator performance actual curve figure and theory curve, thus judge whether the small-sized wind power generator performance meets the requirements.

In said method, the described mathematical model of setting up aerogenerator of a step wherein, be meant a kind of novel aerodynamics theory that dynamically becomes a mandarin of applicant's independent research design, based on this, the applicant has set up aerogenerator group system nonlinear mathematics analytical model, has realized the coupling Simulation analysis of each parts between the aerogenerator group system.And on the basis of this mathematical analysis model, Application and Development software.Described mathematical model has solved that traditional aerogenerator mathematical model foline momentum theory can not be considered because the defective of air quality time lag of causing can make analysis result more accurate.When using frequency converter to regulate control ventilation blower rotating speed in the steps d, can also can directly the variable frequency adjustment device be linked to each other with industrial computer, realize control automatically by the computer pre-set programs directly by manually-operated control; Small-sized wind power generator performance theoretical analysis curve map among step e, f, the g and actual test curve figure mainly refer to the wind speed of its variation and the corresponding relation curve map between the output power, in step f, be to use data collecting card to gather the output voltage and the electric current of small-sized wind power generator, and then calculate its output power, and its process is to control realization automatically by industrial computer, and the comparison procedure in the g step also is to finish and directly export comparative result automatically by industrial computer simultaneously.Theory curve that obtains in e, f step and actual curve figure all are that mathematical model and the software module set up in according to step a calculate, and calculate the data that adopted and are the data value that records among the parameter imported among the step b and step e, the f.

The present invention also provides the small-sized wind power generator performance test of using in a kind of above-mentioned performance test methods platform, its characteristics are to comprise ventilation blower, air channel, wind gage, small-sized wind power generator to be measured and industrial computer, described ventilation blower is arranged at an end in air channel, the other end air outlet place in air channel is provided with wind gage and small-sized wind power generator to be measured, wherein ventilation blower links to each other with a variable-frequence governor, variable-frequence governor links to each other with industrial computer, and wind gage links to each other with industrial computer by data collecting card with small-sized wind power generator to be measured.Can find out that this test platform and above-mentioned method of testing mate, be for putting into practice the custom-designed test platform of above-mentioned method of testing.

The generator performance method of testing in the technical program and the test platform of design, can make things convenient for technician's check and analysis research small-sized wind power generator working condition so that it is optimized design, filled up in the small-sized wind power generator research technological gap for the test optimization this respect, the novel mathematical models of the aerogenerator that adopts in this method can make the analysis result of this method of testing accurate more, reliable simultaneously.

Description of drawings

Fig. 1 is a small-sized wind power generator group performance test schematic diagram of the present invention;

Fig. 2 is a test platform architecture synoptic diagram of the present invention;

Fig. 3 is that the present invention builds the elliptical coordinate system definition figure in the mathematical model;

Fig. 4 changes the variable power curve map for the wind speed that the present invention builds in the mathematical model;

Fig. 5 is that the present invention builds the wind-power electricity generation acc power driving-chain figure in the mathematical model;

Fig. 6 is that the present invention builds the inductor generator characteristics of output power figure in the mathematical model.

Embodiment

The invention will be further described below in conjunction with drawings and Examples:

Embodiment:

A kind of small-sized wind power generator performance test methods may further comprise the steps:

A, set up aerogenerator mathematical model, calculate the aerogenerator characteristic equation, make the corresponding software module and it preset in the industrial computer;

B, with small-sized wind power generator property parameters to be tested, comprise that blade geometry size, aerofoil profile rise resistance coefficient, blade installation site, kinematic train ratio of gear, the parameter of electric machine, pylon height, also comprise wind speed situation of change parameter such as wind speed, incision wind speed, cut-out wind speed etc., and wind generator system controlled variable such as Control current, control voltage or the like, import industrial computer in advance;

C, design one comprise the artificial wind regime in ventilation blower and air channel;

D, use frequency converter are regulated control ventilation blower rotating speed, and the air outlet in the air channel obtains continually varying simulating nature wind speed;

E, at air outlet one wind gage is set and detects this continually varying wind velocity signal, and the Usage data collection card is translated into after the continually varying digital signal in the input industrial computer, calculate small-sized wind power generator performance theory curve;

F, small-sized wind power generator to be detected is arranged at and the wind gage adjacent position towards air outlet, and the Usage data collection card gathers small-sized wind power generator performance actual value, this value is imported industrial computer obtain small-sized wind power generator performance actual curve figure;

G, relatively with small-sized wind power generator performance actual curve figure and theory curve, thus judge whether the small-sized wind power generator performance meets the requirements.

Fig. 1 is the test philosophy figure of this method, in the present embodiment, data collecting card in industrial computer while controlled wind speed meter, frequency converter and the electric cabinet, the generator output current to be detected rectifier of flowing through carries out rectification, the electric cabinet of flowing through again enters accumulator, finally exports power to load end behind inverter.

In said method, the described mathematical model of setting up aerogenerator of a step wherein, be meant a kind of novel aerodynamics theory that dynamically becomes a mandarin of applicant's autonomous Design, based on this, the applicant has set up aerogenerator group system nonlinear mathematics analytical model, has realized the coupling Simulation analysis of each parts between the aerogenerator group system.And on the basis of this mathematical analysis model, Application and Development software.Specifically, its process comprises with the lower part.

The aerodynamics part

The applicant will be applied to the aerodynamics that dynamic wake strength that the outstanding wing aerodynamics of helicopter calculates is used for aerogenerator pioneeringly and calculate.

Its analytic solution are exactly to be utilized the potential function of the closed loop derive under elliptical coordinate system by Prandtl, and this function can provide that pressure is discontinuously arranged arbitrarily on the oar dish, is fit to rotor aerodynamics and calculates.This functional form is as follows:

$\mathrm{\Φ}(v,\mathrm{\η},\stackrel{\‾}{\mathrm{\ψ}},\stackrel{\‾}{t})=\underset{m=0}{\overset{\∞}{\mathrm{\Σ}}}\underset{n=m+1,m+3L}{\overset{\∞}{\mathrm{\Σ}}}{P}_n^m\left(v\right)Q_n^m\left(\mathrm{i\η}\right)[C_n^m\cos \left(m\stackrel{\‾}{\mathrm{\ψ}}\right)+D_n^m\sin \left(m\stackrel{\‾}{\mathrm{\ψ}}\right)]---\left(1\right)$

Here coefficient C _n ^mAnd D _n ^mCan define the pressure distribution in rotor flow field uniquely, v, η and ψ are the elliptical coordinate system coordinate, with reference to figure 3.η=0 He is arranged on the oar dish $v=\sqrt{1-{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="H2009101036847E00011.png,H2009101036847E00012.png"\; state="\{\{state\}\}">r</figure-callout>}}^2},$ Function P, Q are respectively the first kind and the second class Legendre function, and oar dish upward pressure distributes so:

$P(\stackrel{\&OverBar;}{r},\mathrm{\&psi;},\stackrel{\&OverBar;}{t})=-2\underset{n,m}{\mathrm{\&Sigma;}}{P}_n^m\left(v\right)Q_n^m\left(i0\right)[C_n^m\cos \left(m\stackrel{\&OverBar;}{\mathrm{\&psi;}}\right)+D_n^m\sin \left(m\stackrel{\&OverBar;}{\mathrm{\&psi;}}\right)]---\left(2\right)$

Consider Ф ^AAnd Ф ^VSatisfy the Laplace equation, can obtain:

$P^V(\stackrel{\&OverBar;}{r},\mathrm{\&psi;},\stackrel{\&OverBar;}{t})=\underset{m=0}{\overset{\&infin;}{\mathrm{\&Sigma;}}}\underset{n=m+1,m+3\&CenterDot;\&CenterDot;\&CenterDot;}{\overset{\&infin;}{\mathrm{\&Sigma;}}}{\stackrel{\&OverBar;}{P}}_n^m\left(v\right)[{\left({\mathrm{\&tau;}}_n^{\mathrm{mc}}\right)}^V\cos \left(\mathrm{m\&psi;}\right)+{\left({\mathrm{\&tau;}}_n^{\mathrm{ms}}\right)}^V\sin \left(\mathrm{m\&psi;}\right)]---\left(3\right)$

$P^A(\stackrel{\&OverBar;}{r},\mathrm{\&psi;},\stackrel{\&OverBar;}{t})=\underset{m=0}{\overset{\&infin;}{\mathrm{\&Sigma;}}}\underset{n=m+1,m+3\&CenterDot;\&CenterDot;\&CenterDot;}{\overset{\&infin;}{\mathrm{\&Sigma;}}}{\stackrel{\&OverBar;}{P}}_n^m\left(v\right)[{\left({\mathrm{\&tau;}}_n^{\mathrm{mc}}\right)}^A\cos \left(\mathrm{m\&psi;}\right)+{\left({\mathrm{\&tau;}}_n^{\mathrm{ms}}\right)}^A\sin \left(\mathrm{m\&psi;}\right)]---\left(4\right)$

As mentioned above, potential function is divided into two parts: by part that acceleration produced with because the part that momentum flux produced, two parts all satisfy the Laplace equation, set up the relation between rotor vertical direction induced velocity and the potential function therefrom:

$w=-\frac{1}{V}{\&Integral;}_0^{\&infin;}\frac{{\&PartialD;\mathrm{\&Phi;}}^V}{\&PartialD;z}\mathrm{d\&xi;}\&equiv;L\left[{\mathrm{\&Phi;}}^V\right]---\left(5\right)$

$\stackrel{\&CenterDot;}{w}=-\frac{{\&PartialD;\mathrm{\&Phi;}}^A}{\&PartialD;z}|\mathrm{\&xi;}=0\&equiv;E[{\mathrm{\&Phi;}}^A]---\left(6\right)$

Here V is nondimensional free stream velocity (wind axes), and the vertical oar dish of z plane is downwards for just, and ξ is that wind axes are come flow path direction, as shown in Figure 3.

Potential function is the same with the pressure distribution function with handling, and also the progression form that induced velocity is formed with any overtone order and any order radial shape function can be described:

$w(r,\mathrm{\&psi;})=\underset{n,m}{\mathrm{\&Sigma;}}{\mathrm{\&psi;}}_n^m\left(v\right)[a_n^m\cos \left(\mathrm{m\&psi;}\right)+{\mathrm{\&beta;}}_n^m\sin \left(\mathrm{m\&psi;}\right)]---\left(7\right)$

Premultiplication P _n ^mAnd cos (m ψ) (or sin (m ψ)), and obtain along oar dish integration:

$\left[M^C\right]{\left\{\begin{array}{c}\&CenterDot;\\ \&CenterDot;\\ \&CenterDot;\\ \left\{{\mathrm{\&alpha;}}_j^r\right\}\\ \&CenterDot;\\ \&CenterDot;\\ \&CenterDot;\end{array}\right\}}^{*}+{\left[L^C\right]}^{-1}\left\{\begin{array}{c}\&CenterDot;\\ \&CenterDot;\\ \&CenterDot;\\ \left\{{\mathrm{\&alpha;}}_j^r\right\}\\ \&CenterDot;\\ \&CenterDot;\\ \&CenterDot;\end{array}\right\}=\left\{\begin{array}{c}\&CenterDot;\\ \&CenterDot;\\ \&CenterDot;\\ {\mathrm{\&tau;}}_n^{\mathrm{mc}}\\ \&CenterDot;\\ \&CenterDot;\\ \&CenterDot;\end{array}\right\}---\left(8\right)$

$\left[M^S\right]{\left\{\begin{array}{c}\&CenterDot;\\ \&CenterDot;\\ \&CenterDot;\\ \left\{b_j^r\right\}\\ \&CenterDot;\\ \&CenterDot;\\ \&CenterDot;\end{array}\right\}}^{*}+{\left[L^S\right]}^{-1}\left\{\begin{array}{c}\&CenterDot;\\ \&CenterDot;\\ \&CenterDot;\\ \left\{b_j^r\right\}\\ \&CenterDot;\\ \&CenterDot;\\ \&CenterDot;\end{array}\right\}=\left\{\begin{array}{c}\&CenterDot;\\ \&CenterDot;\\ \&CenterDot;\\ {\mathrm{\&tau;}}_n^{\mathrm{ms}}\\ \&CenterDot;\\ \&CenterDot;\\ \&CenterDot;\end{array}\right\}---\left(9\right)$

In conjunction with practical application, with the induced velocity expression formula be rewritten as can be as required overtone order N and the radial shape function number S that needs of each harmonic function _rThe form in stage.Induced velocity expression formula after stage is revised as:

$w_i(\hat{x},\mathrm{\&psi;},t)=\underset{r=0}{\overset{N}{\mathrm{\&Sigma;}}}\underset{j=r+1,r+3\&CenterDot;\&CenterDot;\&CenterDot;}{\overset{2S_r+r-1}{\mathrm{\&Sigma;}}}{\mathrm{\&psi;}}_j^r\left(\hat{x}\right)[{\mathrm{\&alpha;}}_j^r\cos \left(\mathrm{r\&psi;}\right)+{\mathrm{\&beta;}}_j^r\sin \left(\mathrm{r\&psi;}\right)]---\left(10\right)$

The applicant once adopted said method that 600 kilowatts of wind power generating set of certain Stall Type are carried out the aerodynamic performance analysis, studies show that when considering the stable state wind speed, result calculated is compared with the result who obtains with foline momentum theory and Bladed software analysis and is similar to, and shows that this theory can be used for carrying out the calculating of aerodynamic performance.When considering that dynamic wind speed changes, adopt this kind theory can consider property time lag that air quality causes, as shown in Figure 4.

Mechanical driving part

As shown in Figure 5.The power driving-chain of wind power generating set mainly is made of wind wheeling rotor, slow-speed shaft, gear case, high speed shaft and generator amature.The applicant has set up the kinematic train kinetic model on the basis of novel air kinetic theory.

The kinematic train of wind generator system can be regarded the system that is made up of limited inertance element, flexible member and damping element as usually.Therefore, in setting up the mechanism model of wind power generating set, adopting the spring damping quality system usually is mechanical model, and the basic dynamic equations formula of this mechanical model is:

$\left\{M\right\}\left\{\stackrel{\&CenterDot;\&CenterDot;}{u}\right\}+\left\{C\right\}\left\{\stackrel{\&CenterDot;}{u}\right\}+\left\{K\right\}\left\{u\right\}=\left\{R\right\}---\left(11\right)$

In the formula: M} is the total quality matrix, and C} is the integral damping matrix, and K} is the integral rigidity matrix, and R} is the external applied load array, u},

{ ü } is respectively displacement, speed, the acceleration array of node.

The dynamic perfromance of wind wheeling rotor and slow-speed shaft

According to modeling mechanism, the dynamic perfromance of wind wheeling rotor and slow-speed shaft can be described with a simple spring-quality-damper model.Equation of motion is:

$J_m{\stackrel{\&CenterDot;\&CenterDot;}{\mathrm{\&theta;}}}_R+B_R{\stackrel{\&CenterDot;}{\mathrm{\&theta;}}}_R=T_a-T---\left(12\right)$

$T=k_1({\mathrm{\&theta;}}_R-{\mathrm{\&theta;}}_1)+{\mathrm{<figure-callout\; id="1"\; label="B"\; filenames="H2009101036847E00012.png,H2009101036847E00021.png"\; state="\{\{state\}\}">B</figure-callout>}}_1{\stackrel{\&CenterDot;}{\mathrm{\&theta;}}}_R+{\mathrm{<figure-callout\; id="1"\; label="B"\; filenames="H2009101036847E00012.png,H2009101036847E00021.png"\; state="\{\{state\}\}">B</figure-callout>}}_1^{*}({\stackrel{\&CenterDot;}{\mathrm{\&theta;}}}_R-{\stackrel{\&CenterDot;}{\mathrm{\&theta;}}}_1)$

θ in the formula _R: the angular displacement of wind wheeling rotor; θ ₁: the angular displacement of slow-speed shaft; B _R: the damping of wind wheeling rotor; B ₁: the external damping of slow-speed shaft; B ₁ ^*: the internal damping of slow-speed shaft; k ₁: the rigidity of slow-speed shaft; T: the moment of torsion on the slow-speed shaft.

The dynamic perfromance of gear case

T+GT _p＝0 (13)

θ ₂＝Gθ ₁

T in the formula _p: the moment of torsion of high speed shaft; θ ₂: the angular displacement of high speed shaft.

The dynamic perfromance of high speed shaft and generator amature

Because therefore the moment of inertia of high speed shaft can ignore than little many of the moment of inertia of generator amature.So the equation of motion that obtains at last is:

$J_e{\stackrel{\&CenterDot;\&CenterDot;}{\mathrm{\&theta;}}}_e=T_e-T_p---\left(14\right)$

$T_p=k_2({\mathrm{\&theta;}}_2-{\mathrm{\&theta;}}_e)+{\mathrm{<figure-callout\; id="2"\; label="B"\; filenames="H2009101036847E00011.png,H2009101036847E00012.png"\; state="\{\{state\}\}">B</figure-callout>}}_2{\stackrel{\&CenterDot;}{\mathrm{\&theta;}}}_e+{\mathrm{<figure-callout\; id="2"\; label="B"\; filenames="H2009101036847E00011.png,H2009101036847E00012.png"\; state="\{\{state\}\}">B</figure-callout>}}_2^{*}({\stackrel{\&CenterDot;}{\mathrm{\&theta;}}}_2-{\stackrel{\&CenterDot;}{\mathrm{\&theta;}}}_e)$

K in the formula ₂: the rigidity of high speed shaft; B ₂: the external damping of high speed shaft; B ₂ ^*: the internal damping of high speed shaft; θ _e: the angular displacement of generator amature.

The model for dynamic analysis of generator

Inductor generator is also referred to as asynchronous generator, and two kinds of mouse-cage type and winding-types are arranged.The mouse-cage type asynchronous generator does not need to add excitation, does not have slip ring and brush, and is simple in structure, firm, do not need basically to safeguard, thereby obtained widespread use in wind generator system.Induction motor both can be used as the motor operation, also can be used as generator operation.When being used as the motor operation, its rotating speed w _eAlways be lower than with leg speed w _s=n _pw ₀, w ₀Be mains frequency, n _pBe number of pole-pairs.At this moment the electromagnetic torque that produces in the motor with turn to identical.When induction motor was higher than with leg speed, then the direction of electromagnetic torque was opposite with sense of rotation, and motor is as generator operation, and its effect is that mechanical output is changed into electric power.The revolutional slip S of generator is formula (15), and the motor operation is done in S＞0, and generator operation is made in S＜0.

S＝(w _s-w _e)/w _s (15)

The power out-put characteristic of inductor generator as shown in Figure 6.The output power of inductor generator is relevant with rotating speed, reaches maximal value usually when being higher than the rotating speed of synchronous rotational speed 3% ~ 5%.Surpass this rotating speed, inductor generator enters the irregular operation district.

The model of constant speed induction generator can be reduced to linear first-order differential equation form (16), and this model has been represented an induction generator that directly is incorporated into the power networks.

${\stackrel{\&CenterDot;}{T}}_e=\frac{1}{\mathrm{\&tau;}}[D_e(w_e-{\mathrm{<figure-callout\; id="0"\; label="w"\; filenames="H2009101036847E00021.png,H2009101036847E00032.png"\; state="\{\{state\}\}">w</figure-callout>}}_0/n_p)-T_e]---\left(16\right)$

D wherein _eSlope for the torque/speed curves of generator; τ is the time constant of generator.

Above-mentioned mathematical model is applicant's independent research design, has solved that traditional aerogenerator mathematical model foline momentum theory can not be considered because the defective of the time lag that air quality causes can make analysis result more accurate.When using frequency converter to regulate control ventilation blower rotating speed in the present embodiment steps d, be directly the variable frequency adjustment device to be linked to each other with industrial computer, realize control automatically by the computer pre-set programs; Step e, f, small-sized wind power generator performance theoretical analysis curve map among the g and actual test curve figure mainly refer to the wind speed of its variation and the corresponding relation curve map between the output power, be to be to use data collecting card to gather the output voltage and the electric current of small-sized wind power generator among the step f, and then calculate its output power, specifically, be in the present embodiment when generator output current to be tested is flowed through rectifier and electric cabinet, by being arranged on the output voltage and the electric current of the data collecting card collection small-sized wind power generator in the electric cabinet, and then calculate its output power, its process is to control realization automatically by industrial computer, and the comparison procedure in the g step also is to finish and directly export comparative result automatically by industrial computer simultaneously.

As shown in Figure 2, the present invention also provides the small-sized wind power generator performance test of using in a kind of above-mentioned performance test methods platform, its characteristics are to comprise ventilation blower 1, air channel 2, wind gage 3, small-sized wind power generator to be measured 4 and industrial computer 5, described ventilation blower 1 is arranged at an end in air channel 2, other end air outlet 6 places in air channel 2 are provided with wind gage 3 and small-sized wind power generator 4 to be measured, wherein ventilation blower 1 links to each other with a variable-frequence governor 7, variable-frequence governor 7 links to each other with industrial computer 5, and wind gage 3 links to each other with industrial computer 5 by data collecting card 8 with small-sized wind power generator 4 to be measured.Specifically, wherein ventilation blower 1 is designed to several arranged side by side, provide wind regime for air channel 2 together, air channel 2 is set to the shape of air outlet 6 diameters less than ventilation blower 1 position diameter, can be beneficial to the generation of natural wind simulating, pre-set programs in the industrial computer 5 wherein, can produce natural wind simulating by industrial computer 5 control of conversion speed regulators 7 and then control ventilation blower 1, industrial computer 5 can pass through the data that data collecting card 8 is gathered wind gages 3 and small-sized wind power generator to be measured 4 automatically simultaneously, and calculate, relatively, whether can reach requirement thereby determine small-sized wind power generator to be detected 4 performances.

Claims (2)

1. small-sized wind power generator performance test methods is characterized in that may further comprise the steps:

A, set up aerogenerator mathematical model, calculate the aerogenerator characteristic equation, make the corresponding software module and it preset in the industrial computer;

B, with small-sized wind power generator property parameters to be tested, comprise that blade geometry size, aerofoil profile rise resistance coefficient, blade installation site, kinematic train ratio of gear, the parameter of electric machine, pylon height and import industrial computer in advance;

C, design one comprise the artificial wind regime in ventilation blower and air channel;

D, use frequency converter are regulated control ventilation blower rotating speed, and the air outlet in the air channel obtains continually varying simulating nature wind speed;

E, at air outlet one wind gage is set and detects this continually varying wind velocity signal, and the Usage data collection card is translated into after the continually varying digital signal in the input industrial computer, calculate small-sized wind power generator performance theory curve;

F, small-sized wind power generator to be detected is arranged at and the wind gage adjacent position towards air outlet, and the Usage data collection card gathers small-sized wind power generator performance actual value, this value is imported industrial computer obtain small-sized wind power generator performance actual curve figure;

G, relatively with small-sized wind power generator performance actual curve figure and theory curve, thus judge whether the small-sized wind power generator performance meets the requirements.

2. the small-sized wind power generator performance test platform that uses in the performance test methods according to claim 1, it is characterized in that comprising ventilation blower, air channel, wind gage, small-sized wind power generator to be measured and industrial computer, described ventilation blower is arranged at an end in air channel, the other end air outlet place in air channel is provided with wind gage and small-sized wind power generator to be measured, wherein ventilation blower links to each other with a variable-frequence governor, variable-frequence governor links to each other with industrial computer, and wind gage links to each other with industrial computer by data collecting card with small-sized wind power generator to be measured.

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