CN103199721A - Control method for enabling solar cell array simulator to be adapted to photovoltaic inverter - Google Patents
Control method for enabling solar cell array simulator to be adapted to photovoltaic inverter Download PDFInfo
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Abstract
Provided is a control method for enabling a solar cell array simulator to be adapted to a photovoltaic inverter. According to the solar cell array simulator, a voltage-current characteristic curve is arranged on a voltage-current coordinate system, and the photovoltaic inverter is provided with a plurality of disturbance curves relative to the voltage-current coordinate system. The control method includes the following steps that a convergence parameter value and a current difference value are extracted and multiplied to produce a convergence factor, a working initial point provided with work initial currents is extracted on the intersection point of a first working disturbance curve and the voltage-current characteristic curve, a first modification point is extracted on a second working disturbance curve, a second modification point is extracted on the voltage-current coordinate system, a third modification point is extracted on the second working disturbance curve, at last a fourth modification point is extracted on the voltage-current coordinate system, and whether the fourth modification point falls outside a convergence interval is judged.
Description
Technical field
The present invention relates to the control method that a kind of solar battery array simulator adapts to photovoltaic DC-to-AC converter, be particularly related to a kind of calculation by convergence factor, and power-voltage curve that solar battery array simulator and photovoltaic DC-to-AC converter are operated reaches the control method of convergence.
Background technology
Solar battery array can directly be converted to DC power supply with solar energy, if need be converted into alternating current in order to generating, must reach by photovoltaic DC-to-AC converter.Yet, photovoltaic DC-to-AC converter has different disturbance characteristics, so different solar battery arrays needs and suitable photovoltaic DC-to-AC converter coupling, just can reach maximum power usefulness, thereby how to come the output voltage current curve of analog solar array with DC power supply now, and be applied to the maximum power tracing usefulness simulation of photovoltaic DC-to-AC converter simultaneously.In the process of this simulation calculation, DC power supply generally all adopts CV/CC Mode control mode, and the cooperation look-up table is reached the control to voltage-current curve, but because the photovoltaic DC-to-AC converter of different disturbance characteristics has different disturbance control modes, as the perturbation scheme of CV/CC/CP/CR Mode etc., will be example with the photovoltaic DC-to-AC converter of CR Mode perturbation scheme and the DC power supply of CC Mode control mode below.
See also Fig. 1 and Fig. 2, Fig. 1 shows the voltage-to-current curve controlled schematic diagram of prior art, and Fig. 2 shows the power-voltage curve convergence schematic diagram of prior art.As shown in the figure, in the voltage-to-current curve chart, the changing operate-point track that R1 is the first work disturbance curve of photovoltaic DC-to-AC converter (not shown), the second work disturbance curve that R2 is photovoltaic DC-to-AC converter and A, B, C, D and E point when working disturbance curve R2 by the first work disturbance curve R1 disturbance to the second, wherein, the voltage-current characteristic line 10 of solar battery array (not shown) is taken from the tangent line of maximum power tracing point, and the slope of the second work disturbance curve R2 is greater than the slope of the voltage-current characteristic line 10 of solar battery array.
Suppose that A is the job initiation point, when photovoltaic DC-to-AC converter is worked disturbance curve R2 by the first work disturbance curve R1 disturbance to the second, because the DC power supply (not shown) is constant current mode (CC Mode) control mode, the working point can be put A by job initiation and be moved to the first adjusting point B, then control algorithm convergence in the voltage-current characteristic line of solar battery array by look-up table, therefore the working point can move to the second adjusting point C by the first adjusting point B, same, because DC power supply is to be the constant current mode control mode, the working point can move to the 3rd adjusting point D by the second adjusting point C, at last, control algorithm convergence in the voltage-current characteristic line of solar battery array by look-up table, therefore the working point can move to the 4th adjusting point E by the 3rd adjusting point D, and then converge in the interval of the first work disturbance curve R1 and the second work disturbance curve R2, make DC power supply can finish the solar battery array analog functuion smoothly, and then in power-voltage coordinate system, simulate Convergence Distributed Power-voltage curve 20.
See also Fig. 3 and Fig. 4, Fig. 3 shows the voltage-to-current curve controlled schematic diagram of prior art, and Fig. 4 shows that the power-voltage curve of prior art disperses schematic diagram.As shown in the figure, in the voltage-to-current curve chart, R1 is that the first work disturbance curve, the R2 of photovoltaic DC-to-AC converter is the second work disturbance curve of photovoltaic DC-to-AC converter, and A, B, C, D and E point are the changing operate-point track when working disturbance curve R2 by the first work disturbance curve R1 disturbance to the second, wherein, the voltage-current characteristic line 10 of solar battery array is taken from the tangent line of maximum power tracing point, and the slope of the second work disturbance curve R2 is less than the slope of the voltage-current characteristic line 10 of solar battery array.
Suppose that A is the job initiation point, when photovoltaic DC-to-AC converter is worked disturbance curve R2 by the first work disturbance curve R1 disturbance to the second, because DC power supply is the constant current mode control mode, the working point can move to the B point by the A point, then control algorithm convergence in the voltage-current characteristic line of solar battery array by look-up table, therefore the working point can move to the C point by the B point, same, because DC power supply is the constant current mode control mode, the working point can move to the D point by the C point, yet, controlling algorithm convergence behind the voltage-current characteristic line of solar battery array by look-up table, its working point can move to the E point by the D point, and then can't converge in the interval of the first work disturbance curve R1 and the second work disturbance curve R2, therefore can make DC power supply can't finish the solar battery array simulation and lost efficacy, and then in power-voltage coordinate system, simulate and disperse power-voltage curve 30.
Comprehensive the above, believe in affiliated technical field, to have such as and know that usually the knowledgeable should be understood that in the prior art, in DC power supply analog solar array process, might be because the slope of different voltage-current characteristic lines, and make that in the power-voltage curve of power-voltage coordinate system the problem of inefficacy can appear in simulation.
Summary of the invention
Technical problem and purpose that institute of the present invention desire solves:
Because in above-mentioned prior art, ubiquity may be because the slope of the different voltage-current curve of solar battery array, and makes in the power-voltage curve of power-voltage coordinate system, and the problem that lost efficacy can appear in simulation.
Edge this, the invention provides the control method that a kind of solar battery array simulator adapts to photovoltaic DC-to-AC converter, by adding the calculation adjustment of convergence factor, and allow solar battery array simulator and power-voltage curve of photovoltaic DC-to-AC converter running restrain.
The technological means that the present invention deals with problems:
The present invention provides the control method that a kind of solar battery array simulator adapts to a photovoltaic DC-to-AC converter for the necessary technology means that the solution prior art problems adopts, this solar battery array simulator is to have a voltage-current characteristic curve at a voltage-to-current coordinate system, and this photovoltaic DC-to-AC converter has a plurality of disturbance curves corresponding to this voltage-to-current coordinate system, this control method comprises following steps: at first on the voltage-to-current coordinate system, acquisition one first work disturbance curve and one second work disturbance curve in those disturbance curves, and between the first work disturbance curve and the second work disturbance curve, define an interval of convergence, then capture job initiation point at the intersection point place of the first work disturbance curve and voltage-current characteristic curve, and the job initiation point has a job initiation electric current.
Afterwards at the second work disturbance curve acquisition, one first adjusting point, and first adjusting point has job initiation electric current and one first and revises voltage, then at voltage-current characteristic curve acquisition one second adjusting point, and second adjusting point has first and revises voltage and one first correcting current, afterwards at the second work disturbance curve acquisition, one the 3rd adjusting point, and the 3rd adjusting point has first correcting current and one second and revises voltage, then at voltage-current characteristic curve acquisition one the 4th adjusting point, and the 4th adjusting point has second and revises voltage and one second correcting current, judges afterwards whether the 4th adjusting point falls within outside the interval of convergence.
Then when the 4th adjusting point falls within outside the interval of convergence, acquisition one convergence parameter value and a current difference value of approaching the voltage-current characteristic curve, and it is multiplied each other and produce a convergence factor, then at the intersection point place of the first work disturbance curve and voltage-current characteristic curve acquisition job initiation point, and the job initiation point has the job initiation electric current, then at the second work disturbance curve acquisition, first adjusting point, and first adjusting point has job initiation electric current and first and revises voltage, then at voltage-to-current coordinate system acquisition second adjusting point, and second adjusting point has first and revises voltage and one the 3rd correcting current, and the 3rd correcting current is to be produced by first correcting current and convergence factor addition.
Then at the second work disturbance curve acquisition, one the 3rd adjusting point, and the 3rd adjusting point has the 3rd correcting current and the 3rd and revises voltage, at last at voltage-to-current coordinate system acquisition one the 4th adjusting point, and the 4th adjusting point has the 3rd and revises voltage and one the 4th correcting current, and the 4th correcting current is to be produced by second correcting current and convergence factor addition.
The present invention's effect against existing technologies:
The invention provides the control method that a kind of solar battery array simulator adapts to photovoltaic DC-to-AC converter, because when its calculation is dispersed, i.e. acquisition restrains parameter value and current difference value, and it is multiplied each other and produce convergence factor, by adding the calculation adjustment of convergence factor, can allow power-voltage curve restrain gradually, and then simulate solar battery array in power-voltage curve.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 shows the voltage-to-current curve controlled schematic diagram of prior art;
Fig. 2 shows the power-voltage curve convergence schematic diagram of prior art;
Fig. 3 shows the voltage-to-current curve controlled schematic diagram of prior art;
Fig. 4 shows that the power-voltage curve of prior art disperses schematic diagram;
Fig. 5 shows the solar battery array simulator of preferred embodiment of the present invention and the block diagram of photovoltaic DC-to-AC converter;
Fig. 6 and Fig. 6 A show the power-voltage curve calculation method flow chart of preferred embodiment of the present invention;
Fig. 7 shows voltage-current characteristic curve and the disturbance curve synoptic diagram of preferred embodiment of the present invention;
Fig. 8 and Fig. 8 A show the power-voltage curve calculation method schematic diagram of preferred embodiment of the present invention.
Wherein, Reference numeral
1 photovoltaic DC-to-AC converter
2 solar battery array simulators
21 processing units
22 acquisition units
23 judging units
24 arithmetic elements
3 loads
The voltage-current characteristic line of 10 solar battery arrays
20 Convergence Distributed Power-voltage curve
30 disperse power-voltage curve
40,40 ' voltage-current characteristic curve
50 disturbance curves
A job initiation point
B first adjusting point
C second adjusting point
D the 3rd adjusting point
E the 4th adjusting point
The R1 first work disturbance curve
The R2 second work disturbance curve
The Voc open circuit voltage
The Isc short circuit current
Vmp maximum power voltage
Imp maximum power electric current
Δ I, Δ I ' current difference value
Embodiment
Because solar battery array simulator provided by the present invention adapts to the control method of photovoltaic DC-to-AC converter, can be widely used in various calculation instruments and measuring instrument etc., its combination execution mode is too numerous to enumerate, so give unnecessary details no longer one by one at this, only enumerate one of them preferred embodiment and specified.
See also Fig. 5 to Fig. 8 A, Fig. 5 shows the solar battery array simulator of preferred embodiment of the present invention and the block diagram of photovoltaic DC-to-AC converter, Fig. 6 and Fig. 6 A show the power-voltage curve calculation method flow chart of preferred embodiment of the present invention, Fig. 7 shows voltage-current characteristic curve and the disturbance curve synoptic diagram of preferred embodiment of the present invention, and Fig. 8 and Fig. 8 A show the power-voltage curve calculation method schematic diagram of preferred embodiment of the present invention.
As shown in Figure 5, solar battery array simulator 2 comprises a processing unit 21, an acquisition unit 22, a judging unit 23 and an arithmetic element 24.Acquisition unit 22 is electrically connected at processing unit 21, and judging unit 23 is electrically connected at acquisition unit 22, and arithmetic element 24 is electrically connected at judging unit 23, and load 3 is electrically connected at solar battery array simulator 2.
Preferred embodiment of the present invention is to utilize solar battery array simulator 2 to come the voltage-current characteristic curve of analog solar array, and photovoltaic DC-to-AC converter 1 has a plurality of disturbance curves 50 (only indicating among the figure).Wherein, below will with constant current mode (CC Mode) control mode and to decide resistance mode (CR Mode) perturbation scheme be example.
In addition, comparatively clear in order to make this preferred embodiment, below the job initiation electric current is defined as I
i, first revise voltage and be defined as V
1, first correcting current is defined as I
1, second revise voltage and be defined as V
2, second correcting current is defined as I
2, the 3rd revise voltage and be defined as V
3, the 3rd correcting current is defined as I
3And the 4th correcting current is defined as I
4, and power-voltage curve calculation method is as back:
Step S101: acquisition one first work disturbance curve and one second work disturbance curve in those disturbance curves, and between the first work disturbance curve and the second work disturbance curve, define an interval of convergence.
Step S102: the intersection point place at the first work disturbance curve and voltage-current characteristic curve captures job initiation point.
Step S103: at the second work disturbance curve acquisition, one first adjusting point.
Step S104: at voltage-current characteristic curve acquisition one second adjusting point.
Step S105: at the second work disturbance curve acquisition, one the 3rd adjusting point.
Step S106: at voltage-current characteristic curve acquisition one the 4th adjusting point.
Step S107: judge whether the 4th adjusting point falls within outside the interval of convergence.
Step S108: acquisition one convergence parameter value and the current difference value of approaching the voltage-current characteristic curve, and it is multiplied each other and produce a convergence factor.
Step S109: at the intersection point place of the first work disturbance curve and voltage-current characteristic curve acquisition job initiation point.
Step S110: at the second work disturbance curve acquisition, first adjusting point.
Step S111: at voltage-to-current coordinate system acquisition second adjusting point, and by convergence factor computing correcting current.
Step S112: at the second work disturbance curve acquisition, one the 3rd adjusting point.
Step S113: at voltage-to-current coordinate system acquisition one the 4th adjusting point, and by convergence factor computing correcting current.
Step S114: capture correction voltage and the correcting current of the 4th adjusting point, use mark one convergence data point on power-voltage coordinate system.
In above-mentioned power-voltage curve calculation method, after step begins, the voltage-current characteristic curve 40 of solar battery array simulator 2 analog solar arrays, photovoltaic DC-to-AC converter 1 has a plurality of disturbance curves 50 (only indicating among the figure), processing unit 21 namely produces voltage-current characteristic curve 40 and disturbance curve 50 schematic diagrames as shown in Figure 7 on the voltage-to-current coordinate system, and begin to calculate subsequent step, wherein, voltage-current characteristic curve 40 comprises open circuit voltage (Voc), short circuit current (Isc), maximum power voltage (Vmp) and maximum power electric current (Imp) quadrinomial parameter.
After producing voltage-current characteristic curve 40 and disturbance curve 50, enter step S101 immediately and in those disturbance curves, capture one first work disturbance curve and one second work disturbance curve, and between the first work disturbance curve and the second work disturbance curve, define an interval of convergence.Wherein, acquisition unit 22 is on the voltage-to-current coordinate system, in those disturbance curves 50 (only indicating among the figure), capture as shown in Figure 8 one first work disturbance curve R1 and one second work disturbance curve R2, in addition, acquisition unit 22 is in maximum power point (the Maximum Power Point of voltage-current characteristic curve 40; MPP) in, capture the tangent line of this point and produce voltage-current characteristic curve 40 '.Wherein, in preferred embodiment of the present invention, be to be defined as interval of convergence (not shown) between the first work disturbance curve R1 and the second work disturbance curve R2.
After acquisition unit 22 has captured, enter step S102 immediately and capture job initiation point at the intersection point place of the first work disturbance curve and voltage-current characteristic curve.Wherein, acquisition unit 22 captures a job initiation point A in the first work disturbance curve R1 and voltage-current characteristic curve 40 ' confluce, and job initiation point A has the job initiation electric current I
i
After acquisition unit 22 has captured work starting point A, enter step S103 immediately at the second work disturbance curve acquisition, one first adjusting point.Wherein, because solar battery array simulator 2 is to be the constant current mode control mode, so acquisition unit 22 can go up acquisition one first adjusting point B in the second work disturbance curve R2, and the first adjusting point B has the job initiation electric current I
iWith one first correction voltage V
1Namely because be the constant current mode control mode, the A calculation can be put to the first adjusting point B by job initiation in the working point.
After acquisition unit 22 has captured the first adjusting point B, namely enter step S104 at voltage-current characteristic curve acquisition one second adjusting point.Wherein, because desire control algorithm convergence is in voltage-current characteristic curve 40 ', so acquisition unit 22 can go up acquisition one second adjusting point C in voltage-current characteristic curve 40 ', and the second adjusting point C has first and revises voltage V
1With one first correcting current I
1
After acquisition unit 22 has captured the second adjusting point C, namely enter step S105 at the second work disturbance curve acquisition, one the 3rd adjusting point.Wherein, because solar battery array simulator 2 is to be the constant current mode control mode, so acquisition unit 22 can go up acquisition one the 3rd adjusting point D in the second work disturbance curve R2, and the 3rd adjusting point D has the first correcting current I
1With one second correction voltage V
2Namely because be the constant current mode control mode, the working point can be by second adjusting point C calculation to the 3rd adjusting point D.
After acquisition unit 22 has captured the 3rd adjusting point D, namely enter step S106 at voltage-current characteristic curve acquisition one the 4th adjusting point.Wherein, because desire control algorithm convergence is in voltage-current characteristic curve 40 ', so acquisition unit 22 can go up acquisition one the 4th adjusting point E in voltage-current characteristic curve 40 ', and the 4th adjusting point E has second and revises voltage V
2With one second correcting current I
2
After acquisition unit 22 has captured the 4th adjusting point E, namely enter step S107 and judge whether the 4th adjusting point falls within outside the interval of convergence.Wherein, judging unit 23 judges namely whether the 4th adjusting point falls within outside the interval of convergence.If judging unit 23 is judged the 4th adjusting point E and when falling within the interval of convergence, then carried out correction voltage and correcting current that step S114 captures the 4th adjusting point, use mark one convergence data point on power-voltage coordinate system.Wherein, acquisition unit 22 is that voltage V is revised in acquisition second
2With the second correcting current I
2, use mark one convergence data point on power-voltage coordinate system.
See also Fig. 5 to Fig. 7 and Fig. 8 A, Fig. 8 A shows the Convergence Distributed Power-voltage curve calculation method schematic diagram of preferred embodiment of the present invention.If it is that to fall within the interval of convergence outer that judging unit 23 is judged the 4th adjusting point E, enters step S108 acquisition one convergence parameter value and a current difference value of approaching the voltage-current characteristic curve immediately, and it is multiplied each other and produce a convergence factor.Wherein, after acquisition unit 22 acquisition one convergence parameter value and the current difference value, and arithmetic element 24 is about to restrain parameter value and current difference value and multiplies each other and produce convergence factor.In addition, comparatively clear in order to make this preferred embodiment, will restrain below that parameter value is defined as K, the current difference value defined is that Δ I and convergence factor are defined as μ, i.e. K* Δ I=μ wherein restrains parameter value K and is for less than 1.
Behind the intact convergence factor μ of arithmetic element 24 computings, processing unit 21 namely begins to calculate subsequent step, enters step S109 immediately at the intersection point place of the first work disturbance curve and voltage-current characteristic curve acquisition job initiation point.Wherein, acquisition unit 22 is on the voltage-to-current coordinate system, and in the confluce of the first work disturbance curve R1 and voltage-current characteristic curve 40 ' acquisition job initiation point A, and job initiation point A has the job initiation electric current I
i
After acquisition unit 22 has captured work starting point A, enter step S110 immediately at the second work disturbance curve acquisition, first adjusting point.Wherein, because solar battery array simulator 2 is to be the constant current mode control mode, so acquisition unit 22 can go up acquisition one first adjusting point B in the second work disturbance curve R2, and the first adjusting point B has the job initiation electric current I
iWith one first correction voltage V
1Namely because be the constant current mode control mode, the A calculation can be put to the first adjusting point B by job initiation in the working point.
After acquisition unit 22 has captured the first adjusting point B, enter step S111 immediately at voltage-to-current coordinate system acquisition second adjusting point, and by convergence factor computing correcting current.Wherein, acquisition unit 22 is at the voltage-to-current coordinate system acquisition second adjusting point C, and the second adjusting point C has the first correction voltage V
1With one the 3rd correcting current I
3The 3rd correcting current I
3Be by the first correcting current I
1Produce with convergence factor μ addition, i.e. I
3=I
1+ μ, because current difference value Δ I approaches voltage-current characteristic curve 40 ', current difference value Δ I is for negative makes that μ is negative, so I
3Via understanding than I after arithmetic element 24 computings
1Little.
After acquisition unit 22 has captured the second adjusting point C, enter step S112 immediately at the second work disturbance curve acquisition, one the 3rd adjusting point.Wherein, because solar battery array simulator 2 is to be the constant current mode control mode, so acquisition unit 22 can go up acquisition one the 3rd adjusting point D in the second work disturbance curve R2, and the 3rd adjusting point D has the 3rd correcting current I
3With one the 3rd correction voltage V
3Namely because be the constant current mode control mode, the working point can be by second adjusting point C calculation to the 3rd adjusting point D.
After acquisition unit 22 has captured the 3rd adjusting point D, enter step S113 immediately at voltage-to-current coordinate system acquisition one the 4th adjusting point, and by convergence factor computing correcting current.Wherein, acquisition unit 22 is at voltage-to-current coordinate system acquisition the 4th adjusting point E, and the 4th adjusting point E has the 3rd correction voltage V
3With one the 4th correcting current I
4The 4th correcting current I
4Be by the second correcting current I
2Produce with convergence factor μ addition, i.e. I
4=I
2+ μ, because current difference value Δ I approaches voltage-current characteristic curve 40 ', current difference value Δ I ' is for positive number makes that μ is positive number, so I
4Via understanding than I after arithmetic element 24 computings
2Greatly.
After acquisition unit 22 has captured the 4th adjusting point E, carry out step S107 immediately and judge whether the 4th adjusting point falls within outside the interval of convergence.Wherein, wherein, judging unit 23 judges namely whether the 4th adjusting point falls within outside the interval of convergence.
If it is to fall within interval interior words that judging unit 23 is judged the 4th adjusting point, carry out step S114 immediately when the 4th adjusting point falls within the interval of convergence, capture the 3rd and revise voltage and the 4th correcting current, use mark one convergence data point on power-voltage coordinate system.Wherein, acquisition unit 22 is that voltage V is revised in acquisition the 3rd
3With the 4th correcting current I
4, use mark one convergence data point on power-voltage coordinate system.
After the intact convergence of mark data point, then repeat a plurality of convergence data points of above-mentioned power-voltage curve calculation method and mark after, can simulate the power-voltage curve of convergence and not have the problem of dispersing.
What deserves to be mentioned is, if still can't calculate out for the first time power-the voltage curve of convergence by the convergence factor computing, be that the adjustment of convergence parameter value is diminished, and for example is 0.8,0.5 and 0.3 to diminish gradually to calculate power-voltage curve is restrained.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (7)
1. a solar battery array simulator adapts to the control method of a photovoltaic DC-to-AC converter, this solar battery array simulator has a voltage-current characteristic curve at a voltage-to-current coordinate system, and this photovoltaic DC-to-AC converter has a plurality of disturbance curves corresponding to this voltage-to-current coordinate system, it is characterized in that this control method comprises following steps:
(a) on this voltage-to-current coordinate system, acquisition one first work disturbance curve and one second work disturbance curve in those disturbance curves, and between this first work disturbance curve and this second work disturbance curve, define an interval of convergence;
(b) capture job initiation point at the intersection point place of this first work disturbance curve and this voltage-current characteristic curve, and this job initiation point has a job initiation electric current;
(c) at this second work disturbance curve acquisition, one first adjusting point, and this first adjusting point has this job initiation electric current and one first correction voltage;
(d) at this voltage-current characteristic curve acquisition one second adjusting point, and this second adjusting point has this first correction voltage and one first correcting current;
(e) at this second work disturbance curve acquisition, one the 3rd adjusting point, and the 3rd adjusting point has this first correcting current and one second correction voltage;
(f) at this voltage-current characteristic curve acquisition one the 4th adjusting point, and the 4th adjusting point has this second correction voltage and one second correcting current;
(g) judge whether the 4th adjusting point falls within outside this interval of convergence;
(h) in the time of outside the 4th adjusting point falls within this interval of convergence, acquisition one convergence parameter value and the current difference value of approaching this voltage-current characteristic curve, and it is multiplied each other and produce a convergence factor;
(i) capture this job initiation point at the intersection point place of this first work disturbance curve and this voltage-current characteristic curve, and this job initiation point has this job initiation electric current;
(j) at this this first adjusting point of second work disturbance curve acquisition, and this first adjusting point has this job initiation electric current and this first correction voltage;
(k) at this second adjusting point of this voltage-to-current coordinate system acquisition, and this second adjusting point has this and first revises voltage and one the 3rd correcting current, and the 3rd correcting current is produced by this first correcting current and this convergence factor addition;
(l) at this second work disturbance curve acquisition, one the 3rd adjusting point, and the 3rd adjusting point has the 3rd correcting current and one the 3rd correction voltage; And
At this voltage-to-current coordinate system acquisition one the 4th adjusting point, and the 4th adjusting point has the 3rd and revises voltage and one the 4th correcting current, and the 4th correcting current is produced by this second correcting current and this convergence factor addition.
2. solar battery array simulator according to claim 1 adapts to the control method of a photovoltaic DC-to-AC converter, it is characterized in that, also comprise step (n), in the time of in the 4th adjusting point falls within this interval of convergence, capture this second correction voltage and this second correcting current, use mark one convergence data point on the one power-voltage coordinate system of this solar battery array simulator and the running of this photovoltaic DC-to-AC converter.
3. solar battery array simulator according to claim 2 adapts to the control method of a photovoltaic DC-to-AC converter, it is characterized in that, utilizes a processing unit to calculate out this power-voltage curve, this voltage-to-current curve and those disturbance curves.
4. solar battery array simulator according to claim 1 adapts to the control method of a photovoltaic DC-to-AC converter, it is characterized in that, utilize an acquisition unit to capture this first work disturbance curve, this second work disturbance curve, this initial working point, this first adjusting point, this second adjusting point, the 3rd adjusting point, the 4th adjusting point, this convergence parameter value and this current difference value.
5. solar battery array simulator according to claim 4 adapts to the control method of a photovoltaic DC-to-AC converter, it is characterized in that, utilizes a judging unit to be electrically connected at this acquisition unit to judge whether the 4th adjusting point falls within outside this interval of convergence.
6. solar battery array simulator according to claim 4 adapts to the control method of a photovoltaic DC-to-AC converter, it is characterized in that, utilize an arithmetic element to be electrically connected at this acquisition unit to calculate this convergence factor, the 3rd correcting current and the 4th correcting current.
7. solar battery array simulator according to claim 1 adapts to the control method of a photovoltaic DC-to-AC converter, it is characterized in that, this convergence parameter value is less than 1.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106803669A (en) * | 2015-11-26 | 2017-06-06 | 致茂电子(苏州)有限公司 | To the power supply unit and its method of analog approximation solar cell |
| CN107102588A (en) * | 2017-05-25 | 2017-08-29 | 哈尔滨工业大学深圳研究生院 | Solar array simulator controls the realization method and system of outer shroud |
| CN111258234A (en) * | 2020-03-20 | 2020-06-09 | 艾德克斯电子（南京）有限公司 | Control method for solar cell array simulator to quickly adapt to photovoltaic inverter |
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| CN106803669A (en) * | 2015-11-26 | 2017-06-06 | 致茂电子(苏州)有限公司 | To the power supply unit and its method of analog approximation solar cell |
| CN106803669B (en) * | 2015-11-26 | 2019-06-04 | 致茂电子(苏州)有限公司 | Power supply unit and its method to analog approximation solar battery |
| CN107102588A (en) * | 2017-05-25 | 2017-08-29 | 哈尔滨工业大学深圳研究生院 | Solar array simulator controls the realization method and system of outer shroud |
| CN107102588B (en) * | 2017-05-25 | 2019-04-02 | 哈尔滨工业大学深圳研究生院 | The realization method and system of solar array simulator control outer ring |
| CN111258234A (en) * | 2020-03-20 | 2020-06-09 | 艾德克斯电子（南京）有限公司 | Control method for solar cell array simulator to quickly adapt to photovoltaic inverter |
| CN111258234B (en) * | 2020-03-20 | 2021-08-03 | 艾德克斯电子（南京）有限公司 | Control method for solar cell array simulator to quickly adapt to photovoltaic inverter |
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