CN102944828B - Intelligent solar cell module outdoor testing platform and testing method thereof - Google Patents
Intelligent solar cell module outdoor testing platform and testing method thereof Download PDFInfo
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Abstract
The invention discloses an intelligent solar cell module outdoor testing platform and a testing method thereof. Solar cell modules to be measured are fixed to the support of the outdoor testing platform. The platform comprises a control circuit board with a micro-processor serving as a core and electronic load having a constant voltage working mode and a constant current working mode, the electronic load is controlled, the Initial Velocity (IV) performance curve of the solar cell modules is measured, an intelligent topology circuit is controlled through the control circuit board, the switching of independent measurement and series and parallel measurement of two solar cell modules is achieved, collected data are stored in a high-capacity storage module of the platform in accordance with a proposed solar cell module outdoor testing process, and the data are transmitted to a remote-control computer through network communication. The working situation of the solar cell modules in the outdoor environment can be reflected truly, and the performance of solar cell modules can be evaluated effectively.
Description
Technical field
The invention belongs to electrotechnics, energy technology field, what be specifically related to is a kind of intelligent solar battery component outdoor test platform and method of testing thereof.
Background technology
Along with the develop rapidly of science and technology; demand both at home and abroad for the energy increases day by day; especially after entering 21 century; energy problem is just becoming the major issue of the aspects such as society, economy, environment; therefore new forms of energy are paid attention to further; solar energy, as the green renewable resource of one, plays day by day important role in world's energy crisis.Domestic photovoltaic industrial boom in recent years, the photovoltaic module output of each photovoltaic enterprise increases year by year, the reliability of photovoltaic module is improved day by day, simultaneously in order to adapt to the requirement of international market, for produced solar components at different conditions performance accurately and comprehensively measure, become requisite step in the production procedure of each photovoltaic enterprise.
The cell piece of current domestic photovoltaic enterprise and module testing environment, mainly based on the solar simulator of indoor, control cell piece and the environment residing for assembly artificially, solar battery sheet or photovoltaic module IV characteristic curve is under various circumstances obtained with this, and carry out measuring to it and draw, it is advantageous that, can Artificial Control irradiance, temperature, the operating environment requirements such as stress suffered by assembly, various severe test environment can be simulated simultaneously, obtain the adaptable extreme operating conditions of assembly.But it exists obvious defect, sunlight and the actual light of lab simulation are distinct, because environment is artificial simulation, effectively can not reflect the time of day of assembly out of doors under complex work environment.Therefore, the outdoor test platform setting up photovoltaic module seems very important to the IV characteristic curve test experiments that it carries out under outdoor environment.
Summary of the invention
For the deficiency that prior art exists, the invention provides a kind of intelligent solar battery component outdoor test platform and method of testing thereof, the situation under solar module series and parallel and independent role can be tested by topology, the electronic load of constant current constant voltage two kinds of changeable mode of operations, control circuit board controls the switching of intelligent topological circuit and electronic load constant pressure and flow pattern.
To achieve these goals, the present invention realizes by the following technical solutions:
A kind of intelligent solar battery component outdoor test platform, is characterized in that: it comprises can carry out intelligent topological circuit that adjustment angle and the solar module support of position, the electronic load with constant pressure and flow two kinds of mode of operations, the solar module be arranged on solar module support be connected with load and control circuit board; Described solar module is connected with electronic load by intelligent topological circuit, and described electronic load is directly connected with control circuit, and described intelligent topological circuit controls to switch by control circuit.Wherein, what power set adopted is motor.
Described solar module support comprises aluminium alloy bearing and solar module fixed head, bearing has the rotary freedom of level, the rotation of 0 ° to 360 ° can be realized, assembly fixed head has vertical rotary freedom, solar module can be realized by vertical (90 °) transformation to level (180 °), by with bearing horizontally rotate acting in conjunction realize solar module towards comprehensive change.Coding disk is equipped with respectively at bearing and supporting revolving shaft and fixed rotating shaft place, by machine operation, supporting revolving shaft and fixed rotating shaft are rotated, its rotational angle is corresponding with the coding disk signal of telecommunication, and the signal of telecommunication is delivered to CPU module through signal conditioning circuit, can control and obtain the relevant position of solar module support and fixed head in real time; Solar module is fixed on cradle top, with support adjustable-angle, is connected in intelligent topological circuit by the positive output end of solar module and negative output terminal.At assembly fixed head edge, irradiance sensor is housed, the irradiance parameter of acquisition is sent to CPU module through signal conditioning circuit.
Described intelligent topological circuit is, two groups of solar modules are connected with intelligent switch by positive and negative output, by intelligent switching control component string intelligent topological circuit in parallel, be convenient to individually measure or series-parallel circuit handover measurement two groups of solar modules; Each intelligent switch is directly controlled by control circuit board, to realize on-off control circuit topology conversion.
The described electronic load with constant current, the switching of constant voltage mode of operation, comprises electronic load circuit and control signal modulate circuit; Described electronic load is the feedback control circuit that the low conducting MOSFET of operational amplifier and N raceway groove forms, and the positive-negative input end of electronic load connects the positive-negative input end of intelligent topological circuit respectively, thus is connected with solar module; Described control signal modulate circuit is connected with control circuit board, by after control signal process to control electronic load operating state.
Described control circuit board, comprises CPU module, AD signal conditioning circuit, signal conditioning circuit, D/A module, real-time clock module, irradiance measurement module, temperature-measuring module, LCD LCD MODULE, SD card memory module, network communication module; The dsp chip TMS320F28027 that described CPU module is produced with TI company is for core controller; The silicon irradiance sensor that described irradiance measurement module adopts IMT Solar company to produce, with solar module juxtaposition; Described temperature-measuring module have employed multiple Pt100 platinum resistance thermometer sensor, as temperature sensor, is placed in solar module back and air respectively; Described irradiance outputs signal with temperature sensor and coding disk and is all connected with CPU module via signal conditioning circuit, D/A module is connected with CPU module by I2C bus with real-time clock module, LCD display module, high-capacity storage module and network communication module are connected with CPU module by spi bus, CPU module, via network communication module, is connected with wireless router.
A kind of solar module outdoor test method, based on above-mentioned solar module outdoor test platform, solar module outdoor test method step is as follows:
(1) intelligent topological circuit is controlled by control circuit board, make the first single-way switch, the 3rd single-way switch conducting, second single-way switch, bidirectional switch disconnect, and realize two groups of solar modules and are connected with load respectively and measure 2 groups of solar module independent roles respectively.Measure the solar irradiance of environment residing for current single solar module, battery component temperature, ambient temperature, and record data;
(2) measure the short circuit current Isc of solar module in current environment and open circuit voltage Voc, calculate its approximate maximum power point place operating voltage Vapp, respective formula is as follows:
Vapp＝kVoc；
Wherein k gets 0.8; According to Vapp value, may need the working point Ncv ' measured under calculating constant voltage mode, formula is as follows:
If Ncv ' is less than 128, then measure the value of Ncv for rounding Ncv ' of counting under constant voltage mode; If Ncv ' is more than or equal to 128, then get Ncv=128; The change in voltage step delta V that electronic load controls under constant voltage mode can be calculated by Ncv:
(3), under making electronic load be operated in constant voltage mode, measurement solar module works in current value Iapp during Vapp;
(4) by Iapp value, the points N cc ' that electronic load may need to measure under constant current mode can be calculated:
If Ncc ' is less than 128, then measuring the Ncc that counts under constant current mode is the value that Ncc ' rounds; If Ncc ' is more than or equal to 128, remove Ncc=128; The current steps Δ I that load controls under constant current mode is calculated by Ncc:
(5) under constant voltage mode, change to Vapp by controlling electronic load operating voltage by 0, step-length is Δ V; Switching electronic load is again constant current mode, controls its operating current, changes to 0 by Iapp, and step-length is Δ I; Control circuit board passes through AD sampling module, the IV curve data of record solar energy battery component;
(6) after IV curved measurement completes, again to solar irradiance in current environment, ambient air temperature, assembly temperature is measured, and record data;
(7) by the IV characteristic curve obtained, solar module short circuit current Isc is calculated, open circuit voltage Voc, maximum power point power P m, maximum power point place current value Im, maximum power point place magnitude of voltage Vm, the characteristic parameters such as activity coefficient FF;
(8), after all data processings also store, repeat (1) step, carry out the solar module IV curved measurement of subsequent time;
(9) when needs adjust platform travel direction, rotational support rotating shaft and fixed rotating shaft, accurately control solar module rotational angle and present position by coding disk, and synchronous signal is delivered to CPU and stores, then carries out the step of above-mentioned 1-8;
(10) intelligent topological circuit is controlled by control circuit board, second single-way switch closes, bidirectional switch conducting, first single-way switch and the 3rd single-way switch disconnect, two groups of solar modules are made to be in two series connection, repeat above-mentioned 1-9 step, measure the IV characteristic curve after 2 groups of solar module series connection, and records store data; By intelligent topological circuit, first single-way switch and the 3rd single-way switch conducting, bidirectional switch conducting, second single-way switch disconnects, two groups of solar modules are made to be in two parallel connection, repeat above-mentioned 1-9 step, measure the IV characteristic curve after 2 groups of solar module parallel connection connection, and records store data;
Wherein, control circuit carried out single pass every 5 seconds to the IV curve of solar module, the curve data measured and environmental parameter was stored in SD card, and pass through Ethernet interface, through wireless router, with upper machine communication, by deposit data in the database of host computer.
The present invention passes through technique scheme, solar module string can be tested, situation under in parallel and independent role, the electronic load of constant current constant voltage two kinds of changeable mode of operations, control circuit board controls the switching of intelligent topological circuit and electronic load constant pressure and flow pattern, the current measured angle position residing for solar module can be shown in real time, current environment factor (solar irradiance and assembly, ambient temperature), the important parameters such as the output characteristic curve of solar module, it can reflect the working condition of solar module out of doors under environment really, achieve the IV characteristic curve test experiments under outdoor environment, effectively realize the assessment of solar module performance.
Accompanying drawing explanation
The present invention is described in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the specific embodiments of intelligent solar outdoor test platform of the present invention;
The structural representation of the intelligent solar battery component outdoor test platform support that Fig. 2 is the present invention when being assembly fixed head plumbness;
The structural representation of the intelligent solar battery component outdoor test platform support that Fig. 3 is the present invention when being assembly fixed head level;
Fig. 4 is solar module connection in series-parallel of the present invention intelligence topological circuit schematic diagram;
Fig. 5 is solar module electronic load circuit schematic diagram of the present invention;
Fig. 6 is solar module workflow diagram of the present invention.
Embodiment
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the present invention further.
As shown in Figure 1, intelligent solar battery component outdoor test platform of the present invention, it comprises solar module support, intelligence topological circuit, electronic load and control circuit board, fixing means on solar module support, it can realize the rotation of solar module all-dimensional multi-angle, intelligentized adaptation Different periods irradiation situation, the intelligence topology of solar module and load circuit, solar module string can be tested by topology, situation under in parallel and independent role, the electronic load of constant current constant voltage two kinds of changeable mode of operations, control circuit board controls the switching of intelligent topological circuit and electronic load constant pressure and flow pattern.
In the present embodiment, control circuit board comprises CPU module, D/A module, AD sample modulate circuit, coding disk module, LCD display module, Large Copacity storage module and clock module; Described CPU module is connected to electronic load via D/A module, electronic load output access AD sampling modulate circuit, the irradiance sensor of measurement environment factor, each temperature sensor, for determining that the coding disk module of solar module present position is connected with CPU module by signal sampling modulate circuit; Described Large Copacity storage module, LCD module, clock module are directly connected with CPU module with mixed-media network modules mixed-media; Wherein, mixed-media network modules mixed-media is connected with remote control computer router by test platform router, and is connected to remote control computer.
Above-mentioned CPU module is the dsp chip TMS320F28027 that TI company produces, and its built-in 12 bit A/D converters, can realize the sampling to each road analog signal, and carry out the conditioning of corresponding signal data.Wherein, the signal carrying out sampling and nursing one's health is needed to comprise: the load voltage of electronic load input, through the load current of electronic load, the assembly temperature of two groups of solar modules, ambient temperature, solar irradiance, the angle that the solar module obtained by coding disk turns over and present position.After DSP samples each road analog signal, Measuring Time, IV characteristic curve data, environmental parameter, the assembly anglec of rotation and present position are stored in SD card by spi bus; Meanwhile, DSP adjusts through the operating state of D/A module to electronic load, realizes the characteristic measurement of IV, thus changes the working point of solar module, makes it be operated on maximum power point; The mixed-media network modules mixed-media of outdoor test platform and the common access network of remote control computer, even if make DSP the data that the same day measures can be sent to remote control computer, and deposit in a database; The LCD of outdoor test platform can show the important parameter such as output characteristic curve of the current measured angle position residing for solar module, current environment factor (solar irradiance and assembly, ambient temperature), solar module in real time.Wherein Large Copacity storage module can select SD card etc., and network can select WLAN (wireless local area network).
As shown in Figures 2 and 3, solar module support comprises the bearing 101 be positioned on outdoor surfaces, the supporting revolving shaft 103 be arranged on bearing 101, drives the power set of supporting revolving shaft 103, is arranged on the top support 104 on supporting revolving shaft 103 and is arranged on the assembly fixed head 106 of also adjustable angle and position in top support 104; Top support 104 is also provided with fixed rotating shaft 105, and described assembly fixed head 104 is connected with fixed rotating shaft 105 by push rod, and the edge of assembly fixed head 106 is also provided with irradiance sensor 107.Solar module support also comprises for the scalable fixed lever 102 of fixing fixed rotating shaft 105 with assembly fixed head 106, and described scalable fixed lever 102 one end coupling assembling fixed head 106, its other end connects the bottom of supporting revolving shaft 103.
In the present embodiment, bearing 101 is positioned over ground, the position that bearing is installed supporting rotating shaft 102 is equipped with coding disk, for controlling the angle during rotation of driven by motor supporting revolving shaft 103, its precision controlling, at 1 °, sends angle residing for solar module and position to CPU by the signal of telecommunication simultaneously.Top support 104, above has fixed rotating shaft 105, only has coding disk equally, is fixed by support bar and assembly fixed head 106.The position that top support 104 is installed fixed rotating shaft 105 is provided with coding disk, the control that pivot realizes required angle is controlled with this, its scope 90 ° ~ 180 °, rotated angle is accurately controlled by coding disk, and signal transmission is stored to CPU module, realize that test platform is comprehensive, the operating state of multi-angle.
Assembly fixed head is equipped with irradiance sensor 107, and at solar module back, temperature sensor PT100 is housed, irradiance and the temperature data of acquisition are sent to CPU module.Solar module is installed on assembly fixed head, by the acting in conjunction of supporting revolving shaft 103 and fixed rotating shaft 105, can realize that test platform is comprehensive, the operating state of multi-angle.
Wherein, the equal aluminium alloy of material of bearing 101, supporting revolving shaft 103 and support bar is light and have certain hardness.Assembly fixed head 106 can select monocrystalline silicon component palette, but also not limiting material, need also can select polysilicon members plate, film battery assembly plate etc. according to test.
Two groups of solar modules and load connection in series-parallel intelligence topological circuit as shown in Figure 4.This intelligent topological circuit comprises the first electronic load 203, second electronic load 204 and the first solar module 201, second solar module 202 be connected in parallel, at the first solar module 201 and be connected to the first single-way switch 205 and the second single-way switch 206 between the second electronic load 204 and the second solar module 202, be connected with the 3rd single-way switch 207 between second solar module 202 and the first electronic load 203, between the first electronic load 203 and the second electronic load 204, be connected with bidirectional switch 208.Wherein, two Battery pack assemblies i.e. the first solar module 201, second solar module 202, and its output line is connected with the first electronic load 203, second electronic load 204 through the first single-way switch 205, second single-way switch 206, the 3rd single-way switch 207 and bidirectional switch 208.Wherein, the first single-way switch 205, second single-way switch 206 and the 3rd single-way switch 207 can select low conducting MOSFET pipe to realize the break-make of electric current, and bidirectional switch 208 can have two MOSFET pipe parallel connections to obtain.Under consideration different condition, switch selectable is selected other components and parts such as relay and is replaced.
When the first single-way switch 205 and the 3rd single-way switch 207 conducting, when the second single-way switch 206 and bidirectional switch 208 disconnect, two groups of solar modules can be realized and be connected with load respectively, test respective working condition.When the first single-way switch 205 and the 3rd single-way switch 207 conducting, bidirectional switch 208 conducting, when the second single-way switch 206 disconnects, is realized two groups of modules in parallel and connects, can be tested the working condition under two groups of modules in parallel states by adjustment load.When the second single-way switch 206 closes, bidirectional switch 208 conducting, when the first single-way switch 205 and the 3rd single-way switch 207 disconnect, can be realized two groups of assemblies and be connected in series the working condition can tested by adjustment load under two groups of solar module series connection.
As shown in Figure 5, it is solar module electronic load circuit figure, can carry out the switching of constant voltage mode and constant current mode.
When being operated in constant voltage mode, the grid low-voltage of MOSFET pipe Q9, not conducting between source electrode and drain electrode, MOSFET pipe Q10 provides high voltage to grid by control circuit, and make its source electrode and drain electrode conducting, whole circuit working is at constant voltage mode.Now, the given specified control voltage (DA_CV) of the negative input end of operational amplifier U8A, operational amplifier output terminal receives the base stage of triode Q11 through resistance R20 and diode D4, the grid of the N-channel MOS FET pipe of the output termination parallel connection of triode, the drain electrode of MOSFET pipe connects the positive output end of solar module, source electrode connects the reference resistance of low resistance, and the drain electrode of MOSFET accesses the in-phase input end of operational amplifier after divider resistance R18, R19.Thus, stable output voltage can be obtained in drain electrode place of MOSFET pipe.
When being operated in constant current mode, the grid low-voltage of MOSFET pipe Q10, not conducting between source electrode and drain electrode, MOSFET pipe Q9 provides high voltage to grid by control circuit, and make its source electrode and drain electrode conducting, whole circuit working is at constant current mode.Now, the given specified control voltage (DA_CC) of the positive input terminal of operational amplifier U8B, the output of operational amplifier is through resistance R24 and diode D5, be connected to the base stage of triode Q12, the emitter of triode Q12 connects the grid of N-channel MOS FET pipe Q9 in parallel, and the positive input terminal of solar module is accessed in the drain electrode of MOSFET pipe Q9, the source electrode of MOSFET pipe Q9 receives the inverting input of operational amplifier U8A through resistance R23.Thus, stable output voltage can be obtained at the source electrode place of paralleling MOS FET pipe.
Wherein, the control voltage that operational amplifier U8A positive input terminal and U8B negative input end provide is provided after amplifying circuit by the DA chip on control circuit board.Resistance R17 and electric capacity C22, resistance R22 and electric capacity C24, resistance R19 and electric capacity C23 plays the effect of filter rectification respectively.Take multiple MOSFET pipe in parallel effect, the effect of shunting can be played, prevent the working temperature of single MOSFET pipe too high.The output of two operational amplifiers U8A, U8B is received in the drain electrode of MOSFET pipe Q9, Q10 respectively, and its grid receives control circuit, and when control circuit is to Q9 grid low level, during Q10 grid high level, circuit is in constant voltage mode of operation; When control circuit is to Q10 grid low level, during Q9 grid high level, circuit is in constant current mode.
Fig. 6 is a kind of workflow diagram of intelligent solar battery component outdoor test platform.This method of testing step is as follows:
(1) intelligent topological circuit is controlled by control circuit board, make the first single-way switch 205 and the 3rd single-way switch 207 conducting, second single-way switch 206 and bidirectional switch 208 disconnect, realize two groups of solar modules to be connected with load respectively, measure 2 groups of solar module independent roles respectively.Measure the solar irradiance of environment residing for current single solar module, battery component temperature, ambient temperature, and record data;
(2) measure the short circuit current Isc of solar module in current environment and open circuit voltage Voc, calculate its approximate maximum power point place operating voltage Vapp, respective formula is as follows:
Vapp＝kVoc；
Wherein k gets 0.8; According to Vapp value, may need the working point Ncv ' measured under calculating constant voltage mode, formula is as follows:
If Ncv ' is less than 128, then measuring the Ncv that counts under constant voltage mode is the value that Ncv ' rounds; If Ncv ' is more than or equal to 128, then get Ncv=128; The change in voltage step delta V that electronic load controls under constant voltage mode can be calculated by Ncv:
(3), under making electronic load be operated in constant voltage mode, measurement solar module works in current value Iapp during Vapp;
(4) by Iapp value, the points N cc ' that electronic load may need to measure under constant current mode can be calculated:
If Ncc ' is less than 128, then measuring the Ncc that counts under constant current mode is the value that Ncc ' rounds; If Ncc ' is more than or equal to 128, get Ncc=128; The current steps Δ I that load controls under constant current mode is calculated by Ncc:
(5) under constant voltage mode, change to Vapp by controlling electronic load operating voltage by 0, step-length is Δ V; Switching electronic load is again constant current mode, controls its operating current, changes to 0 by Iapp, and step-length is Δ I; Control circuit board passes through AD sampling module, the IV curve data of record solar energy battery component;
(6) after IV curved measurement completes, again to solar irradiance in current environment, ambient air temperature, assembly temperature is measured, and record data;
(7) by the IV characteristic curve obtained, solar module short circuit current Isc is calculated, open circuit voltage Voc, maximum power point power P m, maximum power point place current value Im, maximum power point place magnitude of voltage Vm, the characteristic parameters such as activity coefficient FF;
(8), after all data processings also store, repeat (1) step, carry out the solar module IV curved measurement of subsequent time;
(9) when needs adjust platform travel direction, rotational support rotating shaft 103 and fixed rotating shaft 105, by the accurate control assembly rotational angle of coding disk and present position, synchronous signal is delivered to CPU and stores, then carries out the step of above-mentioned 1-8;
(10) intelligent topological circuit is controlled by control circuit board, second single-way switch 206 closes, bidirectional switch 208) conducting, switch first single-way switch the 205, the 3rd single-way switch 207 disconnects, two groups of solar modules are made to be in two series connection, repeat above-mentioned 1-9 step, measure the IV characteristic curve after 2 groups of solar module series connection, and records store data; By intelligent topological circuit, first single-way switch 205, the 3rd single-way switch 207 conducting, bidirectional switch 208 conducting, second single-way switch 206 disconnects, two groups of solar modules are made to be in two parallel connection, repeat above-mentioned 1-9 step, measure the IV characteristic curve after 2 groups of solar module parallel connection connection, and records store data.
Control circuit carried out single pass every 5 seconds to the IV curve of battery component, the curve data measured and environmental parameter are stored in SD card, and by Ethernet interface, through wireless router, with upper machine communication, by deposit data in the database of host computer.
Based on above-mentioned, measured solar module is fixed on the support of outdoor test platform by the present invention, containing the control circuit board taking microprocessor as core, there is the electronic load of constant pressure and flow two kinds of mode of operations, measuring by controlling the IV characteristic curve of electronic load to solar module; Control intelligent topological circuit by control circuit board, realize the switching that two battery component independent measurements and series, parallel are measured; Simultaneously according to proposed solar module outdoor test flow process, by collected data storing in the Large Copacity storage module of platform, simultaneously by network service, data are sent in remote control computer.The present invention can reflect the working condition of solar module out of doors under environment really, effectively realizes the assessment of solar module performance.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (8)
1. an intelligent solar battery component outdoor test platform, is characterized in that: it comprises can carry out intelligent topological circuit that adjustment angle and the solar module support of position, the electronic load with constant pressure and flow two kinds of mode of operations, the solar module be arranged on solar module support be connected with load and control circuit board, described solar module is connected with electronic load by intelligent topological circuit, and described electronic load is directly connected with control circuit, and described intelligent topological circuit controls to switch by control circuit, described intelligent topological circuit comprises the first electronic load (203) be connected in parallel, second electronic load (204) and the first solar module (201), second solar module (202), described first solar module (201) and be connected to the first single-way switch (205) and the second single-way switch (206) between the second electronic load (204) and the second solar module (202), the 3rd single-way switch (207) is connected with between described second solar module (202) and the first electronic load (203), bidirectional switch (208) is connected with between described first electronic load (203) and the second electronic load (204),
What described first electronic load (203), the second electronic load (204) all adopted is feedback control circuit, and described feedback control circuit comprises operational amplifier (U8A, U8B), MOSFET manages (Q9, Q10), diode (D4, D5), divider resistance (R18, R19, R20, R23, R24) and triode (Q11, Q12);
When working in constant voltage mode, described operational amplifier U8A output is through the base stage of resistance R20 and diode D4 connecting triode Q11, the emitter of described triode Q11 receives the grid of multiple paralleling MOS FET pipe Q9, the drain electrode of described MOSFET pipe Q9 is connected to the in-phase input end of operational amplifier U8A through divider resistance R18 and divider resistance R19, the inverting input of the D/A model calling operational amplifier U8A of described control circuit;
Work in constant current mode, the output of described operational amplifier U8B is through the base stage of divider resistance R24 and diode D5 connecting triode Q12, the emitter of described triode Q12 receives the grid of multiple paralleling MOS FET pipe Q10, the drain electrode of MOSFET pipe Q10 connects the positive input terminal of the first solar module (201), the second solar module (202), the source electrode of described MOSFET pipe Q10 receives the inverting input of operational amplifier U8B through divider resistance R23, the normal phase input end that the D/A module of described control circuit receives operational amplifier U8B connects; Be connected to the drain electrode of MOSFET pipe Q9, MOSFET pipe Q10 respectively by divider resistance R20, divider resistance R24 at the output of operational amplifier U8A, operational amplifier U8B, the grid of MOSFET pipe Q9 and MOSFET pipe Q10 is connected to control circuit, for controlling the switching of constant pressure and flow two kinds of patterns; The positive input terminal of the first solar module (201), the second solar module (202) receives the drain electrode of MOSFET pipe Q10 in parallel through intelligent topological circuit, the negative input end of the first solar module (201), the second solar module (202) receives canonical reference grounding through resistance end.
2. a kind of intelligent solar battery component outdoor test platform according to claim 1, it is characterized in that, described solar module support comprises the bearing (101) be positioned on outdoor surfaces, the supporting revolving shaft (103) be arranged on bearing (101), drives the power set of supporting revolving shaft (103), is arranged on the top support (104) on supporting revolving shaft (103) and is arranged on the assembly fixed head (106) of top support (104) upper also adjustable angle and position; Described top support (104) is also provided with fixed rotating shaft (105), described assembly fixed head (106) is connected with fixed rotating shaft (105) by push rod, and the edge of described assembly fixed head (106) is also provided with irradiance sensor (107).
3. a kind of intelligent solar battery component outdoor test platform according to claim 2, it is characterized in that, described solar module support also comprises for the scalable fixed lever (102) of fixing fixed rotating shaft (105) with assembly fixed head (106), described scalable fixed lever (102) one end coupling assembling fixed head (106), its other end connects the bottom of supporting revolving shaft (103).
4. a kind of intelligent solar battery component outdoor test platform according to claim 3, it is characterized in that, described bearing (101) is installed the position of the position of supporting revolving shaft (103) and top support (104) being installed fixed rotating shaft (105) and be all also provided with coding disk for accurately measuring institute's rotational angle, described coding disk accurately controls rotated angle, and signal transmission is stored to CPU module, realize that test platform is comprehensive, the operating state of multi-angle.
5. a kind of intelligent solar battery component outdoor test platform according to claim 1, it is characterized in that, described control circuit board comprises CPU module, D/A module, AD sample modulate circuit, coding disk module, LCD display module, Large Copacity storage module and clock module; Described CPU module is connected to electronic load via D/A module, electronic load output access AD sampling modulate circuit, the irradiance sensor of measurement environment factor, each temperature sensor, for determining that the coding disk module of solar module present position is connected with CPU module by signal sampling modulate circuit; Described Large Copacity storage module, LCD module, clock module are directly connected with CPU module with mixed-media network modules mixed-media; Wherein, mixed-media network modules mixed-media is connected with remote control computer router by test platform router, and is connected to remote control computer.
6. based on a method of testing for the solar module outdoor test platform described in claim 1 to 5 any one, it is characterized in that: its method of testing step is as follows:
(1) intelligent topological circuit is controlled by control circuit board, make the first single-way switch (205), the 3rd single-way switch (207) conducting, second single-way switch (206), bidirectional switch (208) disconnect, realize two groups of solar modules to be connected with load respectively, measure many group solar module independent roles respectively; Then the solar irradiance of environment residing for current single solar module is measured, battery component temperature, ambient temperature, and record data;
(2) measure the short circuit current Isc of solar module in current environment and open circuit voltage Voc, calculate its approximate maximum power point place operating voltage Vapp;
(3), under making electronic load be operated in constant voltage mode, measurement solar module works in current value Iapp during operating voltage Vapp;
(4) by current value Iapp value, the points N cc ' that electronic load may need to measure under constant current mode can be calculated:
If Ncc ' is less than 128, then measure the value of Ncc for rounding Ncc ' of counting under constant current mode; If Ncc ' is more than or equal to 128, get Ncc=128; The current steps Δ I that load controls under constant current mode is calculated by Ncc:
(5) under constant voltage mode, change to Vapp by controlling electronic load operating voltage by 0, step-length is Δ V; Switching electronic load is again constant current mode, controls its operating current, changes to 0 by Iapp, and step-length is Δ I; Control circuit board passes through AD sampling module, the IV curve data of record solar energy battery component;
(6) after IV curved measurement completes, again to solar irradiance in current environment, ambient air temperature, assembly temperature is measured, and record data;
(7) by the IV characteristic curve obtained, solar module short circuit current Isc is calculated, open circuit voltage Voc, maximum power point power P m, maximum power point place current value Im, maximum power point place magnitude of voltage Vm, the characteristic parameter of activity coefficient FF;
(8), after all data processings also store, repeat (1) step, carry out the solar module IV curved measurement of subsequent time;
(9) when needs adjust platform travel direction, rotational support rotating shaft (103) and fixed rotating shaft (105), by the accurate control assembly rotational angle of coding disk and present position, synchronous signal is delivered to CPU and stores, then carries out the step of above-mentioned (1)-(8);
(10) intelligent topological circuit is controlled by control circuit board, second single-way switch (206) closes, bidirectional switch (208) conducting, first single-way switch (205) and the 3rd single-way switch (207) disconnect, two groups of solar modules are made to be in two series connection, repeat above-mentioned (1)-(9) step, measure the IV characteristic curve after the series connection of many group solar modules, and records store data.
7. the method for testing of described solar module outdoor test platform according to claim 6, it is characterized in that, in described step (2), operating voltage Vapp computing formula is as follows:
Vapp＝kVoc；
Wherein k gets 0.8; According to Vapp value, may need the working point Ncv ' measured under calculating constant voltage mode, formula is as follows:
If Ncv ' is less than 128, then measure the value of Ncv for rounding Ncv ' of counting under constant voltage mode; If Ncv ' is more than or equal to 128, then get Ncv=128; The change in voltage step delta V that electronic load controls under constant voltage mode can be calculated by Ncv:
8. the method for testing of described solar module outdoor test platform according to claim 6, it is characterized in that, described control circuit carried out single pass every 5 seconds to the IV curve of solar module, the curve data measured and environmental parameter are stored in Large Copacity storage module, and pass through Ethernet interface, through wireless router, with remote control computer communication, by deposit data in the database of remote control computer.
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| CN104467668A (en) * | 2014-12-25 | 2015-03-25 | 中国电子科技集团公司第四十一研究所 | Multi-channel photovoltaic module generating capacity test data collection system |
| CN104617876B (en) * | 2015-02-02 | 2017-01-11 | 河海大学常州校区 | Outdoor test platform of solar photovoltaic modules and electricity generation performance online analysis method thereof |
| CN104796085B (en) * | 2015-04-09 | 2017-05-03 | 中国科学院半导体研究所 | Solar cell IV testing system based on constant-current-mode electronic load |
| CN108063597A (en) * | 2016-11-08 | 2018-05-22 | 阿特斯阳光电力集团有限公司 | Photovoltaic module outdoor test system and its test method |
| CN108663568A (en) * | 2018-07-13 | 2018-10-16 | 汉能移动能源控股集团有限公司 | Solar module debugging and testing device and testing method thereof |
| CN117233625A (en) * | 2023-11-16 | 2023-12-15 | 西安图为电气技术有限公司 | Energy storage module test equipment |
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