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WO2023094555A1 - Dispositif de test de module solaire et procédé de test de module solaire - Google Patents

Dispositif de test de module solaire et procédé de test de module solaire Download PDF

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Publication number
WO2023094555A1
WO2023094555A1 PCT/EP2022/083196 EP2022083196W WO2023094555A1 WO 2023094555 A1 WO2023094555 A1 WO 2023094555A1 EP 2022083196 W EP2022083196 W EP 2022083196W WO 2023094555 A1 WO2023094555 A1 WO 2023094555A1
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WO
WIPO (PCT)
Prior art keywords
solar module
test device
solar
module
time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2022/083196
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German (de)
English (en)
Inventor
Maximilian Scherff
Peter Fuss Kailuweit
Jörn Suthues
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WAVELABS SOLAR METROLOGY SYSTEMS GmbH
Original Assignee
WAVELABS SOLAR METROLOGY SYSTEMS GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to EP22822379.8A priority Critical patent/EP4437650A1/fr
Publication of WO2023094555A1 publication Critical patent/WO2023094555A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification

Definitions

  • the invention relates to a solar module test device and a solar module test method for testing at least a first solar module and a second solar module.
  • the decision to build a solar system is largely based on economic considerations, which take into account the costs and the expected solar electricity yields.
  • the expected electricity yields are simulated or estimated based on empirical values.
  • One of the results obtained is the electricity generation costs over the operating period, which is an important variable for the investor.
  • the cause or the culprit must be sought.
  • the cause may be weather conditions that deviate from the simulation results or technical problems.
  • defective modules are usually found using imaging methods such as infrared measurement (IR) or electroluminescence measurement (EL).
  • IR infrared measurement
  • EL electroluminescence measurement
  • the performance of individual solar modules or all solar modules of a solar module string (series connection of several solar modules) or an entire solar system is checked. For this purpose, for example, the current module output is measured, the ambient conditions prevailing at the moment, such as temperature and radiation, are taken into account and thus converted to the standardized Standard Test Conditions (STC) so that they can then be compared with the data sheet information. It is error-prone to record the exact irradiation conditions and cell temperatures on the modules.
  • STC Standard Test Conditions
  • a current-voltage characteristic of the photovoltaic cell is recorded and stored at time intervals of, for example, days or weeks.
  • the stored characteristic curves are compared with each other in order to determine a trend and to derive possible degradation of the solar cell or solar module.
  • DE 10 2014 223 593 A1 describes a method for determining a degradation state of a solar module.
  • current-voltage characteristics of the solar module are used to determine whether a short-circuit current or an MPP current (ie a current at the maximum power point) is the most meaningful for determining degradation.
  • the short-circuit current and/or MPP current is then measured at a first point in time and at a second point in time, for example one year later, and the two measured values are compared with one another in order to determine a possible worsening of the degradation state.
  • the respective solar module is indeed measured over longer periods of time.
  • the operating status of the solar module between the measurement times is not included in the test.
  • several solar modules measured in this way cannot be compared with one another.
  • the object of the invention is to provide a solar module test device and a solar module test method in order to be able to measure solar modules already installed in solar systems in a targeted and cost-effective manner over a longer period of time and under defined parameters and to enable better comparability between two or more solar modules.
  • the object is achieved according to the invention by a solar module test device with the features of claim 1 and by a solar module test method with the features of claim 15.
  • a solar module test device for testing at least a first solar module and a second solar module.
  • the solar module test device has a test device which is designed to be connected to the first solar module and to the second solar module at the same time. This means, for example, that after measuring the first solar module to measure the second, the first solar module does not have to be separated from the test device again in order to then connect the second solar module to the test device.
  • the solar module test device has first connecting elements and second connecting elements.
  • the first connecting elements are designed to connect the test device to the first solar module.
  • the second connection elements are designed to connect the test device to the second solar module.
  • two further connection elements are preferably designed to insert the test device into the solar module string instead of the first solar module and/or the second solar module.
  • the connecting elements can in particular be electrical lines which are connected to the test device and at the free ends of which suitable connecting elements are arranged in order to connect them electrically to the respective solar module.
  • the connecting elements can also be electrical plug connectors, to which electrical lines can be connected. If the two solar modules are interconnected with other solar modules, for example within a string or strand in a series connection or in a parallel connection, then when using the test device in the field, the first solar module is disconnected from the connection and connected to the test device tied together.
  • first solar module and “second” solar module throughout the description and in the patent claims only serve to linguistically distinguish between several solar modules. Unless explicitly mentioned, this does not indicate an order within the module string, nor a neighboring arrangement or relationship.
  • the first connecting elements, the second connecting elements and/or optionally further connecting elements can comprise PV plugs.
  • the PV connectors are connectors with which a solar module is equipped in order to connect it to other solar modules in a solar module string, to a battery and/or to an inverter.
  • the PV connector is a so-called MC4 connector, which is very common in the field of photovoltaics, or a connector compatible with this MC4 connector.
  • the MC4 connector is a product of the former Forma Multi-Contact AG based in Allschwil, which has been trading as Stäubli Electrical Connectors AG since January 1st, 2017.
  • the test device of the solar module test device is designed to carry out repeated measurements on more than one solar module over a longer period of several minutes, hours, days, months or years in order to observe or monitor the solar module parameters of these solar modules.
  • the test device of the solar module test device is removed from the module string and the solar modules are connected to one another again, as before the start of the measurement.
  • the PV plugs of the solar modules are detached from the test device of the solar module test device and the solar modules and the inverter are connected to form a series connection by plugging the PV plugs together.
  • the solar modules are operated in specific, possibly different operating modes.
  • the test device of the solar module test device serves only as a switching device in order to electrically integrate the solar module into the solar module circuit.
  • the test device of the solar module test device is preferably not designed as a power optimizer or DC/DC converter for solar modules that are connected in the module string and are not currently being measured by the test device.
  • the test device does not actively regulate, control or otherwise intervene in the circuit of the solar modules in the module string and/or the inverter.
  • test device can certainly be designed to operate a solar module to be measured or a plurality of solar modules to be measured, which may be connected together to form a test module string, at one operating point or one operating point each.
  • test device can remove the first solar module or other solar modules connected to the test device via their own connecting elements in a targeted and automated manner for a measurement and to put them back into the current path after the measurement Insert current path of the module string, or carry out measurements on the first solar module while the first solar module is integrated in the current path of the entire module string.
  • Each pair of connecting elements is preferably supplemented by further measuring connecting elements in order to implement Kelvin contacting for a four-wire measurement.
  • the first solar module is connected to the test device via two connecting elements, in particular two connecting lines, and via two measuring connecting elements, in particular two measuring lines. While a defined current is conducted through the solar module via the two connecting elements, a voltage drop across the solar module is measured via the two measuring connecting elements. This has the advantage that the measured voltage is not falsified by the resistances of the connection elements.
  • the invention is based on the idea of measuring the two solar modules once at a given point in time and again at a later point in time, and operating the solar modules in defined operating modes between the two measuring points in time.
  • This has the advantage that a degradation behavior of the solar module can be determined depending on the operating conditions and/or the operating mode.
  • the operating conditions can include module conditions, which are expressed by measured module variables, and/or environmental conditions, which are expressed by measured environmental variables.
  • a measurement is carried out on the first solar module at a first starting time in order to obtain a measurement result (hereinafter referred to as the first initial measurement result) and at a later first end time a further measurement is carried out in order to obtain a further measurement result (hereinafter referred to as the first final measurement result).
  • the first solar module is operated in a first operating mode over a first period of time between the first start time and the first end time.
  • the first time period can be a predominant time period or the entire time period between the first start time and the first end time.
  • the test device is designed to carry out a measurement on the second solar module at a second starting time in order to obtain a measurement result (hereinafter referred to as the second initial measurement result) and to carry out a measurement at a later second end time in order to obtain a further measurement result (hereinafter referred to as the second end measurement result). to obtain.
  • the second solar module is to be operated in a second operating mode over a second period of time between the second start time and the second end time.
  • the second time period can be a predominant time period or the entire time period between the second start time and the second end time.
  • the first operating mode is the same as the second operating mode.
  • the first period of time and the second period of time preferably overlap.
  • the first start time is essentially the same as the second start time and/or the first end time is essentially the same as the second end time. This means that the two solar modules are essentially measured simultaneously and operated in the respective operating mode.
  • the test device can be connected to the first solar module and to the second solar module at the same time means in particular that the test device can control the current and/or the voltage of the first solar module independently of the current and the voltage of the second solar module.
  • the current through the first solar module can be different from the current through the second solar module.
  • the control for measuring the two solar modules can be done using multiplexing.
  • One advantage of the topography with a multiplexer is that one and the same measurement electronics are used for all connected solar modules, which means that the relative measurement error is comparatively small.
  • the solar module test device preferably has a multiplexer device, which is designed to electrically connect the test device selectively to the first connecting elements and to the second connecting elements.
  • a separate unit can be provided for each solar module to be measured, which keeps the solar module in its corresponding operating mode. So a first unit for holding the first solar module in the first operating mode and a second unit for holding the second solar module in the second operating mode. Measuring electronics can then also be accommodated specifically for the respective solar module in such a unit.
  • the test device can be equipped with several such measuring units and configured to measure several solar modules at the same time.
  • the test device can have further connecting elements for connecting further solar modules, i.e. corresponding third connecting elements for connecting a third solar module, fourth connecting elements for connecting a fourth solar module, etc. If more than two solar modules are connected to the test device at the same time, then between the measuring times a first group of Solar modules are kept in the first operating mode and a second group of solar modules in the second operating mode. Alternatively, each solar module can be operated in an associated additional operating mode.
  • two or more solar modules can also be connected to the first connecting element, which are connected to one another in a series connection or parallel connection. This can also apply to the second and/or each additional connecting element. In this way, the solar module test device can test a module string made up of these solar modules.
  • the test device is designed to be connected to more than two solar modules at the same time.
  • a Test device have more than two connecting elements, namely a third connecting element, a fourth connecting element, etc. Accordingly, it would be designed to determine or record third, fourth, etc. start and end measurement results at corresponding points in time.
  • the first operating mode preferably includes operating the first solar module at an operating point on a current-voltage characteristic of the first solar module, operating the first solar module in an operating circuit and/or charging a battery of the test device using the first solar module.
  • the second operating mode preferably includes operating the second solar module at an operating point on a current-voltage characteristic of the second solar module, operating the second solar module in an operating circuit and/or charging a battery of the test device using the second solar module. In particular, this means that the two solar modules are operated in different operating modes within the respective time periods.
  • Operating the respective solar modules in an operating circuit means that the solar module disconnected from the solar module string of the solar system and connected to the test device is operated as if it were still arranged in the solar system in the original configuration.
  • the electrical connection from the solar module is carried out by the test device to the other solar modules in the solar system.
  • This requires additional lines that connect the test device back to the open ends of the solar module string of the solar system.
  • the solar module to be tested is operated under the same conditions as without the measurement setup.
  • the test device only separates the solar module from the solar module circuit when a measurement is being carried out and puts it back into the operating circuit after the measurement.
  • this solar module is usually not available to the module string.
  • this solar module is removed from the current path of the module string.
  • the current path of the module string is then interrupted during the measurement in the simple case.
  • the solar module can be bypassed for the duration of the measurement. This has the advantage that the module string can continue to supply electricity while the solar module is being measured.
  • the energy generated by the solar module is preferably dissipated in the circuits of the test device, in particular converted to a large extent into heat. This happens with the first solar module in particular during the first period of time when it is being operated in the first operating mode, and/or with the second solar module in particular during the second period of time when it is being operated in the second operating mode.
  • the operating point can be, in particular, operation with short-circuit current or open-circuit voltage, or any predetermined operating point on the current-voltage characteristic.
  • the optimum operating point ie the point of maximum module power (Maximum Power Point, MPP) can be selected as the operating point.
  • MPP Maximum Power Point
  • the electrical measured values of the operating points depend on the operating conditions and can vary over the measurement period.
  • the first operating mode differs from the second operating mode.
  • solar modules that are operated under different operating conditions can be examined over a longer period of time.
  • the solar modules can each be operated with different local module voltages to ground potential. This module voltage is relevant for the so-called PID effect (Potential Induced Degradation).
  • the first operating mode and the second operating mode are the same.
  • all solar modules or all solar modules of a subgroup on solar modules are operated in a certain operating mode between the measurements.
  • the operating point of a solar module can change over time due to temperature changes, changes in irradiation and the like. In particular, these influencing factors can lead to a drift in the short-circuit current, the no-load voltage or the MPP operating point.
  • a tracking device is preferably provided, which is set up to keep the first solar module at a predetermined first operating point on the current-voltage characteristic curve of the first solar module during the first period of time and/or to keep the second solar module during the second period of time in to keep a predetermined second working point on the current-voltage characteristic of the second solar module.
  • the first and/or the second working point can thus in each case be an MPP working point of the respective solar module.
  • the test device can be designed in such a way that the first and/or the second working point includes any working point outside of short circuit, open circuit or MPP.
  • any working point can be set for the first solar module. This preferably also applies to the second solar module and, if necessary, to every further connected solar module.
  • the first initial measurement result, the first final measurement result, the second initial measurement result and/or the second final measurement result include at least one current value, one voltage value and/or one current-voltage characteristic.
  • one, several or all of these four results can be a short circuit current Isc (short circuit current), an open circuit voltage Uoc (open circuit voltage) and/or current and/or voltage values which indicate a point of maximum power Pmpp (maximum mark power point).
  • Isc short circuit current
  • Uoc open circuit voltage
  • Pmpp maximum mark power point
  • the respective measurement times can be freely selected and typically have a constant time span between the measurement times. However, the period of time can also vary over the entire measurement period.
  • the test device is preferably designed to receive an external trigger signal and to determine or determine the first start time, the first end time, the second start time and/or the second end time depending on the received external trigger signal. In this way, one or all of the measurements can be triggered externally.
  • the external trigger signal can depend in particular on conditions in the vicinity of the solar system, for example on the time of day, on atmospheric conditions such as wind conditions, for example the occurrence of gusts of wind, on an ambient temperature, on humidity, on air pressure, on shading conditions and the like.
  • the test device is preferably designed to record one or more further measured module variable(s) and/or environmental measured variable(s). Such measured variables can be recorded and stored selectively or regularly over the course of time. This makes it possible to compare the measured variables recorded with the measurement results in real time or at a later point in time in order to determine possible correlations.
  • the solar module test device can have corresponding sensors which are connected to the test device.
  • Measured module variables can in particular include the total current of a module string or the power of a module string.
  • Ambient measured variables can in particular include an air temperature, a module temperature, an air pressure, an air humidity and the like.
  • the test device can be designed to emit a trigger signal and thus to determine the measurement time of further measured module variable(s) and/or measured environmental variable(s).
  • the corresponding sensor or the corresponding sensors are not part of the test device, but are activated and/or read out by the trigger signal.
  • the test device should be configured to receive and store the results of such triggered measurements.
  • the test device can be configured in such a way that it transmits the trigger signal as a function of a detected or received measured module variable and/or measured environmental variable.
  • the detected or received measured module variable and/or environmental measured variable is first analyzed and a trigger signal for a further measurement is generated based on the analysis result.
  • the analysis of the data can include filter functions, statistics or the use of artificial intelligence (AI).
  • AI artificial intelligence
  • the test device can perform or trigger a measurement of the module temperature. The result of the measurement is then analyzed. If the measured module temperature exceeds a specified threshold value, then another measurement is carried out or triggered, for example the measurement of an ambient temperature or the creation of a thermographic image.
  • the test device is preferably designed to be coupled to a further test device of the same type via a communication connection.
  • the test device can be designed to trigger a measurement by the further test device and/or to carry out a measurement in response to a trigger signal which it receives from the further test device.
  • the further test device can be designed in accordance with the test device according to one of the embodiments described herein.
  • the measured module variable(s) to be recorded can be, for example, a module temperature, an insulation resistance and/or a deflection of the solar module.
  • the environmental variable(s) can, for example Include values that characterize an ambient temperature, light irradiation, a light spectrum, wind speed, wind direction, precipitation (in particular rain, snow, etc.).
  • the solar module test device preferably has a data logger, which is connected to the test device and is designed to record the first initial measurement result, the first final measurement result, the second initial measurement result, the second final measurement result, the measured module variable(s), the first operating mode, the second operating mode, the first To store the start time, the first end time, the second start time, the second end time and/or the environmental measured variable(s) for a long time and/or to send it to an external recipient via a communication device.
  • a data logger which is connected to the test device and is designed to record the first initial measurement result, the first final measurement result, the second initial measurement result, the second final measurement result, the measured module variable(s), the first operating mode, the second operating mode, the first To store the start time, the first end time, the second start time, the second end time and/or the environmental measured variable(s) for a long time and/or to send it to an external recipient via a communication device.
  • the test device preferably supports a notification function, so that certain events or measurement results trigger an alarm.
  • the solar module test device preferably has a signaling device which is connected to the test device and is designed to trigger an alarm and/or a notification if one or more of the measurement results and/or measurement variables exceeds or falls below a threshold value, or if a result profile is present generate.
  • the previously collected measurement results can be filtered, for example, or statistics can be applied. These can also be generated with the help of the Kl.
  • the notification can take place, for example, by means of a short message, for example by means of SMS.
  • the signaling device expediently has a radio module, in particular a GSM module.
  • the solar module test device preferably has a mobile housing in which the test device, the first connecting elements and the second connecting elements are accommodated.
  • a battery is also preferably housed in the housing, which independently powers the tester. As described above, an operating mode of one or several of the solar panels are to charge the battery.
  • the housing is preferably a portable housing, in particular a suitcase.
  • the solar module test device has a communication module for data exchange, preferably for wireless data exchange, in particular a radio module.
  • a radio module has already been proposed previously in connection with a signaling device.
  • the communication module can also be provided independently of such a signaling device and can be used, for example, to support the programming and/or control of the solar module test device and the test device.
  • the operating modes that is to say in particular the first and the second operating mode, can be programmed before the start of the test method and/or programmed and/or changed during the test method via a wireless connection. In this way, it is possible to adapt the test procedure to intermediate results that have already been determined.
  • the amount of data can be reduced before storage and/or data exchange, e.g. with the help of statistical considerations or filter functions.
  • a solar module test method is provided.
  • the embodiments and advantages listed above and below in connection with the solar module test device also apply correspondingly to the solar module test method.
  • the test device is preferably connected to solar modules that are already used in a PV system, in order in particular to carry out measurements temporarily.
  • the first solar module is electrically separated from its/n neighboring solar module(s) and/or from an inverter in a solar module string.
  • the second solar module is electrically separated from an adjacent solar module and/or from an inverter in the solar module string.
  • FIG. 1B shows a series connection of several solar modules in a module string, which are connected to an inverter
  • FIG. 2 shows a schematic diagram of a solar module test device according to a preferred embodiment, to which the solar modules of FIG. 1A are connected;
  • FIG. 3 shows a schematic diagram of a solar module test device according to a preferred embodiment, to which solar modules from FIG. 1B are connected;
  • FIG. 4 shows a schematic diagram of a solar module test device connected to a module string according to a further preferred embodiment
  • FIG. 5 shows a schematic diagram of the solar module test device according to FIG. 3 in an alternative configuration
  • FIG. 6 shows a schematic diagram of a solar module test device connected to a module string according to an embodiment with a multiplexer device
  • FIG. 7 shows a schematic diagram of a solar module test device connected to a module string in a self-sufficient embodiment with a battery.
  • FIGS. 1A and 1B Two possible areas of application of a solar module test device and a solar module test method according to the invention are shown schematically in FIGS. 1A and 1B.
  • 1A shows a first solar module 11, a second solar module 12 and two further solar modules 13. which can be connected individually, in pairs or together to a test device.
  • FIG. 1B shows a module string made up of several solar modules 11, 12, 13 which are connected to one another in series.
  • the module string is connected to an inverter 5, which converts the direct voltage generated by the solar modules into an alternating voltage so that it can be fed into a local, regional and/or national power grid.
  • the inverter 5 usually also takes on other far-reaching functions that will not be discussed further here.
  • a solar module test device is shown schematically in FIG. 2 , which is connected to the four solar modules 11 , 12 , 13 shown in FIG. 1A .
  • the solar module test device has first connecting elements 1, second connecting elements 2 and several further connecting elements 4, with only two pairs of the further connecting elements 4 being used for the connection of the two further solar modules 13 and several of the further connecting elements 4 being unused.
  • the connecting elements 1 , 2 , 4 are arranged on a housing 7 .
  • the housing 7 is in particular a transportable measuring case.
  • FIGS. 2 to 7 illustrate, in particular, different operating modes of one and the same solar module test device.
  • This solar module test device can be designed in such a way that one or any number of the operating modes described here can be implemented.
  • Diagram images are used in FIG. 2 which represent current or voltage sources P, variable loads R, current measuring elements I and voltage measuring elements V. It is thus schematically illustrated that any desired operating point of the first solar module 11 can be set at the first connecting elements 1 by means of the current or voltage source P and the variable load R. In reality, these circuit elements are usually implemented with circuits including integrated circuits and form a test device 6.
  • each connecting element 1, 2, 4 is a assigned its own test module 61, which actively keeps the solar module 11, 12, 13 connected to the connecting element 1, 2, 4 in a desired operating point and can measure current and voltage.
  • the connecting elements 4 not used in FIG. 2 are also connected to such test modules, but this is not shown in FIG. 2 for the sake of clarity.
  • the test device 6 also provides each of the solar modules 12, 13 via the second connecting elements 2 and the further connecting elements 4 with its own test module 61 consisting of a current or voltage source P and a load R, which actively activates the respective solar module 12, 13 in its intended operating mode hold.
  • these individual solar modules according to FIGS. 1A and 2 can also be connected to a test device 6 according to one of the configurations described below.
  • the test device 6 shown in FIG. 2 can therefore contain fewer test modules 61 than the number of solar modules connected. These test modules 61 will then work by means of multiplexing, so that two or more solar modules then share a test module 61 .
  • FIG. 3 shows a solar module test device which is connected to a module string according to FIG. 1B.
  • the connections between a first solar module 11 and a second solar module 12 and the remaining solar modules 13 are separated and these two solar modules 11 , 12 are electrically connected to the respective test modules 61 of the test device 6 via first connecting elements 1 and second connecting elements 2 .
  • the now free connections of the module string are also connected to the solar module test device, namely via third connecting elements 3.
  • a switching unit 63 is also provided, with which the interconnection between the connecting elements 1, 2, 3 and the test device 6 can be controlled. In the configuration and switching position of the switching unit 63 shown in FIG. 3 , the first solar module 11 and the second switching module 12 are each connected to their own test module 61 .
  • a bypass connection 67 can be provided, which contacts the connections of the module string that are opened via the third connection elements 3 with one another. This ensures that the other solar modules 13 that are not tested continue to form a module string that supplies the inverter 5 with power.
  • the bypass connection 67 thus bridges the two solar modules 11, 12, which are measured.
  • the bypass connection 67 can be used to bypass only one solar module, namely the one that is being measured at a specific point in time.
  • this first solar module 11 is bridged, so that the remaining solar modules 12, 13 together form a module string. If the second solar module 12 is then measured at a different time segment, this second solar module 12 is bridged, so that the remaining solar modules 11, 13 together form a module string.
  • FIG. 5 shows the embodiment of the solar module test device shown in FIG. 3, in which, however, the switching unit 63 is switched to a second switching position.
  • the connecting elements 1 , 2 , 3 are connected to one another via the switching unit 63 in such a way that the first and second solar modules 11 , 12 are again connected in series together with the other solar modules 13 .
  • the two solar modules 11 , 12 are kept in a regular operating mode in which they generate electricity together with the other solar modules 13 for the inverter 5 as part of the module string.
  • the regular operating mode can be an operating point of maximum module power of the respective solar module 11, 12.
  • none of the test modules 61 of test device 6 is connected to one of the solar modules 11 , 12 , 13 .
  • switch and switch position combinations compared to the embodiments described above in particular in connection with FIGS. 4 and 5 are conceivable.
  • this solar module is bypassed, e.g. with a further bypass connection, so that the module string can continue to be operated during the measurement of this solar module, whether with or without the second solar module 12.
  • Fig. 2 1 to 7 different operating modes of the solar module test device were described and illustrated here, which can be implemented individually or in combination in the solar module test device.
  • Other operating modes can include switch positions that enable charging of rechargeable batteries or batteries of the solar module test device, which enable a solar module to be short-circuited in order to achieve a "short circuit" working point Jsc, which allow the connecting elements of a solar module to be exposed in order to establish an open-circuit or to realize "open circuit” operating point Voc, and/or the like.
  • FIG. 6 An embodiment of the solar module test device with a multiplexer device 65 is shown schematically in FIG.
  • the test device 6 has only one test module 61 which can be optionally connected to the first solar module 11 and the second solar module 12 by means of the multiplexer device 65 .
  • neither of the two solar modules 11, 12 is connected to the test device 6.
  • the multiplexer device 65 is shown and described here as an alternative to an embodiment in which each solar module 11, 12 is assigned its own test device 61, it is possible that the solar module test device is designed in such a way that it has both a multiplexer-supported operating mode as well as an operating mode in which each solar module 11 , 12 is assigned its own test device 61 .
  • FIG. 7 An embodiment of the solar module test device is shown schematically in FIG. 7, in which the test device 6 has a battery 69 by which it can be fed independently.
  • the electrical connection of the battery 69 with the test device 6 is not shown in FIG.
  • FIG. 7 only the first solar module 11 is connected to the test device 6 and is tested accordingly, while the current generated by the second solar module 12 is used to charge the battery 69 .
  • FIG. 7 an embodiment including the optional bypass link 67 and battery 69 is shown in FIG. 7 .
  • the battery 69 is combined with the multiplexer device 65.
  • the solar module test device is then preferably configured and controlled in such a way that in a first test phase the test device 6 is connected to the first solar module 11 for the purpose of testing, while the second solar module 12 feeds the battery 69, and in a second test phase the test device 6 is connected to it for the purpose of testing 6 is connected to the second solar module 12, while the first solar module 11 feeds the battery 69.
  • Some or all of the exemplary embodiments illustrated in the figures can be individual operating modes of a solar module test device, with the different connection configurations being implemented by appropriately controlled circuits.
  • individual exemplary embodiments can be implemented with all the other exemplary embodiments described here, for example the multiplexer device 65 and the battery 69.

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Abstract

L'invention concerne un dispositif de test de module solaire et un procédé de test de module solaire pour tester au moins un premier module solaire et un second module solaire. Le dispositif de test de module solaire comprend un appareil de test (6) et des premier et second éléments de connexion (1, 2) qui sont conçus pour fixer l'appareil de test (6) au premier et au second module solaire (11, 12). L'appareil de test est également logé dans un boîtier mobile. L'appareil de test (6) est conçu pour : - être connecté au premier module solaire (11) et au second module solaire (12) simultanément ; - effectuer une mesure sur le premier module solaire (11) à une première heure de début afin d'obtenir un premier résultat de mesure de début et effectuer une mesure à une première heure de fin ultérieure afin d'obtenir un premier résultat de mesure de fin ; - faire fonctionner le premier module solaire (11) pendant une première période de temps entre la première heure de début et la première heure de fin dans un premier mode de fonctionnement ; - effectuer une mesure sur le second module solaire (12) à une seconde heure de début afin d'obtenir un second résultat de mesure de début et effectuer une mesure à une seconde heure de fin ultérieure afin d'obtenir un second résultat de mesure de fin ; et - faire fonctionner le second module solaire (12) pendant une seconde période de temps entre la seconde heure de début et la seconde heure de fin dans un second mode de fonctionnement.
PCT/EP2022/083196 2021-11-24 2022-11-24 Dispositif de test de module solaire et procédé de test de module solaire Ceased WO2023094555A1 (fr)

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DE102021130817.8A DE102021130817A1 (de) 2021-11-24 2021-11-24 Energieautarke PV-Kennlinienmesssung

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110241720A1 (en) * 2009-10-08 2011-10-06 Adensis Gmbh Dc test point for locating defective pv modules in a pv system
DE102014223593A1 (de) 2014-11-19 2016-05-19 Robert Bosch Gmbh Verfahren und Vorrichtung zum Ermitteln eines Degradationszustandes eines Fotovoltaikmoduls
US20160276976A1 (en) 2012-11-20 2016-09-22 University Of Central Florida Research Foundation, Inc. Method, system and program product for photovoltaic cell monitoring via current-voltage measurements
CN111030593A (zh) * 2019-12-06 2020-04-17 浙江浙能技术研究院有限公司 一种微型太阳能电池户外测试装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4342389A1 (de) 1993-12-11 1995-06-14 Inst Luft Und Kaeltetechnik Gm Schaltungsanordnung und Verfahren zur Ermittlung der Kennlinien von Solarmodulen
PL232507B1 (pl) 2017-05-27 2019-06-28 Igrid Tech Spolka Z Ograniczona Odpowiedzialnoscia Sposób i system monitorowania i optymalizacji pracy zestawu paneli fotowoltaicznych
US11764679B2 (en) 2020-01-15 2023-09-19 Solaredge Technologies Ltd. Power device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110241720A1 (en) * 2009-10-08 2011-10-06 Adensis Gmbh Dc test point for locating defective pv modules in a pv system
US20160276976A1 (en) 2012-11-20 2016-09-22 University Of Central Florida Research Foundation, Inc. Method, system and program product for photovoltaic cell monitoring via current-voltage measurements
DE102014223593A1 (de) 2014-11-19 2016-05-19 Robert Bosch Gmbh Verfahren und Vorrichtung zum Ermitteln eines Degradationszustandes eines Fotovoltaikmoduls
CN111030593A (zh) * 2019-12-06 2020-04-17 浙江浙能技术研究院有限公司 一种微型太阳能电池户外测试装置

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