JP2003069057A - Solar simulator for solar cell measurement - Google Patents

Abstract

(57) [Summary] [Problem] To provide a solar simulator capable of simultaneously measuring a plurality of modules both formally and substantially. SOLUTION: An arrangement part 2 of _two or more solar cell modules M ₁ and M _{2 on} an effective irradiation surface of one pseudo solar light emitting part 1.
And each module M ₁ ,
A load control unit 3 and 4 for controlling each module M _1, M ₂ of the current or voltage to the M _2, a measuring unit 5, 6 for measuring the current or voltage or both occur each module M _1, M ₂ And a general control unit for controlling the current and voltage of the light-emitting unit 1 and each of the load control units 3 and 4. The measurement data of each of the measurement units 5 and 6 is transmitted to the measurement units 5 and 6. Data processing units 8, 9 for processing and displaying and storing at least the processed data are connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar simulator formed so that a plurality of panels such as solar cell modules can be simultaneously measured.

[0002]

2. Description of the Related Art Conventionally, a manufactured solar cell module (sometimes referred to as a panel) is measured before shipment by using an artificial light source device (solar simulator) to determine whether or not its performance has reached a standard. is doing. This measurement is based on the principle that one module (or panel) is measured by one measurement. For example, in a module with a small light receiving area, multiple modules are effectively irradiated with artificial light sources (pseudo sunlight). Since it can be arranged on the surface, it is possible to measure a plurality of modules at once.

However, even though a plurality of conventional modules are measured at one time, a plurality of modules are arranged on the effective irradiation surface of the artificial light source, and a lead wire for extracting measurement data is connected to each module. However, in measuring, one module is measured, and then the lead wire is switched to that of the next module by the multiplexer to measure the next module. Modules are not meant to be measured at the same time.

The above-mentioned measurement mode is more rational than the measurement mode in which the modules are replaced one by one in that a plurality of modules are arranged at their measurement sites in advance, but in actuality, In the measurement, since a plurality of modules are measured one by one, the time required for the measurement is equal to the time required for sequentially measuring the plurality of modules, which is not rational.

[0005]

SUMMARY OF THE INVENTION In view of the present situation of measuring a plurality of solar cell modules as described above, the present invention provides a solar simulator capable of measuring a plurality of modules formally and substantially simultaneously. The task is to do so.

[0006]

The simulator of the present invention, which has been made for the purpose of solving the above-mentioned problems, has a structure in which two or more solar cell modules are arranged on the effective irradiation surface of one pseudo-sunlight emitting section. So that a load control unit that controls the current or voltage of each module with respect to each module placed in each arrangement unit and a measurement unit that measures the current or voltage or both generated in each module can be connected. Data to be formed and connected to the light emitting unit and the overall control unit for controlling the current and voltage to each load control unit, and to each measurement unit, processing data measured therein and displaying and storing at least the processed data. It is characterized in that a processing unit is connected.

According to the present invention, in the above structure, parameters for correcting the difference in light intensity (light amount difference) depending on the location of the module can be set in the overall control unit and the data processing unit.

When the above parameters are for correcting the intensity of light from the light emitting section depending on the characteristics of the light emitting section and the positions of the plurality of modules in the arrangement section, each module has It is of a nature that depends on the location where it is placed.

Therefore, in the present invention, the data for specifying the arrangement position of each module is detected by each position sensor placed in the arrangement portion of each module, and is set in the overall control unit and the data processing unit by this detection data. A specific parameter may be automatically selected from among a plurality of stored parameters.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an example of the configuration of the solar simulator of the present invention, FIG. 2 is a block diagram showing a second configuration example, FIG. 3 is a block diagram showing a third configuration example, and FIG. 4 is a fourth configuration example. It is a block diagram showing.

In FIG. 1, reference numeral 1 denotes one light emitting portion having an irradiation surface capable of effectively irradiating two or more modules with pseudo sunlight. For example, a plurality of xenon lamps and their power supplies (high voltage power supply circuit). ), A lighting trigger circuit, an optical feedback control unit, and the like.

Reference numeral 2 denotes a module arranging portion formed so as to face the irradiation surface of the light emitting portion 1. Here, for convenience of description, two module modules M ₁ and M ₂ are arranged so that _two solar cell modules M ₁ and M ₂ can be arranged. Be present. Needless to say, the plural-module arranging portion in the present invention can be formed so that two or more modules can be arranged.

In the arrangement section 2, each module M ₁ ,
M ₂ has a dedicated load control unit 3 and 4 and a measurement unit 5 respectively.
6 and 6 are connected. Each of the load control units 3 and 4 is for controlling a load for varying a current or a voltage generated by each of the modules M ₁ and M ₂ when receiving the pseudo sunlight of the light emitting unit 1. The measuring units 5 and 6 measure the voltage or current generated in the modules M1 and M2, or both.

Reference numeral 7 denotes the light emitting unit 1 and the load control units 3 and 4 described above.
Is an overall control unit for controlling the amount of light emission and the voltage and current to be a load, and the individual parameters corresponding to the difference in the positions of the modules M ₁ and M _{2 in} the arrangement unit 2, here, the parameters P ₁ and P It is formed so that ₂ can be set and changed.

Reference numeral 8 is a data processing unit connected to the measuring unit 5 of the module M ₁ , and 9 is a data processing unit connected to the measuring unit 6 of the module M _2. The respective data processing units 8 and 9 are
It has a function of processing the data measured by the measuring units 5 and 6 connected to each, displaying the processed measurement data, and storing it. The data processing units 8 and 9 are also formed so that the parameters P ₁ and P ₂ corresponding to the modules M ₁ and M ₂ can be set, and the parameters P ₁ and P ₂ are obtained by the measuring units 5 and 6. Used for processing data. As described above, an example of the solar simulator of the present invention that can simultaneously measure at least two modules by one measurement operation is configured. However, the solar simulator of the present invention can also be configured as illustrated in FIGS. 2 to 4. , Will be sequentially described below.

FIG. 2 is a block diagram for handling the parameters P ₁ and P ₂ which are set in the overall control unit 7 and the data processing units 8 and 9 in the configuration example of FIG. 1 collectively. , The data processing units 8 and 9 of FIG. 1 are formed into a single data processing unit 81 that integrates these, and each module
The parameters P ₁ and P ₂ corresponding to the arrangement positions of M ₁ and M ₂ can be simultaneously set in the overall control unit 7 and the data processing unit 81. With this configuration, the module M _1, the parameter P ₁ corresponds to the position of M _2, setting P _2, can be performed simultaneously for the entire control unit 7 and the data processing unit 81, the parameter P _1, P There is an advantage that the setting of ₂ and the changing operation can be done only once. Although the display of the light emitting unit 1 is omitted in FIG. 2, since the light emitting unit 1 is an essential element for the solar simulator, the light emitting unit 1 is also included in the configuration example of FIG. The same reference numerals as those in FIG. 1 indicate the same components.

Configuration example of FIG. 3, the load control unit 31, while the one having the configuration shared for controlling only the load current for each module M _1, M _2, the module M _1, M ₂ While the flowing current is formed to be measured in series by the current measuring unit 5a, the voltage of each module M ₁ and M ₂ is measured by the individual voltage measuring units 51 and 61. The configuration example of FIG. 3 also includes the light emitting unit 1, but the illustration is omitted. The same reference numerals as those in FIGS. 1 and 2 indicate the same components. In the configuration of FIG. 3, the currents of both modules M ₁ and M ₂ are controlled singly, so that the controlled currents are the modules M ₁ and M _2.
Flow in series as the same current. In this case, the current measuring unit 5a may be omitted.

In the configuration example of FIG. 4, in the solar simulator of the present invention illustrated in FIG. 3, the position in the module arranging portion 2 where the modules M ₁ and M ₂ are placed is determined by a position sensor.
Configured to detect at S _1, S _2, based on the output data of the position sensors S _1, S _2, corresponding to the positional parameters
In the configuration, P ₁ and P ₂ are automatically recognized and selected by the overall control unit 7 and the data processing unit 81. Although the illustration of the light emitting unit 1 is omitted in the configuration example of FIG.
It is still essential to the solar simulator of the present invention. Further, in FIG. 4, the same reference numerals as those in FIGS. 1 to 3 indicate the same components.

[0019]

As described above, the present invention forms one light emitting portion that radiates pseudo sunlight and a module arrangement portion on which at least two solar cell modules can be arranged. By connecting the load control unit and the measurement unit to each module placed in the placement unit,
Since it is possible to measure at least two modules with one measurement operation, compared to the conventional case where one solar simulator is used for each module, the cost of the light-emitting unit is much higher. If it has one, it can be shared by two or more modules at the same time, the equipment cost of the solar simulator can be reduced, and at least two modules can be measured at the same time. A special effect is obtained in that the measurement time can be shortened and rationalized.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an example of a solar simulator of the present invention.

FIG. 2 is a block diagram showing a second configuration example of the solar simulator of the present invention.

FIG. 3 is a block diagram showing a third configuration example of the solar simulator of the present invention.

FIG. 4 is a block diagram showing a fourth configuration example of the solar simulator of the present invention.

[Explanation of symbols]

1 Light emitting unit 2 Module arranging unit 3, 4 Load control unit 5, 6 Measuring unit 7 Overall control unit 8 Data processing unit 9 connected to measuring unit 5 Data processing unit M ₁ , M ₂ module connected to measuring unit 6 P ₁ , P ₂ parameters S ₁ , S ₂ position sensor

Claims (3)

[Claims] 1. An arrangement portion of two or more solar cell modules is formed on an effective irradiation surface of one pseudo sunlight emitting portion,
A load control unit that controls the current or voltage of each module with respect to each module placed in each placement unit, and a measurement unit that measures the current or voltage generated in each module, or both, are formed so that they can be connected, An overall control unit that controls the current and voltage is connected to the light emitting unit and each load control unit, and a data processing unit that processes measurement data there and at least displays and stores the processed data is connected to each measurement unit. A solar simulator for solar cell measurement characterized by the above. 2. The solar cell measuring solar cell according to claim 1, wherein a parameter for correcting a difference in light intensity (difference in light quantity) depending on a location where the modules are arranged is formed in the overall control section and the data processing section. Simulator. 3. Data for specifying the placement position of each module is detected by each position sensor placed in the placement unit of each module, and is set in the overall control unit and the data processing unit by this detection data. The solar simulator for solar cell measurement according to claim 1 or 2, which is formed to automatically select a specific parameter from a plurality of parameters.