CN111478667A - Solar simulator for testing space multi-junction solar cell - Google Patents
Solar simulator for testing space multi-junction solar cell Download PDFInfo
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- CN111478667A CN111478667A CN202010355352.4A CN202010355352A CN111478667A CN 111478667 A CN111478667 A CN 111478667A CN 202010355352 A CN202010355352 A CN 202010355352A CN 111478667 A CN111478667 A CN 111478667A
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- 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
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
- H02S50/15—Testing of PV devices, e.g. of PV modules or single PV cells using optical means, e.g. using electroluminescence
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention discloses a solar simulator for testing a space multi-junction solar cell, which belongs to the technical field of space solar cell testing and is characterized by at least comprising the following components in parts by weight: light source: the light source comprises a short arc xenon lamp; the condenser is used for converging the light rays emitted by the short-arc xenon lamp to a target light path; be located the target light path, and set gradually along light transmission direction: the device comprises a light modulation component, an optical integrator and a collimating objective lens; the light modulation component comprises a filter array and an adjustable diaphragm. According to the invention, by expanding the number of the optical filters and adding the diaphragm in front of each optical filter, the spectrum adjusting capability of the solar simulator is stronger, more sections of spectrums can be adjusted, and the test of a four-junction to six-junction solar cell is satisfied. The invention adjusts the position of the optical filter for adjusting the spectrum, and adds the optical filter for adjusting the spectrum at the outlet of the condenser lens, thereby better realizing the target of spectrum adjustment.
Description
Technical Field
The invention belongs to the technical field of space solar cell testing, and particularly relates to a solar simulator for space multi-junction solar cell testing.
Background
The twenty-first century is an information age and a space age, and the important manifestation of comprehensive national strength is whether the twenty-first century can occupy a place in the world space science and technology field. Aerospace is a strategic high-technology industry in China, and the development of aerospace has important significance for realizing national strategic targets. The energy required for satellite operation comes substantially from solar energy. As the core of a primary power supply system of a satellite, the solar cell continuously converts the energy of solar radiation into electric energy, and provides continuous energy for the normal operation of various aerospace craft. The accurate test of the electrical performance parameters of the solar cell, especially the photoelectric conversion efficiency, is very important for the design, development and production of the space solar cell.
For a space solar cell, the standard test condition is AM0 spectrum, such standard sunlight is not available on the ground, and an artificial light source is usually used to simulate sunlight, i.e. a solar simulator, to perform the electrical performance test of the solar cell. The solar radiation control device overcomes the defects that the solar radiation is influenced by time and climate and the total irradiance can not be adjusted, and is widely applied to the fields of aerospace, photovoltaic, agriculture and the like.
The irradiation unevenness is an important index for examining a solar simulator and is directly related to the test accuracy of the solar cell. For a class a solar simulator, the irradiance non-uniformity within the target test area is required to be no greater than 2%. Current solar simulators place filters behind the optical integrator, which causes problems with non-uniform light intensity in the target test area.
Meanwhile, for the test of the space multi-junction solar cell, the solar simulator is required to have the multiband spectrum adjustable control capability, and particularly, for the four-junction to six-junction gallium arsenide solar cell, more adjustable wave bands are required. The current solar simulator mainly aims at a single-junction or three-junction solar cell and cannot meet the test requirements of a four-junction to six-junction gallium arsenide solar cell.
Disclosure of Invention
The invention provides a solar simulator for testing a space multi-junction solar cell, aiming at improving the irradiation uniformity and realizing the adjustability of a spectrum waveband, aiming at solving the technical problems in the prior art.
The invention aims to provide a solar simulator for testing a space multi-junction solar cell, which at least comprises the following components:
light source: the light source comprises a short arc xenon lamp (102);
a condenser (101) for converging the light emitted by the short-arc xenon lamp to a target light path;
be located the target light path, and set gradually along light transmission direction: a light modulation assembly, an optical integrator (106) and a collimator objective (108); the light modulation assembly comprises a filter array (103) and an adjustable diaphragm (104).
Further, the short-arc xenon lamp consists of a tungsten or tungsten material cathode and a quartz bulb shell.
Furthermore, a reflecting mirror A for turning the light path is provided between the light modulation element and the optical integrator 106.
Furthermore, a reflector B for deflecting the optical path is arranged between the optical integrator 106 and the collimator objective 108.
Furthermore, the anode and the cathode of the short-arc xenon lamp are respectively sealed and connected with two ends of a quartz bulb, and xenon is injected into the bulb after the bulb is vacuumized.
Further, the filter array (103) is composed of 15-30 filters, the spectral range of the filters is 300-1800 nm, and the filters include band-pass filters, band-stop filters, long-wavelength pass filters and short-wavelength pass filters.
Furthermore, the adjustable diaphragms (104) are arranged in front of the optical filters, and each optical filter is provided with one adjustable diaphragm.
Further, the optical integrator (106) is comprised of an integrator field lens and an integrator projection lens.
The invention has the advantages and positive effects that:
(1) the invention designs a solar simulator for testing a space multi-junction solar cell. The existing solar simulator is mainly aimed at a single junction or a triple junction solar cell. Compared with the solar simulator, the solar simulator has the advantages that the spectrum adjusting capacity of the solar simulator is higher by expanding the number of the optical filters and adding the diaphragm in front of each optical filter, so that more sections of spectrums can be adjusted, and the test of the four-junction to six-junction solar battery is met.
(2) For existing solar simulators, filters are typically placed around the optical integrator. Therefore, certain influence is generated on the uniformity of light spots on the test surface, and the test result of the multi-junction solar cell is influenced. In order to reduce the influence of the spectral filter on the light intensity uniformity of the test surface, the invention adjusts the placement position of the spectral filter, and adds the spectral filter at the outlet of the condenser lens, thereby better realizing the spectral adjustment target.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
wherein: 101. a condenser lens; 102. a short arc xenon lamp; 103. an array of optical filters; 104. an adjustable diaphragm; 105. a plane mirror A; 106. an optical integrator; 107. a plane mirror B; 108. a collimating objective lens.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
as shown in fig. 1, the technical solution of the present invention is:
a solar simulator for testing a space multi-junction solar cell mainly comprises a short-arc xenon lamp 102, a condenser 101, a filter array 103, an adjustable diaphragm 104, a plane reflector A105, an optical integrator 106, a plane reflector B107 and a collimating objective 108.
Description of optical path:
(1) light emitted by the short-arc xenon lamp passes through the filter array and the adjustable diaphragm after being condensed by the condenser (the ellipsoidal mirror is selected in the preferred embodiment), horizontally passes through the optical integrator after being reflected by the plane reflector A, then is changed into downward light by the plane reflector B, and finally passes through the collimating objective lens to the test surface.
(2) The irradiance of the solar simulator is adjusted by the short-arc xenon lamp power, the filter array and the adjustable diaphragm.
(3) The spectrum wave band of the solar simulator is adjusted by the filter array, so that the multi-section adjustable spectrum is realized.
(4) The irradiation uniformity of the solar simulator is adjusted by an optical integrator.
The short-arc xenon lamp consists of a tungsten or tungsten material cathode and a quartz bulb shell. The anode and the cathode are respectively sealed at two ends of the quartz bulb shell, and xenon is filled into the bulb shell after the bulb shell is vacuumized. When DC voltage is applied between the anode and cathode of xenon lamp, under high-frequency high-voltage excitation, the cathode emits thermal electrons, and the electrons are accelerated by the electric field and then impact xenon atoms to excite and ionize the xenon atoms to generate strong arc discharge. The light-emitting principle of the short-arc xenon lamp is high-temperature plasma radiation in essence. The electron and positive ion composite luminescence is a continuous spectrum, and the spontaneous radiation of the excited xenon atoms forms an emission spectrum of the xenon atoms. These two spectra form a xenon atomic line spectrum superimposed on a continuous spectrum in the visible spectrum. The spectrum is continuous in the near ultraviolet region and has many strong lines in the near infrared region, which are the radiation generated by the excited xenon atoms in the higher energy level transitions.
The filter array consists of 15 to 30 filters, is placed at the outlet of the collecting lens, has a spectral range of 300nm to 1800nm considered when designing the filters, and comprises a band-pass filter, a band-stop filter, a long-wavelength pass filter and a short-wavelength pass filter. For a multijunction solar cell, each subcell corresponds to at least one filter, and the filter characteristic can be a band-pass characteristic or a band-stop characteristic, and the band-pass or band-stop range corresponds to the spectral response of the subcell. The rising and falling edges of the bandpass characteristic are as steep as possible.
The adjustable diaphragms are arranged in front of the optical filters, each optical filter is provided with one adjustable diaphragm, and the final spectrum is adjusted by adjusting the size of each diaphragm.
The optical integrator mainly comprises an integrator field lens and an integrator projection lens and is used for overcoming the defect of low irradiation uniformity commonly existing in a solar simulator.
The collimating objective is used for enlarging the area of a light spot and enabling a light beam to vertically irradiate a test surface.
In the preferred embodiment described above: light emitted by the short-arc xenon lamp passes through the optical filter array and the adjustable diaphragm after being condensed by the ellipsoidal mirror, horizontally passes through the optical integrator after being reflected by the plane reflector A, then is changed into downward light by the plane reflector B, and finally passes through the collimating objective to the test surface. The irradiance of the solar simulator is adjusted by the short-arc xenon lamp power, the filter array and the adjustable diaphragm. The spectrum wave band of the solar simulator is adjusted by the filter array, so that the multi-section adjustable spectrum is realized. The irradiation uniformity of the solar simulator is adjusted by an optical integrator.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (8)
1. A solar simulator for testing of spatial multijunction solar cells, comprising at least:
light source: the light source comprises a short arc xenon lamp (102);
a condenser (101) for converging the light emitted by the short-arc xenon lamp to a target light path;
be located the target light path, and set gradually along light transmission direction: a light modulation assembly, an optical integrator (106) and a collimator objective (108); the light modulation assembly comprises a filter array (103) and an adjustable diaphragm (104).
2. The solar simulator for spatial multi-junction solar cell testing according to claim 1, wherein the short arc xenon lamp is composed of a tungsten or tungsten material cathode and a quartz bulb.
3. The solar simulator for spatial multijunction solar cell testing according to claim 1 or 2, characterized in that a mirror a for light path turning is arranged between the light modulation assembly and the optical integrator (106).
4. The solar simulator for spatial multijunction solar cell testing according to claim 1 or 2, characterized in that a mirror B for optical path turning is arranged between the optical integrator (106) and the collimator objective (108).
5. The solar simulator for the spatial multi-junction solar cell test according to claim 2, wherein the anode and the cathode of the short-arc xenon lamp are respectively sealed at two ends of a quartz bulb, and xenon is flushed into the bulb after vacuum pumping.
6. The solar simulator for testing of spatial multijunction solar cells according to claim 1, wherein the filter array (103) consists of 15-30 filters, the spectral range of the filters is 300-1800 nm, and the filters include band pass filters, band stop filters, long wavelength pass filters, short wavelength pass filters.
7. The solar simulator for testing of spatial multijunction solar cells according to claim 6, characterized in that said adjustable diaphragms (104) are located in front of optical filters, one for each filter.
8. The solar simulator for spatial multijunction solar cell testing according to claim 6, characterized in that the optical integrator (106) consists of an integrator field lens and an integrator projection lens.
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| CN202010355352.4A CN111478667A (en) | 2020-04-29 | 2020-04-29 | Solar simulator for testing space multi-junction solar cell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879544A (en) * | 2020-08-25 | 2020-11-03 | 中国科学院微小卫星创新研究院 | Satellite-borne laser communication terminal thermal test tool and test method |
| CN112968664A (en) * | 2021-02-02 | 2021-06-15 | 中国电子科技集团公司第十八研究所 | Solar cell array with intelligent spectrum matching function |
| CN114165748A (en) * | 2021-11-29 | 2022-03-11 | 上海空间电源研究所 | Multi-section spectrum adjustable steady-state solar simulator |
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2020
- 2020-04-29 CN CN202010355352.4A patent/CN111478667A/en active Pending
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| RU2380663C1 (en) * | 2008-11-14 | 2010-01-27 | Учреждение Российской академии наук Физико-технический институт им. А.Ф. Иоффе РАН | Solar radiation simulator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879544A (en) * | 2020-08-25 | 2020-11-03 | 中国科学院微小卫星创新研究院 | Satellite-borne laser communication terminal thermal test tool and test method |
| CN112968664A (en) * | 2021-02-02 | 2021-06-15 | 中国电子科技集团公司第十八研究所 | Solar cell array with intelligent spectrum matching function |
| CN114165748A (en) * | 2021-11-29 | 2022-03-11 | 上海空间电源研究所 | Multi-section spectrum adjustable steady-state solar simulator |
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Application publication date: 20200731 |