416 results about "Solar simulator" patented technology

This invention provides a solar simulator measurement method capable of high-accuracy measurements with fast-response photovoltaic devices as well as with slow-response photovoltaic devices, and a solar simulator for implementing the method. A flash having a pulse wave form with a flattened peak is generated from a xenon lamp 1. The flash is sensed by an irradiance detector 3, its irradiance measured, and the irradiance of the light source is adjusted to fall within a prescribed narrow range based on the detected irradiance value. Then, the flash with irradiance within the prescribed range irradiates photovoltaic devices 4 under measurement, and the current and the voltage output by the photovoltaic devices 4 are measured at multiple points while a load of the photovoltaic devices 4 is controlled. This process is repeated with multiple flashes to obtain an I-V curve for the photovoltaic devices.

In a solar simulator for measuring the current-voltage characteristics of photovoltaic devices, it is to provide a measurement method using a solar simulator in which locative unevenness of irradiance on the test plane of the test plane side is drastically improved, not in a light source side, and a means for adjusting irradiance and the like. when an object is the photovoltaic devices Ms, and the current-voltage characteristics are measured by a solar simulator Ss equipped with a light source composed of a lamp and a reflector, and a part for setting the object to be measured, in which it is possible to dispose an irradiated test plane of the object to be measured opposite an illuminating surface of said light source, the whole test plane of said photovoltaic devices is divided imaginarily into a plurality of sections and a selected member for adjusting irradiance is disposed opposite the test plane of each imaginary sections so as to equalize or substantially to equalize the irradiance by the light source at every irradiated test plane of the sections, after which light from said light source is directed onto the test plane of the object to be measured.

This invention provides a solar simulator measurement method capable of high-accuracy measurements with fast-response photovoltaic devices as well as with slow-response photovoltaic devices, and a solar simulator for implementing the method. A flash having a pulse waveform with a flattened peak is generated from a xenon lamp 1. The flash is sensed by an irradiance detector 3, its irradiance measured, and the irradiance of the light source is adjusted to fall within a prescribed narrow range based on the detected irradiance value. Then, the flash with irradiance within the prescribed range irradiates photovoltaic devices 4 under measurement, and the current and the voltage output by the photovoltaic devices 4 are measured at multiple points while a load of the photovoltaic devices 4 is controlled. This process is repeated with multiple flashes to obtain an I-V curve for the photovoltaic devices.

The invention relates to a high-collimation solar simulator optical system with an auto-collimation aiming system, belonging to a solar simulator optical system in the technical field of optics design and aiming at solving the technical problem of providing a high-collimation solar simulator optical system with the auto-collimation aiming system. The high-collimation solar simulator optical system with the auto-collimation aiming system comprises a xenon lamp source, an ellipsoid condenser, a plane mirror, an optics integrator assembly, a first dispersion prism, a second dispersion prism, an emission reticle, an LED light source, an aiming reticle, an ocular lens and a collimator objective. On the basis of the traditional high-collimation solar simulator optical system, an auto-collimation aiming system is added on an optical path of the optical integrator assembly, wherein the auto-collimation optical system comprises a first dispersion prism, a second dispersion prism, an emission reticle, an LED light source, an aiming reticle and an ocular lens. The invention can ensure more accurate zero calibration so as to eliminate the man-made influence and achieve better experimental effect.

Embodiments of the present invention relate to a solar simulator module of a solar cell production line. In one embodiment the solar simulator receives a solar cell module in a horizontal position and reorients the module into a vertical position. A light source is oriented to emit a flash of light in a substantially horizontal orientation toward the vertically oriented solar cell module. In one embodiment, an automated labeling device affixes a label including the electrical characteristics measured onto a back surface of the solar cell module. In one embodiment, a plurality of solar cell modules are received and tested simultaneously.

This invention provides a solar simulator measurement method capable of high-accuracy measurements with fast-response photovoltaic devices as well as with slow-response photovoltaic devices, and a solar simulator for implementing the method. A flash having a pulse waveform with a flattened peak is generated from a xenon lamp. The flash is sensed by an irradiance detector, its irradiance measured, and the irradiance of the light source is adjusted to fall within a prescribed narrow range based on the detected irradiance value. Then, the flash with irradiance within the prescribed range irradiates photovoltaic devices under measurement, and the current and the voltage output by the photovoltaic devices are measured at multiple points while a load of the photovoltaic devices is controlled. This process is repeated with multiple flashes to obtain an I-V curve for the photovoltaic devices.

The invention discloses a calibration method for digital sun sensor, comprising following procedures. According to outer and inner parameters of sun sensor calibration system, unified mathematical model of sun sensor imaging is built. Two rotary shafts of rotary table are rotated to different angle so as to obtain data of calibration point and they are transmitted to processing computer by interface circuit. Processing computer sends said data of calibration point to the unified mathematical model and calibration parameters are calculated by two-step method. The invention also relates to the device applying the method. The device supplies illumination by sun simulator and data of different points can be obtained by rotating two-shaft rotary table. Processing computer is used to record data of calibration point and calculate corresponding calibration parameter. The method and the device are suitable for multiple digital sun sensors. The invention adopts unified building method of inner and outer parameters and improves calibration accuracy. At the same time because installing aligning accuracy is not required strictly the whole calibration process is simple.

The invention provides a solar simulator light source and a realizing method thereof. The solar simulator light source at least comprises a substrate, a first lighting component and a light filter, wherein the first lighting component comprises a first kind of LED chips, a first kind of package bodies and fluorescent powder filled in the first kind of package bodies and corresponding to the first kind of LED chips. By combining electroluminescence of the LED chips with photoluminescence of the fluorescent powder and selecting the proper type of the LED chips to reasonably match with the broadband-spectrum fluorescent powder, light emitted by the LED chips can trigger the fluorescent powder while being combined with the same to form continuous broadband-spectrum light sources, and the light filter performs spectrum screening to obtain the continuous solar simulator light source good in matching with required application, so that the solar simulator light source can be widely applied to accurate simulation of solar continuous spectrum and realization of a broadband-spectrum near-infrared light source and the like.

In a solar simulator for measuring the current-voltage characteristics of photovoltaic devices, it is to provide a measurement method using a solar simulator in which locative unevenness of irradiance on the test plane of the test plane side is drastically improved, not in a light source side, and a means for adjusting irradiance and the like.when an object is the photovoltaic devices Ms, and the current-voltage characteristics are measured by a solar simulator Ss equipped with a light source composed of a lamp and a reflector, and a part for setting the object to be measured, in which it is possible to dispose an irradiated test plane of the object to be measured opposite an illuminating surface of said light source, the whole test plane of said photovoltaic devices is divided imaginarily into a plurality of sections and a selected member for adjusting irradiance is disposed opposite the test plane of each imaginary sections so as to equalize or substantially to equalize the irradiance by the light source at every irradiated test plane of the sections, after which light from said light source is directed onto the test plane of the object to be measured.

The invention discloses an in-situ measurement device and a measurement method of a scattering coefficient spectrum of an atmospheric aerosol. The measurement device comprises an integrating sphere, a solar simulator, a fiber spectrometer and a computer, wherein an internal reflectance coating of the integrating sphere is made from polytetrafluoroethylene, and collection efficiency of the scattered light is improved based on the advantage of truncated corners of the internal reflectance coating, so that the sensitivity in the measurement of the scattering coefficient spectrum is effectively strengthened. In the device and the method, a measure equation for the scattering coefficient spectrum in a wave range from 350 nm to 1000 nm is established, so that the difference of conversion responsivity caused by the difference of the wavelength in a photoelectric conversion process can be effectively avoided. The device and the method can detect evolution rules of the scattering coefficient spectrum of the atmospheric aerosol with the temperature, the humidity and the atmospheric pressure, and have the characteristics of being simple in principle, convenient in operation and fast in detection speed.

The invention discloses a visible light scattering dynamic characteristic testing system of a space target. The visible light scattering dynamic characteristic testing system comprises a testing guide rail, a posture analog system, a solar simulator, a panorama testing vehicle, a detection system and a central control system. The testing guide rail is a vertical type arc plate guide rail, the panorama testing vehicle is mounted on the testing guide rail, and the detection system is mounted on the panorama testing vehicle. The posture analog system is mounted at the center of the circle of the vertical type arc guide rail. The solar simulator is mounted on the connecting line of three points including the center of the circle of the vertical type arc guide rail, the position forming an angle of 0 degree with the testing guide rail and the position forming an angle of 180 degrees with the testing guide rail. The central control system is mounted at the position, not irradiated by the solar simulator, of a laboratory where the testing system is placed. The visible light scattering dynamic characteristic testing system of the space target solves the visible light scattering dynamic characteristic problem for simulating observed targets of testing space at different observation azimuth and elevation positions under different sun irradiating azimuth and elevation conditions in the laboratory, testing results can supply rational suggestions to space ontrack experimental task planning, and a basis is provided for developing visible light detection sensors.

A volt-ampere characteristic testing system of a solar cell photovoltaic device belongs to a photoelectric testing device and solves problems that an existing testing system needs to set irradiance through manual operation, and irradiance determining and sample battery testing cannot be carried out simultaneously. The volt-ampere characteristic testing system comprises a sunlight simulator, an irradiance choosing device, an irradiance determining device, a battery testing device and a computer. The sunlight simulator is composed of a an xenon lamp on an optical path and filtering sheets with air quality of 1.5, and the irradiance choosing device and the irradiance determining device are sequentially arranged on an output optical path of the solar simulator. A direct current voltage source supplies power to the irradiance choosing device and irradiance determining device. The battery testing device is connected with the computer through a general purpose interface bus. The volt-ampere characteristic testing system is simple in assembly, fast and easy to operate, all required devices and components can be bought at the market, elements can be acquired easily, and the volt-ampere characteristic testing system can accurately and automatically give out a characteristic curve in real time.

The invention discloses a method for overcoming the ovalization of an irradiating surface of an off-axis collimating type solar simulator, relates to a method for overcoming the ovalization of the effective irradiating area of the off-axis collimating type solar simulator and belongs to the technical field of optical designs. The technical problem to be solved is to provide the method for overcoming the ovalization of the irradiating surface of the off-axis collimating type solar simulator. The technical scheme comprises the following steps of: establishing a structural model of an optical system of an off-axis reflection collimating type solar simulator; selecting an off-axis angle of the optical system; regulating a relative aperture of the optical system; regulating an optical integrator to be in a minimal spherical aberration value state; optimizing optical parameters of a spherical surface collimating mirror; and performing fine tuning on a geometric position of the spherical collimating mirror on an optical axis. The method solves the problem of the ovalization of the irradiating surface output by an off-axis collimating optical system with a large relative aperture and a large off-axis angle, and meets design requirements.

An apparatus may have a light source configured to generate light, a reflector configured to collect the light and direct the light in a desired direction, a spectral filter assembly configured to receive the light from the reflector. The spectral filter assembly may have a stationary frame and a plurality of filter elements supported by the stationary frame. Filter elements of the plurality of filter elements may simultaneously filter a desired quantity of light within wavelength band to provide a filtered output light beam. A homogenizer may be configured to receive the filtered output light beam and produce a homogenized light beam having a substantially uniform irradiance distribution across a cross-section of the homogenized light beam.

The invention provides a method for measuring a deviation between a digital sun sensor measuring coordinate system and a prism coordinate system. The method includes installing a digital sun sensor on a high precision three-axle table, using a solar simulator for simulating solar ray vector to irradiate the digital sun sensor, using a theodolite for measuring the deviation of Z-axis in the prism coordinate system of the digital sun sensor relative to the Z-axis of the measuring coordinate system, and using two theodolites for measuring the deviation of X-axis in the prism coordinate system of the digital sun sensor relative to the X-axis of the measuring coordinate system and the deviation of Y-axis in the prism coordinate system of the digital sun sensor relative to the Y-axis of the measuring coordinate system. The measuring coordinate system of a detector optical filter and the prism coordinate system are connected by means of light measuring mode, and the measuring of the coordinate system relationship is completed on the ground. The measured deviation between the coordinate systems can be used for arranging and installing the satellite directly, and can be provided for the attitude and orbit control system to amend the inflight measuring coordinate system directly. The method has high reliability, high credibility, and high enforceability.

The converting method for measuring datum of sun sensor includes calibrating the inside and outer parameters of sun sensor with a sun simulator and a high precision two-axis turntable. A diaphragm receiving screen is set between the sun simulator and the sun sensor, and a CCD image locating and aligning system is used to judge the verticality of the simulating sunlight to the reflecting surface of the cubic mirror, so as to complete the measurement on the vector relation of two reflecting surface normal directions of the cubic mirror and simulating sunlight. By means of the vector relation and the outer parameters of the sun sensor, the converting matrix for conversion from the measuring coordination system of the sun sensor to the coordination system of the cubic mirror is determined. Corresponding conversion is completed. The device for the converting method is also disclosed. The present invention has simple method and high precision.

The invention relates to a solar simulator, particularly relates to a solar simulator for testing solar cells, and belongs to the technical field of detection for solar cells. The solar simulator realizes that a light source is changed into a surface light source irradiating uniformly. The solar simulator is mainly technically characterized by comprising a light guide component, one end of the light guide component is an input end of a fiber bundle and is connected with a light filter, the other end of the light guide component is a fiber output end and is connected with a baffle on the top of a light source box, a solar cell testing platform is mounted above the baffle, a light receiving surface of the platform is provided with a groove corresponding to an output port of the fiber bundle, and light of a light source is condensed to the light filter from a convex lens, and is uniformly transmitted to the solar cell testing platform via the fiber bundle. The solar simulator is provided with a xenon lamp, the light of the light source is focused at first and then is uniformly scattered on the testing platform by fiber light guide technology, and the requirement on uniform and stable irradiation for testing electric performances of the solar cells is met.

The invention discloses a device for measuring point source stray light transmission coefficient in large dynamic range, belonging to the field of photoelectric test and obtaining stray light transmission coefficient in existing optical system. A horizontal turntable of the device is equipped with an optical system to be measured and is used for controlling the optical system to be measured to rotate within a horizontal plane; optical components include an aperture diaphragm, a coude reflector and a large-caliber collimator tube; light emitted by a sun simulator is projected onto the coude reflector via the aperture diaphragm and then projected onto the large-caliber collimator tube after being reflected by the coude reflector, the exit light beam of the large-caliber collimator tube is large-caliber parallel light which is projected onto an entrance caliber of the optical system to be measured; detectors are classified as a front part detector and a rear part detector which are respectively installed on a light receiving face and a backlight face of the optical system to be measured, and the detectors are used for detecting front and rear radiant illumination of the optical system to be measured. The device is applied to spatial optical systems.

A solar simulator combines mercury lamps and halogen lamps, to improve upon conventional solar simulators using halogen and infrared lamps which cannot recreate an environment close to that under real sunlight, and upon solar simulators using expensive and fragile metal halide lamps and arc xenon lamps. An environment recreation laboratory for solar simulation includes a lamp bank mounted at an upper portion thereof and including a plurality of halogen lamps, halogen filter lamps being halogen lamps provided with an infrared filter, respectively, and mercury lamps. A temperature control unit includes a cooling unit that discharges air to cool the lamp bank, and an air conditioner that distributes the air discharged by the cooling unit. An electrical panel controls operations of the lamp bank and the temperature control unit, such that an environment within the environment recreation laboratory may very closely simulate the environment under real sunlight.

The invention provides a divergent type solar simulator optical system realizing large spot diameter and high uniformity. The system comprises an ellipsoidal condenser lens 1, a xenon lamp light source 2, a turning plane mirror 3, an optical integrator 4, an optical axis indicating device 5 and an optical filter 6, wherein the xenon lamp light source 2 is located at a first focus F1 of the ellipsoidal condenser lens 1, light passes through the ellipsoidal condenser lens 1 and is converged at a second focus F2 of the ellipsoidal condenser lens 1, and the optical integrator 4 and the optical filter 6 are sequentially arranged at the second focus F2. The system can simulate solar irradiation with the spot diameter of 1 m and the uniformity higher than 10% in the working position of 10 m and has an optical axis aligning function, and the aligning precision is high than 2'.

A solar simulator having improved measurement precision, including an array of light emitters having point light emitters planarly arranged in a given range, an effective irradiated region spaced apart from a surface having the array thereon, and a portion which absorbs at least a part of light from a direction which passes through a gap between the individual point light emitters. In a preferred aspect, the light absorption portion includes an absorption surface disposed in at least a part of the gaps between the light emitters. In another preferred aspect, a translucent board holds the light emitters and has a translucent portion corresponding to at least a part of the gaps between the light emitters, and an absorption layer at a position for absorbing light from the direction which passes through the translucent portion.

A solar cell simulator that is cylindrically symmetrical to test photovoltaic devices that are flexible. A particular embodiment would be made from plexiglass or similar acrylic material. The present invention produces a spectrum that simulates the spectral distribution of solar light that we observe on the Earth's surface. The simulator would be comprised of a tubular pulsed light source, a pulsed power supply, a tubular light spectrum filter, an IV electrical measurement station, a cylinder-shaped module holder to place the flexible large-area module during the measurement. All cylinders share the same central axis. This maintains radial uniformity of all light intensity and can be used for electrical measurements (IV curves under illumination) of flexible large-area PV modules.

The invention provides an integrated testing system for dynamic characteristics of visible light scattering and laser scattering of a space target. The system comprises a test track, a panoramic test platform, an attitude simulation subsystem, a solar simulator, a laser transmitting / receiving subsystem, a visible light detecting subsystem, a low reflection / scattering background and a central control subsystem. With the system, simulated measurement of visible light scattering characteristics of a measured target at different observation azimuth angles and angular altitudes in space with different sun illumination azimuth angles and angular altitudes in a laboratory can be realized; and the testing result can be used as a basis of the research of a visible-light detection sensor. Meanwhile, simulated measurement of laser scattering characteristics of a measured target in space at different laser radiation azimuth angles and angular altitudes in a laboratory can be realized and the testing result can be used as a basis of the research of a laser detection sensor.

The invention discloses a semi-physical simulation system of a satellite power supply. The system is characterized in that a solar simulator, a bus load, a storage simulator and the like are connected with a power supply control unit based on a way of combination of software and hardware. A main control computer carries out ground simulation of a satellite power supply system. An on-orbit working mode of a satellite power supply system is simulated and state switching of various on-orbit operation conditions is realized; setting of various power system parameters and operating state monitoring are completed and integration of storage battery charging and discharging management is realized; and the operation demonstration of the power supply system is realized and various teaching training modes are set, so that teaching and training work of various engineering professionals can be developed flexibly.

A method of calibrating a light source used to simulate the sun in solar cell testing apparatus. The method comprises using a control cell to measure the intensity of light from the light source at a first wavelength range as a function of output short circuit current, comparing the measured intensity to a targeted intensity value, optionally adjusting power to the light source until the measured intensity is substantially equal to the targeted intensity value, repeatedly using a calibrated monitoring module to periodically measure monitoring measured values for monitoring module output short circuit current, monitoring module output open circuit voltage and monitoring module quantum efficiency, obtaining average values for monitoring module output short circuit current, monitoring module output open circuit voltage and monitoring module quantum efficiency, comparing the measured values with the average values, and determining if differences in measured values and average values are within an acceptable limit.

The invention discloses a high-concentration collimating solar simulator optical system, which relates to the technical field of optical design and is used for solving the problems of small operating space for sample test in a high-concentration solar simulator optical system, inconvenience in clamping and limit on uniform distribution of light caused by the adoption of a hollowed cubic conical integrator in the system. In the system, a xenon lamp light source is positioned at the first focal point of an ellipsoidal collecting mirror; an angle of 15 degrees is formed between an AM1.5 spectral filter plate and the optical axis of the ellipsoidal collecting mirror; an optical integrator assembly is positioned at the second focal point of the ellipsoidal collecting mirror, and comprises an optical cement plate and a plurality of regularly-hexagonal element lenses; the plurality of regularly-hexagonal element lenses are regularly arranged on the optical cement plate to constitute two groups of lenses; and the two groups of lenses are arranged coaxially and oppositely. By adopting the high-concentration collimating solar simulator optical system, the irradiance uniformity on an effective irradiation surface is increased effectively.

The invention provides a solar simulator irradiance uniformity detection device in a space environment. The detection device comprises a test stand, a cable in a tank, test units, a cable outside the tank, a measurement and control cabinet outside the tank, and a control terminal. The test stand, the test units and the cable in the tank are arranged in a vacuum tank. The test units are arranged on the test stand. The test units are connected with the cable outside the tank through the cable in the tank. The cable outside the tank is connected with the measurement and control cabinet outside the tank. The measurement and control cabinet outside the tank is connected with the control terminal. The test stand is in a cross-shaped structure. Five test units are arranged. One of five test units is located at the center of the cross-shaped test stand. The other four test units are respectively arranged at upper, lower, left and right positions one meter from the center of the cross-shaped test stand. The invention further provides a detection method of the detection device. The detection device provided by the invention has the advantages of lightweight design, simple test principle, easy operation and good stability, can be operated by a person, and can adapt to a special low-temperature vacuum environment.

The invention relates to a target heat radiation analyzing method in a space environment simulating device. A space three-dimensional simulation scene is firstly established adopting a simulation method, and a heat effect model and a test target is included in the scene; then a heat equation of the test target is established according to determined heat effect model; then a working condition parameter is input, and solution is conducted on the heat equation; and a temperature field and an infrared radiation field of the whole scene are finally generated according to the solved equation. According to the target heat radiation analyzing method in the space environment simulating device, a large spherical vessel, a heat sink, a solar simulator, a background radiation simulator, a test track and device, a rotary table and an observation window simulation scene are adopted, radiation heat transfer analyzing is conducted coupling three-dimensional unsteady state, and thus radiation field with waveband of 30-50 mum can be accurately simulated.

The invention relates to an optical system of a solar simulator. An optical integrator component of the optical system consists of two element lens arrays, each element lens array is formed by a plurality of hexagonal element lens hermetically connected and arrayed and optically contacting on an optical contact plate, the two element lens arrays are reversely mounted on the same optical axis, the front element lens array is a field lens array and the rear element lens array is a projection lens array. A xenon lamp is arranged at the first focus of an elliptical light condensing lens, the field lenses in the optical integrator component are arranged at the second focus of the elliptical light condensing lens, the projection lenses in the optical integrator component are arranged between the field lenses and al light-beam collimation angle diaphragm which is arranged on the front focal plane of a collimation objective lens, light emitted by an xenon arc of the xenon lamp is reflected by the elliptical light condensing lens and a planar reflecting lens, condensed and projected onto the field lenses and converted into parallel light after passing the field lenses and the projection lens, and parallel light emitted by the projection lenses can be condensed and projected onto an irradiation surface through the collimation objective lens. The requirement that solar light beam collimation angle and output energy density can be solar constants can be met.