At the critical stage when photovoltaic technology is advancing towards higher efficiency and better reliability, solar simulators, as the "gold standard" for battery performance testing, their accuracy and stability directly determine the conversion efficiency of research and development achievements and the reliability of product quality. The steady-state solar simulator , with its outstanding spectral matching, irradiation uniformity and stability, is becoming a core tool for photovoltaic enterprises and research institutions to break through technical bottlenecks and seize market opportunities.
steady-state light field, defining a new benchmark for test accuracy
The complexity of sunlight lies in the dynamic changes of its spectral distribution, light intensity and spatial uniformity. Although traditional pulse simulators can quickly generate light spots, their instantaneous characteristics can easily cause fluctuations in test data, making it difficult to meet the demands of high-precision research and development. The steady-state solar simulator adopts a continuous light output mode. Through a precise optical system and intelligent temperature control technology, it ensures that the light intensity and spectrum remain constant during long-term testing, with an error controlled within ±0.5%. This "steady-state" characteristic provides an ideal environment close to natural light for battery IV characteristic tests, EQE (external quantum efficiency) analysis, long-term aging tests, etc., making every set of data a "true value".
grade A standard, fully matching real sunlight
According to the international standard IEC 60904-9, A solar simulator must meet the A-level requirements in the three dimensions of spectral matching, irradiation uniformity and irradiation stability to be called "3A-level". Our steady-state solar simulator strictly adheres to this standard. Through customized LED light source arrays and optical integrator design, it achieves:
Spectral matching degree grade A : It covers the full spectrum from 350nm to 1150nm, highly consistent with the AM1.5G standard solar spectrum, with an error of less than ±5%, ensuring the accuracy of testing for emerging materials such as perovskites and organic photovoltaics.
Irradiation uniformity grade A : The irradiance deviation within the spot range is less than ±2%, supporting full-area testing of large-sized solar cells (such as 182mm, 210mm) or modules, avoiding performance misjudgment caused by edge effects.
Irradiation stability grade A : The light intensity fluctuation is controlled within ±0.5%, meeting the requirements of long-term stability testing, such as LID (photodegradation) research for batteries or aging assessment of components.
Large coverage design, suitable for full-size test scenarios
With the continuous increase in the size of photovoltaic modules, the irradiation area of traditional simulators has become an efficiency bottleneck. Our steady-state solar simulator adopts a modular LED matrix design, supporting customizable light spots ranging from 100mm×100mm to 600mm×600mm, easily handling laboratory small sample verification, pilot line mass production testing, and power station component evaluation. Combined with a height-adjustable optical path system, the equipment can flexibly adjust the test height to ensure uniform light exposure for cells of different thicknesses (such as bifacial cells), providing an accurate test platform for advanced technologies such as tandem cells and heterojunction (HJT).
Intelligent control simplifies complex testing processes
The intelligent control system equipped on the device integrates functions such as spectral adjustment, light intensity control, data acquisition and analysis.
Spectral programmable : Supports independent adjustment in segments from 350nm to 1150nm. Users can customize the spectral distribution to simulate lighting conditions in space (AM0), on the ground (AM1.5G), or in special environments (such as high irradiance in deserts).
Light intensity one-click switching : Quick adjustment within the range of 0.1sun to 1sun, suitable for different test scenarios (such as battery efficiency assessment in low-light environments).
data closed-loop management : Automatically generate IV curves, EQE spectra, and calculate parameters such as battery filling factor (FF) and series resistance (Rs). Data can be uploaded to the cloud in real time and supports multi-terminal collaborative analysis.
has a full coverage of application scenarios, from laboratories to power stations
R&D innovation : facilitating the breakthrough of efficiency limits for cutting-edge technologies such as perovskite cells and TOPCon cells, and shortening the R&D cycle.
Production quality inspection : Implement full-process monitoring on the production lines of solar cells and modules to ensure product consistency and reduce the rate of defective products.
power station operation and maintenance : By using portable steady-state simulators (such as outdoor test boxes), performance degradation components in the power station can be quickly located to enhance operation and maintenance efficiency.
Certification compliance : Meeting the testing requirements of international standards such as IEC and ASTM, providing authoritative data support for product exports.
Select the steady state, select the determinism of photovoltaic testing
In the process of the photovoltaic industry moving towards "grid parity" and the "ultra-high efficiency era", the steady-state solar simulator , with its core advantages of precision, stability and intelligence, has become an "accelerator" for enterprises' technological upgrades. Driven by technological innovation, we continuously optimize equipment performance, reduce customer testing costs, and help you gain a commanding position in the global photovoltaic competition.
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