Light Sources and Irradiance Spectrum of LED solar simulator for photovoltaic devices: A Review

Abstract

There is a growing demand for more applications for photovoltaic systems, which are a significant electricity source from renewable energy. Its performance test using a solar simulator is required. Light sources of solar simulator including halogen lamps and xenon lamps have been adapted to LED as a result of lamp technology. The goal of this article is to review LED solar simulator (LSS) light sources and spectrum for photovoltaic devices. Review articles from ScienceDirect and IEEE Explore from 2003 to 2022 were chosen as the basis for this analysis. The examination of spatial non-uniformity (S NE ), temporal instability, and spectral match (SM) under international standards was the result of the LSS's thorough investigation of the LED light sources design. The review discovered that LED-halogen solar simulators (LHSS) and LSS are the two main categories of solar simulator based on LED. The advantage of LHSS is that just one type of light source is required for the spectrum distribution on the infrared range. The drawback is that SM cannot be in class A. While LSS can reach class AAA and deliver good spectral coverage results in accordance with the new standard, IEC60904-9:2020, employing 10-23 LEDs of various wavelengths. The current state of LSS development is to design and build a modular LED array. S NE is still an important indicator of LSS that is reflected in the source design that is stable, economical, and sustainable. The new IEC 60904-9:2020 A+ category is discussed. The future direction of LSS for PV applications is suggested.