A new generation of compact solar simulators

Compact solar simulators possess unique advantages of small size, illumination geometry ideal for module active-side-down orientation (but which can be inverted), long constant-amplitude pulse duration, and ease of factory line integration. A new generation of these compact instruments has been developed which exceeds IEC 60904-9 Class AAA specifications for irradiance spectrum, spatial uniformity, and temporal stability by factors of two or more. A totally new approach to the internal optical design based on Monte Carlo ray trace modeling has resulted in improved optical efficiency without thermal problems, power limitations, or reduced lamp life. This new generation of compact simulators can produce constant amplitude optical pulses of 130 ms or more which have been shown necessary for accurate testing of some newer design modules - insufficient pulse duration can lead to severe underestimate of P_max and subsequent loss of revenue for the module manufacturer.