Development of Transfer Standards for SSL Measurement

Abstract

Solid-state lighting (SSL) is the most energy-efficient lighting technology in the present lighting market. With high efficiency, good quality and nice lighting appearance, SSL products are highly expected to replace low efficient and environmental unfriendly incandescent light bulbs in the near future. An international organization has been established to develop harmonized regulations and global assessment scheme for SSL products. As a result, a transfer standard is needed to check the reliability of measurement setups in test laboratories worldwide. This project aims of designing a transfer standard featured with similar electrical behavior as SSL devices. Key features of the transfer standard are rapid stabilization and switchable configuration to simulate typical SSL topologies. The transfer standard has been designed into two types of device: the first type is a power electronics converter using a constant-power controller, and the second type is a dummy load device simulating the voltage and current waveforms of SSL products. It has been proved that two types of transfer standards can both minimize the fluctuations and uncertainties in measurement, so they can serve as power reference to check the reliability of measurement setups in test laboratories.