NGCPV: A New Generation of Concentrator Photovoltaic Cells, Modules and Systems

The acceptance angle of concentrator modules measured by short circuit current Isc is always larger than that by maximum power Pm even by use of advanced concentrator optics that keep uniform illumination onto the concentrator cells. The purpose of this study is to investigate the cause of that myth. An expanded Monte Carlo method that calculates acceptance angle of CPV modules was developed with considering 2dimensional misalignment error vector. It was shown that the gap from Pm-based acceptance angle from that of Zsc-based was a function of deviation of assembles misalignment in the module. The rough rule for acceptable assembles misalignment is that the standard deviation of assemble misalignment level will be less than 10 % of acceptance angle of the optics.

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Optically powered active sensing system for Internet Of Things

Gao

Wang

Yin

et al. 2014

SPIE Proceedings

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Internet Of Things (IOT) drives a significant increase in the extent and type of sensing technology and equipment. Sensors, instrumentation, control electronics, data logging and transmission units comprising such sensing systems will all require to be powered. Conventionally, electrical powering is supplied by batteries or/and electric power cables. The power supply by batteries usually has a limited lifetime, while the electric power cables are susceptible to electromagnetic interference. In fact, the electromagnetic interference is the key issue limiting the power supply in the strong electromagnetic radiation area and other extreme environments. The novel alternative method of power supply is power over fiber (PoF) technique. As fibers are used as power supply lines instead, the delivery of the power is inherently immune to electromagnetic radiation, and avoids cumbersome shielding of power lines. Such a safer power supply mode would be a promising candidate for applications in IOT. In this work, we built up optically powered active sensing system, supplying uninterrupted power for the remote active sensors and communication modules. Also, we proposed a novel maximum power point tracking technique for photovoltaic power convertors. In our system, the actual output efficiency greater than 40% within 1W laser power. After 1km fiber transmission and opto-electric power conversion, a stable electric power of 210mW was obtained, which is sufficient for operating an active sensing system.

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NGCPV: A New Generation of Concentrator Photovoltaic Cells, Modules and Systems

Cited by 3 publications

References 18 publications

Module optical analyzer: Identification of defects on the production line

Module optical analyzer: Identification of defects on the production line

Why are acceptance angle of P<inf>m</inf> and I<inf>sc</inf> different in spite of uniform illumination onto concentrator solar cells?

Optically powered active sensing system for Internet Of Things

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