Journal
OPTIK
Volume 131, Issue -, Pages 287-291Publisher
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/j.ijleo.2016.11.072
Keywords
Current matching; Laser power converters; Mismatch losses; Monolithic series connection; Power-by-light
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Funding
- German Federal Ministry for Economic Affairs and Energy (BMWi) [0325400B]
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This work addresses the alignment of a light spot onto photovoltaic laser power converters for power-by-light applications. A model to compare the alignment tolerances of different cell designs by means of the maximum acceptable misalignment is introduced. Monolithic interconnected multi-segment cells, which are commonly used as high-voltage devices, suffer from poor current matching for misaligned light spots. We show that the maximum acceptable misalignment of circular pie-shaped high-voltage devices decreases quickly with increasing number of series connected segments. A lower limit for the precision of the alignment procedure is only 5.1% of the cell radius. This precision requirement is three times higher than for single-segment cells (15.7%). (C) 2016 Elsevier GmbH. All rights reserved.
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