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Title:
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PV-wirefree: redesigning and innovating grid-connected PV-systems
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Author(s):
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Sinke, W.C.; Oldenkamp, H.E.; Jong, I. de
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Published by:
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Publication date:
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ECN
Solar Energy
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1-10-2002
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ECN report number:
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Document type:
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ECN-RX--02-053
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Conference Paper
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Number of pages:
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Full text:
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4
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Download PDF
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Presented at: PV in Europe - From PV Technology to Energy Solutions Conference and Exhibition, Rome, Italy, 7-11 oktober 2002.
Abstract:
In this paper a new concept for designing grid-connected PV-systemsis presented: PV-wirefree, aiming at minimizing PV BOS costs ? Balance
of System costs - and inherently safe PV-systems. The guiding design
principles used are: minimize dc-voltage, minimize components and material,
integrate functions, simplify the PV-system and design for easy installation.
Only one solution appeared to meet the goals: the PV-modules have to
be connected in parallel to keep the dc-voltage as low as possible.
The low dc-voltage also allows omitting many of the safety components
used in series connected PV-system. To minimize the number of components
even more two new PV-wirefree components are designed in which different
functions are integrated. The most innovative new component is the PV-wirefree
mounting bus, a current carrying mounting frame. So, a PV-wirefree system
does not include expensive dc-wiring anymore, whereas the number of
connectors is reduced considerably. In this paper the new PV-wirefree
components are presented and safety issues related to paralleling PV-modules
are discussed, as well as the additional advantages of PV-wirefree regarding
reliability and efficiency.
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