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Title:
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Een technische evaluatie van moderne netgekoppelde inverters tot 1,5 kW (Temni)
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Author(s):
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Published by:
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Publication date:
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ECN
Energy in the Built Environment
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1-5-2002
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ECN report number:
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Document type:
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ECN-C--02-051
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ECN publication
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Number of pages:
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Full text:
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33
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Download PDF
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Abstract:
Recently several new inverters have been developed in the Netherlandsand Germany. These new inverters must prove themselves in order to be
competitive in the present market. Because these inverters are new it
is expected that new materials, components and techniques have been
used that are new for grid connected inverters. Due to the substantial
number of new inverters we have the opportunity to compare these inverters
with the older inverters. Our objective is to acquire information about
used techniques, materials, expected lifetime and electrical parameters
of old and new inverters in order to improve the reliability of inverters.
Two old inverters and seven new inverters are examined. First the electrical
parameters of the inverters are quantified with the "Test Facilities
for Certification of Grid Connected PV-Systems" at ECN. Secondly the
inverters are visually examined for new techniques and materials by
opening the inverter?s enclosure. And thirdly the impact of these innovations
will be discussed.
The electrical tests show that it is difficult to improve the electrical
performances figures of inverters with respect to the current generation
of inverters. Companies developing new inverters make use of their own
techniques with which they are familiar. To improve a PV system with
respect to costs and lifetime expectancy, new concepts for inverters
must be introduced, making use of innovative techniques. Two of the
tested new inverters apply significant innovations. A new generation
is born with an integral concept for technology.
cabling and installation of the inverter.
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