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Title:
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AC PV module inverters with full sine wave burst operation mode for improved efficiency of grid connected systems at low irradiance
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Author(s):
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Published by:
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Publication date:
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ECN
Solar Energy
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1997
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ECN report number:
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Document type:
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ECN-RX--97-041
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Article (scientific)
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Number of pages:
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6
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Published in: Paper presented at the 14th European photovoltaic solar energy conference and exhibition, 30 June - 4 July 1997, Barcelona, Spai (), , , Vol., p.-.
Abstract:
Introducing grid connected photovoltaic (PV) systems, the differencebetween one-phase and three-phase power delivery is explained, highlighting
the issue of buffering storage in one-phase PV inverters. This paper presents
and explains burst operation mode as a way to improve performance of
grid-connected one-phase PV inverters without need of major additional
investments. At low power, intermittent inverter operation at optimum power
for a small fraction of time is preferred over continuous operation at low
power, thus saving the difference between operating and standby power
consumption for major parts of the operating time, and raising part-load
efficiency up to optimum values. 11 figs., 9 tabs.
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