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Authors
Advisor(s)
Abstract(s)
This paper presents an improved electronic circuit for
testing photovoltaic (PV) modules or strings by tracing their I-V and
P-V characteristics. It consists of an electronic fast varying load
based on a power MOSFET controlled by means of an innovative
sweeping gate-source voltage in order to improve the tracing of the
I-V characteristics on an oscilloscope. In order to prevent damage of
data acquisition systems and mainly for use with high voltage PV
strings, galvanic isolation is introduced for the sweeping signal as
well as current and voltage measurements. In spite of this improved
characteristics, the developed electronic circuit keeps the advantages
of low cost and simplicity. Experimental results obtained with the
electronic circuit are presented.
Description
Keywords
Photovoltaic modules Current-voltage characteristics Electronic load Fault diagnosis
Citation
Leite, V.; Chenlo, F. (2010). An improved electronic circuit for tracing the I-V characteristics of photovoltaic modules and strings.In International Conference on Renewable Energies and Power Quality (ICREPQ'10). Granada, Espanha.
Publisher
European Association for the Development of Renewable Energies, Environment and Power Quality