CONSTRUCTION OF AN I-V CURVE TRACER FOR A PHOTOVOLTAIC RESEARCH AND TEACHING PLATFORM
Keywords:
PV system monitoring, IEC 60891, I-V curve tracer, PV systems, Capacitive loadAbstract
I-V curves of photovoltaic modules play an important role in system monitoring, since they cover all
possible operating points, from open to short circuit. Also, I-V curves are a great teaching resource, since they allow
visual and quantitative evaluation of a PV module output response, due to change in ambient conditions. The modeling of
photovoltaic devices allows to obtain I-V curves by means of simulation but measured I-V curves consider every
practical aspect, from module real performance to installation issues, as well as partial shading mismatch effects and
defective equipment. This study concerns the project and construction of an I-V curve tracer, built specifically to operate
along with a research and teaching photovoltaic platform, with remote monitoring capability. The curve tracer
conception steps are presented, as well as the validation methodology