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A Maximum Power Point Tracker for Long-Term Logging of PV Module Performance

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2 Author(s)
Zimmermann, U. ; Dept. of Eng. Sci., Uppsala Univ., Uppsala, Sweden ; Edoff, M.

We present a monitoring system for the field test of photovoltaic modules. The system is designed for the monitoring of individual modules under maximum power point (MPP) conditions that allow the extraction of the energy yield of different modules under optimum conditions. It can also be used to monitor the performance and long-term stability of modules under realistic field conditions. The monitoring system consists of an individual MPP tracker attached to each module under test. The measurement data are transmitted to a central multichannel data logger by means of analog voltages proportional to the current at MPP, i.e., Imp, and voltage at MPP, i.e., Vmp, of the modules.

Published in:

Photovoltaics, IEEE Journal of  (Volume:2 ,  Issue: 1 )