Advanced modular communication concepts for data logging and conditioning in photovoltaic inverter systems

This paper describes an investigation in order to find an optimal solution for the communication of a PV installation. Most important is the quality of the collected data to be able to do detailed analysis. High investment costs make it necessary to get the PV installation controlled. In addition to that, because of variable power categories, different requirements in the data acquisition are also necessary. These requirements are overlapping various areas beginning from a LED in the PV inverter up to a data collection in a storage system. In addition to that, the price for a solution must be in a reasonable relationship to the size of the PV installation.