PROJECT TITLE :
Operating Limits of Three-Phase Multifunctional Photovoltaic Converters Applied for Harmonic Current Compensation - 2017
The most objective of a photovoltaic (PV) inverter is to inject the PV power into the ac-grid. Generally, thanks to variations in solar irradiance, inverters operate bellow their rated current. So, this current margin will be used to ancillary services, like harmonic current compensation. However, it is necessary to check the photovoltaic inverters voltage and current capability effects during harmonic current injection. In this context, this work presents an algorithm to outline the restrictions imposed by the dc-link voltage and the inverter current. The algorithm is validated through a simulation and an summary of the simulation characteristics also are presented in this paper. Simulation results show that the algorithm can well estimate the quantity of current that may be synthesized by the converter. According to the results, it's demonstrated that the dc-link voltage, the characteristics of the filter and also the harmonic order contribute to the quantity of harmonic current that may be synthesized by the converter.
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