The Add-on project targets the integration and coordination of several ancillary services in PV converters. The main idea is to develop an interface for the converter which produces an additional reference signal for the current controller able to realize Low-Voltage-Ride-Through, Resonance Damping and Active Filtering in the LV grid. The measurements of the grid impedance are exploited for the calculation of the currents. As a result, the power quality and the stability margins of the grid are highly improved and the cost for additional converters is saved. [read more]

The project is funded by Bundesministerium für Wirtschaft und Energie and employs one Post-Doc and one PhDs student. As working partners, it involves the Fachhochschule Kiel which is responsible for the impedance measuring system and the WSTECH which develops the Add-on converter prototype.