Operating Properties of Hybrid Inverters and Power Flow Regulators

Abstract

The paper defines the basic problems of the operation of hybrid photovoltaic systems up to 10 kWp with accumulation – the conditions for elimination of overflows into the distribution network are defined and problems related to the transitions between interconnected and islanded operation mode are identified. At the Brno University of Technology, tests of DC/AC inverters were performed, focusing on the reaction times of the inverters. The results show significant differences for each type of inverter. The results obtained were analyzed and used for the subsequent design of a hybrid photovoltaic system with accumulation.