Fuel cell connection inverters used for unbalance compensation in low voltage distribution systems

Abstract

The aim of this paper is to evaluate the benefits that can be achieved by operating the connection inverters of the distributed energy resources as active power filters in LV distribution networks. The use of the future fuel cell inverters to compensate zero sequence currents, arising from unbalances among phases, can improve the efficiency of the distribution networks by means of reducing the total amount of losses. A common unbalanced load connected to a LV feeder where a FC inverter is present has been simulated. The reductions in the distribution power losses and compensation of zero sequence currents have been analyzed.