Multifunctional grid front-end for dispersed energy resources

Distributed energy resources such as photovoltaic, fuel cells and micro turbines are emerging into power supply systems. Strategies of grid control integration, to emerge these sources are still lagging behind. These sources require interfacing units to provide the necessary crossing point to the grid. The cores of these interfacing units are power electronics technologies such as inverters (multifunctional grid front-ends) since they can provide not only their principle interfacing function, but also various utility functions. This paper presents the possibility of adapting the isochronous control methodology, used by synchronous generators in conventional power systems, to provide load sharing and control for inverters as front-end.