Abb Schweiz Ag

Marici Holdings the Netherlands B.v.

Andrea Becattini

Sauro Macerini

Guido Fiesoli

A DC/AC converter apparatus is disclosed for converting DC power of a DC energy source into AC power for supplying a load and or the utility grid. The DC/AC converter apparatus is adapted to automatically control the amount of both active and reactive electrical power that is exchanged with the utility grid in order to optimize the electrical power usage of the micro grid.

DC/AC converter apparatus comprising means for controlling the reactive power and power conversion and generation system comprising such DC/AC converter apparatus

A DC/AC converter apparatus comprising: input terminals to be connected to a DC power source; a DC/AC conversion unit configured to receive input DC electrical power via the input terminals and to convert the input DC electrical power into AC electrical power, the DC/AC conversion unit comprising two output terminals; two AC backup output terminals; a switch arrangement to selectively connect the two AC output terminals to the grid terminals and to the two AC backup output terminals; a control unit associated to the switch arrangement and configured to: drive the switches of the switch arrangement, sense when an AC voltage at the grid terminals is below a predetermined threshold; and automatically drive the switches of the switch arrangement to disconnect the two AC output terminals from the grid terminals and to connect the two AC output terminals to the two AC backup output terminals when the AC grid voltage is below a said predetermined threshold.

DC/AC converter apparatus configurable as grid-connected or stand-alone and power conversion and generation system comprising such DC/AC converter apparatus

Growing community of inventors

Cavriglia, Italy

Andrea Becattini