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

A power conversion and generation system configured to produce and deliver AC power to a single phase AC grid comprising:

• a power generation unit for producing DC power;
• and
• 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 said input terminals and to convert said input DC electrical power into AC electrical power, said DC/AC conversion unit comprising two AC output terminals;
• two AC backup output terminals;
• a switch arrangement to selectively connect said two AC output terminals to the grid terminals and to said two AC backup output terminals;
• a control unit associated to said switch arrangement and configured to drive the switches of said switch arrangement, wherein said control unit is further configured to sense when an AC voltage at said grid terminals is below a predetermined threshold, and to automatically drive the switches of said switch arrangement to disconnect said two AC output terminals from said grid terminals and to connect said two AC output terminals to said two AC backup output terminals when the AC voltage at said grid terminals is below said predetermined threshold.