Patent ID: 8749092

Claim:
Apparatus for providing an input DC voltage for a photovoltaic inverter ( 4 ), comprising: a first photovoltaic generator ( 9 ) including a first terminal ( 12 ) for connection to a positive DC input terminal ( 17 ) of the inverter ( 4 ) and a second terminal ( 13 ); a second photovoltaic generator ( 11 ) including a first terminal ( 14 ) and a second terminal ( 16 ) for connection to a negative DC voltage input terminal ( 18 ) of the inverter ( 4 ); and, an electronically switchable coupling arrangement means ( 3 ) for coupling the first and the second photovoltaic generators ( 9 , 11 ) selectively to be effectively in a series circuit or in a parallel circuit arrangement; and, a control arrangement ( 7 ) for controlling the operation of the inverter and of the electronically switchable coupling arrangement means ( 3 ).