Patent ID: 8493760

Claim:
Electric circuit for converting direct current into alternating current, being a single-phase inverter circuit that conditions and converts direct current into alternating current, which comprises: two direct current connections ( 1 , 2 ) to which a source of direct current is connected; a first temporary energy accumulator (C 1 ) connected between the direct current connections ( 1 , 2 ); a first branch connected between the direct current connections ( 1 , 2 ), and which comprises a first switching element (E 1 ), a first inductance (L 1 ) and a second switching element (E 2 ); a second branch comprising a third switching element (E 3 ), connected at the junction point of the second switching element (E 2 ) with the first inductance (L 1 ); a third branch comprising a fourth switching element (E 4 ), connected at the junction point of the second switching element (E 2 ) with a direct current connection ( 2 ); a second temporary energy accumulator (C 2 ) connected between the third and fourth switching elements (E 3 , E 4 ); a fourth branch comprising a fifth switching element (E 5 ) and a sixth switching element (E 6 ); with the fifth switching element (E 5 ) being connected to the junction point of the second temporary energy accumulator (C 2 ) with the third switching element (E 3 ), and with the sixth switching element (E 6 ) being connected to the junction point of the second temporary energy accumulator (C 2 ) with the fourth switching element (E 4 ); a fifth branch comprising a seventh switching element (E 7 ) that is connected between the junction point of the first switching element (E 1 ) with the first inductance and the junction point of the second temporary energy accumulator (C 2 ) with the fourth switching element (E 4 ) and the sixth switching element (E 6 ); two alternating current connections ( 3 and 4 ), to which an element selected from electrical grid and a load ready to work with alternating current, is connected; a sixth branch comprising a second inductance (L 2 ) connected between the junction point of the fifth switching element (E 5 ) and the sixth switching element (E 6 ) and an alternating current connection ( 3 ).