Inverter for feeding electric energy into a power supply system

An inverter for feeding electric energy into a power supply system (2) with a respective input (6, 7) intended for connection to the negative or positive output (4, 5) of a direct voltage generator (1), said input (7) intended for connection to the negative output (5) being adapted for grounding, with two outputs (8, 9) intended for connection to said power supply system (2), at least one output (8) being provided with a mains reactor (L2) and with a device for converting a direct voltage at the inputs (6, 7) into an alternate voltage at the outputs (8, 9), said device comprising a storage reactor (L1) and switches (S1 through S6), said device including a bridge circuit with two current paths (S4, L1, S6 or S5, L1, S3 respectively), of which the one is designed for providing positive output currents and the other one for providing negative output currents, a switch unit for switching at mains frequency between the two current paths (S4, L1, S6;

• S5, L1, S3) and a coupling capacitor (C1) connecting said bridge to said switch unit,
• characterized in
• that said bridge circuit is configured to be a H-bridge, the two current paths (S4, L1, S6;
• S5, L1, S3) each comprising two switches (S4, S6;
• S5, S3) and the storage reactor (L1) being common to both circuit paths, a first series circuit consisting of two switches (S3 and S4) and a second series circuit also consisting of two switches (S5 and S6) being connected in parallel, as well as that a connection point (11) of the switches (S5 and S6) of the second series circuit is connected to a connection point (12) of the two switches (S3 and S4) of the first series circuit through the storage reactor (L1) and that the switches (S3 through S6) of the first and the second series circuit and the storage reactor (L1) form the bridge circuit with the current paths (S6, L1, S4 as well as S5, L1, and S3.