INDEPENDENT VOLTAGE INVERTER TO SUPPLY LOAD THROUGH TRANSFORMER WITH LOW COUPLING COEFFICIENT BETWEEN ITS WINDINGS Russian patent published in 2015 - IPC H02M7/797 

FIELD: electricity.

SUBSTANCE: invention is related to electric engineering, in particular to devices for direct to alternating current conversion. An independent inverter (1) receives input voltage from a direct current source (2) and it feeds the load (4) through a transformer (3) with a low coupling coefficient between its windings. The inverter (1) is composed of the following components: an input capacitor (5), a valve switch (6) and a series-resonant circuit (7). The valve switch of a bridge type consists of arms (13), (14), (15) and (16), each of them consisting of a transistor and a diode. The series-resonant circuit (7) and a primary winding (23) of the transformer 3 are connected to output terminals (21) and (22) of the inverter (1). A secondary winding (24) is coupled to input terminals (25) and (26) of a rectifier (10) included into the load circuit (4). Between input terminals (17) and (18) of a semi-bridge valve switch (6) with capacitance divider there are two capacitors (31) and (32) of the same capacitance. The function of the direct current source (2) is implemented by accordant series connection of two direct current sources (34) and (35) having the same voltage.

EFFECT: reducing currents of the independent inverter as well as the capacitance, size and weight of its input capacitor.

5 cl, 6 dwg