VOLTAGE INVERTER Russian patent published in 2003 - IPC

FIELD: converter engineering; power supply to three-phase inductive loads. SUBSTANCE: inverter has transistors connected into three-phase bridge and shorted out by opposing diodes, three current transducers inserted into output leads of voltage inverter, six capacitors that function to short out transistors, voltage limiter, and circuit of two series-connected capacitors that short out transistors. Common point of capacitors is connected to ground terminal of voltage inverter. Inverter also has six circuits of series-connected double-input AND gates and output stages whose outputs are connected to control electrodes of transistors and six capacitors. Pulse distributor outputs are connected to first inputs of double-input AND gates and its input, to output of master oscillator. Comparators have their outputs connected to second inputs of double-input AND gates and comparator inputs are paired and connected to current transducer outputs. EFFECT: improved electromagnetic compatibility of voltage inverter with supply mains and load. 1 cl, 2 dwg