FIELD: electricity.
SUBSTANCE: in autonomous matched inverter with quasi-resonant inverter with quasi-resonant commutation comprising serial circuit connected to input terminals of inverter via accordingly magnetically connected throttles of filter (1, 2) and made on two pairs of serially connected controlled valves (3, 4 and 5, 6) with opposite diodes (7, 8 and 9, 10), shunted with the second serial circuit made on two capacitors of filter (11 12), common point of joining which is connected to common point of controlled valve pairs connection, output terminals of inverter are connected to common points of controlled valves connection of according pairs via dividing capacitors (13, 14), controlled valves are shunted by switching capacitors (15, 16 and 17, 18), load (19) is connected to output terminals of inverter. In method for control of autonomous matched inverter with quasi-resonant commutation, which consists in the fact that control pulses are generated and supplied in turns to valves that generate straight and reverse half-waves of AC in load, and they are alternately connected, time interval t is measured between start of passage and moment of instantaneous current achievement of maximum current level via controlled valves, the second time interval δ is set, equal to 0.3÷1.4 of duration of time interval τ, control pulses are removed, and controlled valves are disconnected as the second time interval δ expires, being counted from the moment of time interval t end, the third time interval 
is set, and control pulses to another controlled valves are generated and sent on completion of the third time interval 
counted from the moment of the second time interval δ end. In case of parallel compensation of load reactivity arranged in the form of parallel oscillating circuit connected via switching inductivity to output terminals of autonomous matched inverter, time interval t between start of passage and moment of instantaneous current achievement of maximum current level via controlled valves is measured by measurement of time interval between start of current passage through controlled valves and moment of instantaneous voltage achievement of instantaneous supply voltage on load at inlet terminals of inverter.
EFFECT: expanded area of application for autonomous matched inverter with quasi-resonant commutation and method for control of autonomous matched inverter with quasi-resonant commutation.
3 cl, 5 dwg
