METHOD FOR CONTROLLING SINGLE-PHASE VOLTAGE INVERTER AND SINGLE-PHASE VOLTAGE INVERTER CONTROLLED BY USING THIS METHOD

摘要

FIELD: electrical engineering; static direct-to-alternating current converters with isolating transformers.;SUBSTANCE: according to proposed method load-current amplitude of desired value and admissible load-current deviation value are entered in single-phase inverter controlled by using this method; desired instant load current is evaluated, and respective load poles are connected to positive or negative bus of DC current supply depending on sum or difference of desired current and admissible deviation at respective positive or negative polarity of load voltage for time period until load current is brought to sum or difference of mentioned currents, respectively. Single-phase voltage inverter has power supply, four series-connected capacitors, two series-connected groups of transistor modules, each having transistor with diode connected in parallel opposition, isolating transformers, and load.;EFFECT: enlarged functional capabilities due to reduction of pulse current carried by isolating transformers.;2 cl, 4 dwg