DC VOLTAGE INTO THREE-PHASE AC VOLTAGE CONVERTER Russian patent published in 2024 - IPC H02M7/53 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used in self-contained power supply systems for converting DC voltage into three-phase AC voltage. L-shaped LC-filter 2 and converter control unit 4 are used, which implements PWM and stabilization of output voltage by inverter. Converter comprises a power circuit of bridge inverter 1, comprising input capacitor 5 connected to a direct current source U_S, bipolar transistors 6-9 and shunting diodes 10-13, output L-shaped LC filter 2, transformer with rotating magnetic field 3, comprising first and second primary windings 23 and 24, respectively, phase-shifting capacitor 14, secondary windings 25-27. Drawing shows outputs for connecting a DC voltage source U_S and outputs A, B and C for connecting a load, control unit 4, comprising pulse amplifiers 15 and 20, logical elements AND 16 and 21, voltage polarity sensor 18, sawtooth voltage generator 17, pulse former 19 and transformer-rectifier unit 22.

EFFECT: high quality of the output voltage of the converter at the output of the single-phase bridge circuit of the inverter.

1 cl, 2 dwg