SOURCE OF SINUSOIDAL VOLTAGE Russian patent published in 2017 - IPC H02M7/497 

FIELD: electricity.

SUBSTANCE: source comprises a functionally included battery, the DC bus, inverter, three-phase filter containing the LC-circuits and terminals for connecting the load. Three-phase filter comprises a three phase filter made for identical patterns. Each phase filter comprises a matching transformer, the primary winding of which is included between the output of the inverter and the plug to connect the load and the secondary winding is connected to the LC-circuits, designed for frequencies of 250 Hz, 350 Hz, 550 Hz, 650 Hz, 850 Hz, 950 Hz , 1150 Hz, 1250 Hz, 1450 Hz, 1550 Hz, 1750 Hz, 1850 Hz. One terminal of said winding is connected to the junction of capacitor and coil of the first LC-circuit inductance and the other output - to the point of connection of the capacitor and inductor twelfth LC-circuit. Each LC-circuit comprises a throttle adapted for transformer circuit. The secondary windings of each of the inductors of each phase filters connected in series to each other, forming a coherent phase circuit connected to the phase input rectifier, whose output is connected to the DC buses. These phases are connected in parallel circuit. The required technical result is achieved by using the number of LC-circuits corresponding to the number of higher harmonics with a smaller number of rectifiers in each phase. The energy of the higher harmonics is returned as a rectified voltage for battery charging.

EFFECT: improved stability of the output voltage phase.

2 dwg, 2 tbl