CONTROL MODES FOR RESONANT DC CONVERTER Russian patent published in 2017 - IPC H02M3/335 H02M3/338 H05G1/12 

FIELD: electricity.

SUBSTANCE: power converter (16) comprises an inverter (18) with semiconductor switches (S1, S2, S3, S4), a resonant circuit (22) connected to the inverter (18) and a controller (30) for switching semiconductor switches (S1, S2, S3, S4) of the inverter (18) to the switching states. The controller (30) is configured to periodically switch the inverter (18) between the switching states in such a way that a periodic resonant current i_res in the resonant circuit (22) for synchronizing switching events of switching states with a periodic resonance current i_res, so that the switching state is applied to the inverter at a time point associated with a particular periodic point (52) of the periodic resonant current i_res, and for applying the switching states in such a way that the total power in the reverse direction from the resonant circuit (22) to the input (12) of the inverter (18) is balanced with the total forward power from the inverter input (12) to the resonant circuit (22).

EFFECT: increasing the output power range.

9 cl, 9 dwg