POWER COMMUTATION SWITCH Russian patent published in 2013 - IPC H02M1/06 

FIELD: electricity.

SUBSTANCE: device contains a key (1) with inductor (2) connected in parallel, one output of the inductor forms the first power lead (5) of the commentator switch; at that capacitor (3) in connected in parallel to the switch (1) and an auxiliary inductor (4) is connected in series with its free output forming the second power lead (6) of the commentator switch.

EFFECT: smooth current variation in the commutation circuit and closure of the major converter keys at zero current that makes possible reduction of dynamic losses in power commutator switches of pulse-type regulators, inverters and active front ends.

2 cl, 25 dwg