METHOD TO LOCK AC RECTIFIER WITH DISTRIBUTED ENERGY ACCUMULATORS Russian patent published in 2014 - IPC H02H7/122 

FIELD: electricity.

SUBSTANCE: application: in the field of electrical engineering. Invention relates to the method to lock an AC rectifier (2) with distributed energy accumulators (C_SM) with at least two modules (4₁, 4₂, 4₃) of phases, which have appropriate upper and lower branches (P1, P2, P3, N1, N2, N3) of valves, which have appropriate multiple electrical serially connected bipolar submodules (SM1, SM2,…, SMn), which have an appropriate unipolar accumulating capacitor (C_SM), with which electrically in parallel the circuit of serial connection is connected, from two disconnected semiconductor switches (S1, S2) with an appropriate antiparallel connected diode (D1, D2). In accordance with the invention submodules (SM1, SM2,…, SMn) of upper and lower branches (P1, P2, P3, N1, N2, N3) of valves of the module (4₁, 4₂, 4₃) of the phase of the AC rectifier (2) are controlled in cascades in time for switching into a switching state III.

EFFECT: reduced voltage load.

5 cl, 4 dwg, 2 tbl