METHOD TO CONTROL FREQUENCY CONVERTER WITH PRONOUNCED DC LINK Russian patent published in 2009 - IPC H02M5/451 

FIELD: electrical engineering.

SUBSTANCE: method to control frequency converter with pronounced DC link consists in setting minimum current of I_d filter throttle, measuring instantaneous currents of filter I_d throttle of controlled gate and instantaneous voltage at the output of rectifier u_D and controlled gate u_v. It comprises also generating and sending control signal to controlled gate at the moment, equality u_D=fL_D(l_D-i_D)+u_v is satisfied, picking up control signals from controlled gate at oscillating drop of instantaneous current flowing through controlled gate to zero level.

EFFECT: higher reliability.

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