METHOD OF ADJUSTMENT OF CONSTANT VOLTAGE OF RECTIFIER Russian patent published in 2003 - IPC

FIELD: electrical engineering, systems controlling A C motor drives. SUBSTANCE: in agreement with method of adjustment of constant voltage constant voltage (U_d) of rectifier which is connected on side of alternating voltage to first secondary winding of network transformer is adjusted with the aid of controlled valves of four- quadrant adjusting element of rectifier. Controlling voltage (U_st) to adjust these controlled valves is set by means of voltage regulator with current regulator in system of subordinate control. Controlling voltage U_st1 is formed in correspondence with formula U_st1 = U_N-ΔU-U_M where ΔU is controllable value of current regulator and voltage (U_M) of transformer model is formed in accordance with formula where R_m or L_m are actualized mean values of active resistance R or inductance L of transformer; i_1pw is regulated value of voltage regulator in voltage regulation network; i_Sqw is specified rated value of current for amplitude of imaginary component of summary current of transformer; ω is circular frequency of network voltage (U_N) and t is time. EFFECT: simplified dynamic adjustment of rectifier. 3 cl, 6 dwg