METHOD FOR DIRECT CONVERTER CONTROL AND DEVICE FOR REALISATION OF THIS METHOD Russian patent published in 2015 - IPC H02M7/483 H02M7/493 H02M1/14 

FIELD: electricity.

SUBSTANCE: invention relates to electrical engineering and can be used in direct converters. In the direct converter control method power semiconductor keys of switch cabins (2) of the respective phase module (1) are controlled by control signal (S1). For each phase module (1) the control signal (S1) is generated on the basis of difference between the reference signal (V_ref,UR, V_ref,US, V_ref,UT, V_ref,VR, V_ref,VS, V_ref,VT, V_ref,WR, V_ref,WS, V_ref,WT) in regards to voltage (U_UR, U_US, U_UT; U_VR, U_VS, U_VT; U_WR, U_WS, U_WT) at the phase module (1) and voltage signal (V_LUR, V_LUS, V_LUT, V_LVR, V_LVS, V_LVT, V_LWR, V_LWS, V_LWT) at inductance coil (L_UR, L_US, L_UT, L_VR, L_VS, L_VT, L_WR, L_WS, L_WT), which is generated from the reference signal (V_ref,UR, V_ref,US, V_ref.UT, V_ref,VR, V_ref.VS, V_ref,VT, V_ref,WR, V_ref,WS, V_ref,WT) in regards to current (i_UR, i_US, i_UT; i_VR, i_VS, i_VT; i_WR, i_WS, i_WT) through the phase module (1); it is generated from the average value $$\left({\overline{P}}_U,{\overline{P}}_V,{\overline{P}}_W\right)$$ or instantaneous value (P_U, P_V, P_W) of the phase power (U, V, W) in the first current system or voltage system connected to the phase module (1), from the average value $$\left({\overline{P}}_R,{\overline{P}}_S,{\overline{P}}_T\right)$$ or instantaneous value (P_R, P_S, P_T) of the phase power (R, S, T) of the second current system or voltage system connected to the phase module (1), from the sum of instantaneous values (P_UVW) or average values (P_UVWM) of the phases (U, V, W) power in the first current system or voltage system and from the sum of instantaneous values (P_RST) or average values (P_RSTM) of the phases (R, S, T) power in the second current system or voltage system. Additionally invention claims device for method implementation.

EFFECT: reduction of undesirable energy fluctuations at phase modules.

8 cl, 2 dwg