Abstract: For compensation of voltage drop in a multi-conductor cable (3) connecting an electric multi-phase power source (1) with a consumer installation (4), in particular for supply of ground power to aircraft standing in airport parking positions, adjustment of the output voltage of the electric power source (1) to a level above the nominal voltage is accomplished by determining a set of cable impedance parameters and vector representations of the fundamental components of the individual output currents of the phases of the multi-phase AC power. By matrix multiplication of the vector representations of the fundamental current components by the cable model matrix a set of vector representations of fundamental voltage drop signals is calculated for the phases of the multi-phase AC power, and used as reference signals for a voltage controller (13) in the power source (1) to produce for each phase a compensation voltage for addition to the nominal voltage.

Abstract: For compensation of voltage drop in a multi-conductor cable (3) connecting an electric multi-phase power source (1) with a consumer installation (4), in particular for supply of ground power to aircraft standing in airport parking positions, adjustment of the output voltage of the electric power source (1) to a level above the nominal voltage is accomplished by determining a set of cable impedance parameters and vector representations of the fundamental components of the individual output currents of the phases of the multi-phase AC power. By matrix multiplication of the vector representations of the fundamental current components by the cable model matrix a set of vector representations of fundamental voltage drop signals is calculated for the phases of the multi-phase AC power, and used as reference signals for a voltage controller (13) in the power source (1) to produce for each phase a compensation voltage for addition to the nominal voltage.