| 摘要 |
PURPOSE:To suppress unbalanced current between three-phase windings, in a system which controls a multiphase AC motor with a plurality of inverters. CONSTITUTION:Inverters 1A and 1B are connected to two sets of three-phase windings of a motor 2. Current adjusters 17A and 17B create voltage command signals Vd* and Vg*, respectively, from a representative excitation current command signal Id* and a torque current command signal Iq* and a representative excitation current signal Id and a torque current signal Iq. Current adjusters 30 and 31 create voltage command correction signal Vd* and Vq* from excitation current signals IdA and IdB and torque current signals IqA and IqB and a reference command signal I0*. Adders 40 and 41 and subtracters 42 and 43 create two sets of voltage command signals VdA** and VqA**, and VdB** and VqB** from the voltage command signal and the voltage command correction signal. Coordinate converters 15A and 15B converts two sets of voltage command signals into three-phase AC output voltage commands VUA**, VVA**, VWA**, VUB**, VVB**, and VWB**, respectively, and output them to inverters 1A and 1B. |
