INSTANTANEOUS VOLTAGE-DROP COMPENSATION CIRCUIT, POWER CONVERSION APPARATUS, INSTANTANEOUS VOLTAGE-DROP COMPENSATION METHOD AND COMPUTER READABLE MEDIUM STORING INSTANTANEOUS VOLTAGE-DROP COMPENSATION PROGRAM

摘要

will by the conversion of AC input power to conduct its own voltage sag compensation. ; power converter (4) 3 to detect the phase voltage three-phase voltage detecting means for generating a voltage signal input to the (10), a third three-phase two-phase conversion means for converting the voltage signal into a two-phase voltage signals ( 12), a power current detecting means for generating a three-phase voltage signal to detect a current input to the three-phase 13 and the converter 4, three-phase current signals to the three-phase two-phase conversion of converting a two-phase current signal means 14 and subtraction means for generating a first difference signal of the input current command signal and the two-phase current signal 27 and an input current control means for generating an input current control signal based on the first difference signal 28 and, the two-phase adding means for adding to the voltage signal input current control signal (29), a second phase of converting the summed input signal to the three-phase current control signal control the three-phase conversion means 30 and a third Based on the control signal, and a control pulse signal generation means 34 for generating and outputting a control pulse signal of the power converter (4).