| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power conversion apparatus capable of acquiring a full-wave voltage waveform having a small waveform distortion as desired at both ends of a capacitor even when capacitance of the capacitor decreases. <P>SOLUTION: A step-up/step-down converter 14 is controlled by reflecting a correction duty k×Δic corresponding to a deviation Δic (Δic=iccom-ic) between capacitor current ic flowing in a capacitor 28 and capacitor current command value iccom respectively for a step-up duty (Vcom/Vin) and a step-down duty (1-Vin/Vcom) based on an output voltage correction command value Vcom (Vcom=Vmcom+ΔVn or Vcom=A×Vmcom) to acquire a full-wave voltage waveform Vm having a small waveform distortion as desired at both ends of the capacitor 28 even when capacitance of the capacitor 28 decreases. <P>COPYRIGHT: (C)2012,JPO&INPIT |
