| 摘要 |
PROBLEM TO BE SOLVED: To provide a power conversion device that outputs power according to a designed command voltage of reduced harmonic PWM by compensating for harmonics of an output voltage due to the addition of a dead time caused inside the power conversion device.SOLUTION: A power conversion device 8 includes: power conversion means 1 for outputting AC power; current detection means 2 for detecting a current of the AC power; command voltage computation means 3 for computing an AC command voltage; switching phase storage means 4 storing switching phase patterns; switching phase output means 5 for reading out and outputting a switching phase pattern corresponding to the AC command voltage; current polarity discrimination means 6 for discriminating the polarity of the current; switching phase correction means 7a for correcting the switching phase pattern according to the current polarity; and switch changeover command means 7b for outputting a phase-corrected switching phase pattern to the power conversion means 1. |
