| 摘要 |
PROBLEM TO BE SOLVED: To adequately compensate for an output voltage error, based on a short circuit preventing period. SOLUTION: This inverter apparatus comprises an analog/digital converter 16 for converting an output current detected with a current detector 4 to a digital value and a phase positive/negative compensation calculating part 17 for generating compensation amount of a positive/negative first error voltage of each phase based on the digital value converted with the analog/digital converter. As a result, a voltage compensating means 13a multiplies the first error voltage with a positive/negative compensation amount of each phase generated in the phase positive/negative compensation calculating part 17 to obtain the second error voltage and also compensates for the voltage command value calculated in an output frequency/voltage calculation means 11 depending on the polarity of an output current. |
