Electric-power conversion apparatus

An electric-power conversion apparatus comprising:

• an electric-power converter that performs conversion between DC electric power and AC electric power and is provided with two or more sets of series circuits in each of which a higher-potential-side switching device connected with a higher-potential-side DC electric wire where the DC electric power flows and a lower-potential-side switching device connected with a lower-potential-side DC electric wire where the DC electric power flows are connected in series with each other and a connection point between the higher-potential-side switching device and the lower-potential-side switching device is connected with an AC electric wire where the AC electric power flows;
• a switching controller that alternately turns on the higher-potential-side switching device and the lower-potential-side switching device in such a way as to sandwich a dead time, with regard to the series circuit for each of respective sets;
• and
• a dead time setter that sets the dead time,
• wherein with regard to the series circuit for each of the respective sets, the dead time setter obtains information on a value of a current that flows in the series circuit;
• with regard to an obtained current value, the dead time setter corrects a current error caused by a phase shift between a value of an actual current that flows in the series circuit at a time when the dead time is set and the obtained current value, and calculates a corrected current value;
• then, the dead time setter sets the dead time, based on the corrected current value.