| 摘要 |
An inverter control device includes a phase current detection unit which is connected to a current sensor. The current sensor detects current flowing between a three-phase inverter which converts a DC voltage into AC three-phase voltages and a DC power supply which outputs the DC voltage, and the phase current detection unit detects phase current flowing in each phase of the inverter from a result of detection by the current sensor, so as to control the inverter on the basis of a result of detection by the phase current detection unit. The phase current detection unit includes an estimation block which estimates phase current of an intermediate voltage phase or current corresponding to the phase current of the intermediate voltage phase as a first estimated current, and estimates phase current of a maximum voltage phase or phase current of a minimum voltage phase using the first estimated current so that each phase current can be detected. |
