| 摘要 |
The present invention is to provide a power supply apparatus to smoothly supply power to a driving device and the like to operate the driving device even when an abnormality occurs on a power source side. The power supply apparatus comprises: multiple drive modules, each of which includes a first power conversion module connected to a power source unit, a second power conversion module connected to a driving unit, a direct current connection portion connecting the first power conversion module to the second power conversion module; at least one switch unit which connects the direct current connection portions of the drive modules to each other to facilitate opening and closing; and a control unit which opens and closes the switch unit, wherein the control unit closes, when at least one of voltage values input to the first power conversion module included in each of the drive modules is less than a reference value, the switch unit to share the current connection portions are in parallel to each other, and opens, when all the voltage values are equal to or more than the reference value, the switch unit to separate the direct current portions from each other. |
