| 摘要 |
Provided are an output voltage control method and an output voltage control device for a direct-current power supply device, wherein an output voltage command value which compensates a voltage drop caused by wiring resistance is obtained and used to operate a backup unit such that a predetermined voltage required by a load can be output with high accuracy. An output voltage during operation of a power supply unit PSU0 used as a main power supply unit and a voltage drop caused by wiring resistance between a battery unit BBU7 used as a backup unit and an output point 50 are added to obtain an output voltage command value of the battery unit BBU7 in advance, and during a backup operation, the voltage of the output point 50 when the battery unit BBU7 is operated in accordance with the output voltage command is made equal to the voltage of the output point 50 when the power supply unit PSU0 is operated when an alternating-current power supply is in a sound state. |
