| 摘要 |
<p>A power supply apparatus (10) includes one first power device (30) and a plurality of second power devices (41, 42, and 43). The power supply apparatus is configured to operate simultaneously the first power device (30) and the plurality of the second power devices (41, 42, and 43) to supply a DC power therefrom to a load device (92). The first power device (30) has its output voltage of a DC voltage kept constant irrespective of a magnitude of an output current of the first power device (30). The second power devices (41, 42 and 43) have its output voltage of a DC voltage which decreases monotonically as an output current of the second power devices (41, 42, and 43) increases, respectively. The second power devices (41, 42, and 43) include an adjustment unit configure to adjust the output current in accordance with an instruction value for prescribing a magnitude of the output current. The adjustment unit is configured to, upon receiving the instruction value, modify the output current-output voltage characteristics of the second power device under a condition where the output voltage of the second power device decreases monotonically as the output current of the second power device increases, thereby adjusting the output current of the second power device to a current corresponding to the received instruction value as well as adjusting the output voltage of the second power device corresponding to the adjusted output current of the second power device to the output voltage of the second power device corresponding to the unadjusted output current of the second power device.</p> |
