| 摘要 |
A power system for supplying direct current (DC) voltage to a load requiring same includes a main power supply outputting a first alternating current (AC) power, an auxiliary power supply outputting a first DC power directly, and a bidirectional power factor correction device. When the bidirectional power factor correction determines that the first DC power is more than a rate power of the load, the auxiliary power supply outputs only a first part of the first DC power to the load, and outputs a second part to the bidirectional power factor correction. The bidirectional power factor correction converts the second part into a second DC power, and redirects the second DC power into the main power supply. The first part of the first DC power output allowed into the load equals to the rated power of the load. |
