| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem of a conventional AC power supply device such that the rate of inverse load flow of generation power caused by renewable energy sources is small.SOLUTION: In one aspect of the output power method of an AC power supply device, the voltage of discharge power Pbat supplied from a power storage section BAT is converted and a first DC power signal is output while the voltage of the first DC voltage signal is controlled so that the bus voltage Vdc of a DC bus wiring 15 into which the first DC voltage signal is output is made to approach a preset bus voltage command value, the first DC power signal and a second DC power signal supplied from a renewable energy source are compounded in the DC bus wiring 15, output power Pinv is calculated obtained by adding the discharge power Pbat to power Ppl of the second DC power signal based on difference between load power Ppl and the discharge power Pbat, and an AC power signal is output while power of the AC power signal is controlled so that power of the AC power signal output to system wiring becomes the output power Pinv.SELECTED DRAWING: Figure 1 |
