| 摘要 |
A power storage device includes an alternating current (AC) power source, a field effect transistor (FET), a capacitor bank, a direct current (DC) fixing heater, a step-down chopper circuit, and an output control unit. The FET switches between a first path and a second path to supply power from the AC power source in combination with a diode and an IGBT. The capacitor bank is arranged on the first path, and includes capacitor cells. The DC fixing heater is arranged on the second path. The step-down chopper circuit is arranged on the first path, and changes a voltage value of power supplied from the AC power source. The output control unit controls, when power is supplied to the first path, controls the step-down chopper circuit to change a voltage value based on a charging voltage of the capacitor cells.
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