The present invention describes a power converting apparatus that converts a level of DC power from the solar cell module 100 through the converter 530 and then converts AC power through the inverter 540.

Meanwhile, the present invention proposes a method in which a power converting apparatus including an unfolding inverter controls a power factor.

To this end, the power converting apparatus 500 and the photovoltaic module 50 including the same according to an embodiment of the present invention include: a converter 530 for converting a level of input DC power; an inverter 540 for converting a half sine wave voltage from the converter 530 into an AC voltage; and a controller 550 for controlling the converter 530 and the inverter 540 based on an output current and an output voltage of the inverter 540, wherein a plurality of switching elements in the inverter 540 is respectively turned on once in each cycle, and wherein the controller 550 controls, based on a difference between a grid voltage Vacr and an output current of the inverter 540, a bidirectional current to flow to the converter 530. Accordingly, the power converting apparatus 500 including the unfolding inverter is capable of controlling a power factor. As a result, it is possible to output AC power stably in connection with the grid.