The power converter includes a first operation mode in which each of switching elements is controlled on or off independently so as to perform a power conversion between a load and both a first DC power source and a second DC power source and a second operation mode in which every two of the switching elements are controlled on or off concurrently so as to perform the power conversion between the load and the first DC power source or the second DC power source. A switching speed at which when each of the switching elements is turned on or turned off is controlled in accordance with the operation mode. Specifically, the switching speed in the second operation mode is higher than the switching speed in the first operation mode.