CONTROL DEVICE FOR POWER CONVERTER AND FUEL CELL SYSTEM

In a control device for a power converter converting electric power of a fuel cell stack, the power converter includes first and second reactors, a first switching element connected to the first reactor, and a second switching element connected to the second reactor. The second reactor is located closer to a cooling water discharge manifold than the first reactor. The control device configured to: set first and second duty cycles of the first and second switching element; and execute limit control in which, by controlling the setting of the first and second duty cycles, a second amount of heat generated by the second reactor due to a second current is limited to a value smaller than a first amount of heat generated by the first reactor due to a first current within a period of at least multiple ON-OFF cycles of the first and second switching elements.