In a power control device for a vehicle, a monitoring control device 2 disposed separately from a power converter 1 judges normality/abnormality of the power converter 1, and sets an abnormality-occurrence electric generation switching signal 4 to ON/OFF, whereby a first electric generation control function corresponding to an output of power element driving signal generating means is forcedly stopped, and also a second electric generation control function based on a diode rectifying mode of a power element is started.
