Series direct-current solid-state circuit breaker based on SiC MOSFET device and direct-current power distribution system

The invention belongs to the technical field of direct-current solid-state circuit breakers, and particularly provides a series-connection type direct-current solid-state circuit breaker based on a SiC MOSFET device and a direct-current power distribution system.The series-connection type direct-current solid-state circuit breaker comprises n stages of SiC MOSFET drive circuits, n is an integer larger than or equal to 2, and n is an integer and the on and off states of the SiC MOSFET device in the previous stage of SiC MOSFET driving circuit in the two adjacent SiC MOSFET driving circuits control the on and off states of the SiC MOSFET device in the next stage of SiC MOSFET driving circuit. The non-linear characteristic of the resistance value of the piezoresistor is utilized, and the piezoresistor is used for turning on and turning off a post-stage device when the resistance value is low; and when the resistance value is high, a branch is blocked, so that the problem of grid oscillation in an original single