Fault Handling Methods and Comparison for Different DC Breaker Topologies and MMC Topologies of the HVDC System

Figure 6

Structure and working process of FBSM. (a) Structure of FBSM. (b) FBSM is inserted. (c) FBSM is bypassed. (d) All IGBTs are blocked.

(a)

(b)

(c)

(d)