Fig. 3
From: Improved COT control strategy for CRM Boost-PFC circuits applied to marine integrated power systems
The operating mode of proposed circuit in one switching cycle, (a) Mode 1[t1 ≤ t < t2]; (b) Mode 2[t2 ≤ t < t3]; (c) Mode 3[t3 ≤ t < t5]; (d) Mode 4[t5 ≤ t < t6].
