Jiangheng Lu received a B.E degree from Huazhong University of Science and Technology, China, in 2014. Currently, he is a PhD student in the Electrical and Computer Engineering department at University of Maryland, College Park. His research interest is PEV charger and power electronics. He is now working on AC/DC PFC topologies.
AC/DC PFC topologies
The common topology for PFC application is boost PFC. For the benefit of current ripple cancelation effect and smaller size of the component, the interleaved topology is introduced. Beyond that, if the inductors of two legs are directly coupled, even lower THD can be achieved with similar efficiency.
LLC/CLLC resonant DC/DC converters and Dual active full bridge DC/DC converters
These commonly used topologies provide high-efficiency DC/DC power conversion and the galvanic isolation as well. The resonant converter can adjust its DC gain by changing the operation frequency and DAB is most-likely operated with phase-shift control to manage the power output.