Battery Charger
Hae-Gwang Jeong* and Kyo-Beum Lee†
Corresponding Author: Department of Electrical and Computer
Engineering, Ajou University, Suwon, Korea. (kyl@ajou.ac.kr)
* Dept. of Electrical and Computer Engineering, Ajou University,
Suwon, Korea. (lite88@ajou.ac.kr)
Received: May 27, 2013; Accepted: June 7, 2013
Abstract – This paper proposes the controller design for a stability improvement of an on-board
battery charger. The system is comprised of a power factor correction (PFC) circuit and phase shift
full-bridge DC-DC converter. The PFC circuit performs the control of the DC-link voltage and the
input power factor. The DC-DC converter regulates the voltage and the current in the battery using the
DC-link voltage. This paper proposes the design method of PI controller for the PFC circuit using a
small signal model. The analysis and design of a type-three controller for the DC-DC converter is also
presented. A simulation and experiment has been performed on the on-board battery charger and their
results are presented to verify the validity of the proposed system.
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