Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/13216
Title: A soft-switch back-to-back bi-directional DC-DC converter and the FPGA based digital control design
Authors: XU XINYU
Keywords: Soft switching, Bi-birectional DC-DC converter, FPGA, Digital control
Issue Date: 20-Apr-2008
Source: XU XINYU (2008-04-20). A soft-switch back-to-back bi-directional DC-DC converter and the FPGA based digital control design. ScholarBank@NUS Repository.
Abstract: In this thesis, a soft switching back-to-back bi-directional DC-DC converter is proposed, and an FPGA based digital control design for it is developed.The bi-directional DC-DC converter is able to handle the power flow in both directions, either from the high voltage side to the low voltage side (step-down mode), or from the low voltage side to the high voltage side (step-up mode). Hence it can be used to transfer power between two networks which have different voltages or different functions.The proposed bi-directional converter is operated with fixed duty ratio and phase shift control. Through analysis, a simple fist-order system is obtained for the converter. Using a digital PI controller, the close loop system achieves a satisfactory dynamic performance in both step-down and step-up mode operations. A 100 W prototype converter is built, and a maximum efficiency of 92.3% is measured in the experiment.
URI: http://scholarbank.nus.edu.sg/handle/10635/13216
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
PhDThesis_HT006946X.pdf4.04 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

416
checked on Dec 11, 2017

Download(s)

1,076
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.