Cart (Loading....) | Create Account
Close category search window
 

Adaptive digitally controlled flyback converter based on current and phase margin estimation

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Youchen Yuan ; Coll. of Autom. & Electron. Eng, Qingdao Univ. of Sci. & Technol., Qingdao, China ; Zhiwei Shao

This paper introduces design and implementation of a digital controller for an experimental low-power flyback converter in a solar-powered system with power management. Multiple operating modes are used to maintain high efficiency over wide range of input voltage and load. A current, crossover frequency and phase margin estimation technique to perform load-dependent mode switching and control system stability is proposed and tested. An adaptive tuning digital PID regulator design example is described, with emphasis on practical limitations imposed by the LM3S1138 controller and the program of arithmetic due to sampling and processing. The MIMO loop adaptively adjusts the regulator parameters to minimize the error between the desired and estimated crossover frequency and phase margin. Small-signal models are derived, and the MIMO control loop is designed to achieve stability and performance over a wide range of operating conditions. Experimental results of demonstrating system functionality are presented for a flyback converter.

Published in:

Intelligent Control and Automation (WCICA), 2012 10th World Congress on

Date of Conference:

6-8 July 2012

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.