Title
On load adaptive control of voltage regulators for power managed loads: Control schemes to improve converter efficiency and performance
Abbreviated Journal Title
IEEE Trans. Power Electron.
Keywords
adaptive; control; converter; dc-dc; dynamic response; efficiency; light; load; performance; power management; ripple; voltage regulator (VR); Engineering, Electrical & Electronic
Abstract
Voltage regulator (VR) efficiency improvement especially at light load currents is important in many applications including those that are battery powered and have energy consumption constrains. However, controlled steady-state and dynamic performance should be maintained while improving efficiency. In this paper, an analytical study of VR losses and voltage ripple deviation is presented and discussed, yielding to proposed control technique, namely "pulse sliding" (PSL) control technique, which results in improved VR conversion efficiency with low and controlled voltage ripple and improved dynamic response. The proposed method and controller achieves the advantages of both variable frequency and fixed frequency controls and eliminates their disadvantages by utilizing information obtained from the inductor peak current, compensation error signal and capacitor current, resulting in an optimum nonlinear switching frequency modulation. PSL is compared to other control methods by both analysis and experiments. Experimental results highly agree with theoretical analysis.
Journal Title
Ieee Transactions on Power Electronics
Volume
22
Issue/Number
5
Publication Date
1-1-2007
Document Type
Article
Language
English
First Page
1806
Last Page
1819
WOS Identifier
ISSN
0885-8993
Recommended Citation
"On load adaptive control of voltage regulators for power managed loads: Control schemes to improve converter efficiency and performance" (2007). Faculty Bibliography 2000s. 6794.
https://stars.library.ucf.edu/facultybib2000/6794
Comments
Authors: contact us about adding a copy of your work at STARS@ucf.edu