Comparative study of hysteretic controllers for single-phase voltage regulators

Author

Castilla, M. ; Guerrero, J.M. ; Matas, J. ; Miret, J. ; Sosa, J.

Author_Institution

Dept. of Electron. Eng., Univ. Politec. de Catalunya, Vilanova i la Geltru

Volume

1

Issue

1

fYear

2008

fDate

3/1/2008 12:00:00 AM

Firstpage

132

Lastpage

143

Abstract

A comparative study of hysteretic controllers for single-phase voltage regulators used in low-voltage applications is presented. The voltage-mode (VM) and current-mode (CM) control schemes considered here are designed with identical specifications. The regulator performance is evaluated in aspects such as load transient response, switching frequency design and component tolerance effects. Other aspects such as complexity and cost are also considered. Experimental results are reported in order to validate the theoretical predictions. Essentially the study demonstrates that: (1) both VM and CM controllers exhibit high performance for nominal power components, (2) the operation of the CM controller is extremely robust with respect to power-component tolerance and (3) the VM controller is a simple, low-cost control solution.

Keywords

hysteresis; low-power electronics; voltage regulators; comparative study; component tolerance effects; current mode control; hysteretic controllers; load transient response; low voltage applications; regulator performance; single phase voltage regulators; switching frequency design; voltage mode control;

fLanguage

English

Journal_Title

Power Electronics, IET

Publisher

iet

ISSN

1755-4535

Type

jour

DOI

10.1049/iet-pel:20070151

Filename

4475784