LQG controller for asymmetrical half-bridge converter with range winding

Author

Park, J.H. ; Zolghadri, M.R. ; Kimiaghalam, B. ; Homaifar, A. ; Lee, F.C.

Author_Institution

Dept. of Electr. & Comput. Eng., North Carolina A&T State Univ., Greensboro, NC, USA

Volume

2

fYear

2004

fDate

4-7 May 2004

Firstpage

1261

Abstract

Asymmetric half-bridge converters are widely used as the front-end DC-DC converter in distributed power systems. Added range windings are proposed to increase the efficiency of these converters. Activating and deactivating these windings produce transient effect in the output voltage. In this study, an optimal controller based on the linear quadratic Gaussian (LQG) method is designed for the efficient regulation of the output voltage of an asymmetric half-bridge controller. The intent of implementing LQG control is to minimize the output voltage transient produced by range switch operation due to input voltage variations. Simulation results are presented to compare the performance of the new LQG based controller with that of a conventional controller.

Keywords

DC-DC power convertors; bridge circuits; control system analysis; distributed power generation; linear quadratic Gaussian control; power system control; voltage control; LQG controller; asymmetrical half-bridge converter; distributed power systems; front-end DC-DC converter; linear quadratic Gaussian method; optimal controller; output voltage regulation; output voltage transient minimization; range windings; Aerospace industry; DC-DC power converters; Industrial power systems; Power system simulation; Power system transients; Rectifiers; Stress; Switches; Telecommunication control; Voltage control; Asymmetric half-Bridge Converter; Current doubler rectifier; LQG Controller;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 2004 IEEE International Symposium on

Print_ISBN

0-7803-8304-4

Type

conf

DOI

10.1109/ISIE.2004.1571994

Filename

1571994