Two-loop sensorless control of flyback converter using Unscented Kalman Filter

Author

Zakipour, A. ; Salimi, Mahdi

Author_Institution

Dept. of Electr. Eng., Islamic Azad Univ., Sarab, Iran

fYear

2012

fDate

3-5 Oct. 2012

Firstpage

446

Lastpage

451

Abstract

In this paper, a two-loop controller for flyback DC-DC converter is developed in Continuous Conduction Mode (CCM) using Unscented Kalman Filter (UKF). In the proposed method, magnetizing inductor current and load resistance are estimated and as a result from practical viewpoint, current sensor can be eliminated. Due to non-minimum phase nature of the converter, both inductor current and output voltage feedback loops are used to stabilize the system in wide operating range. Response of the designed controller to load and output voltage reference changes are evaluated. Simulation results are obtained using Matlab/Simulink software.

Keywords

DC-DC power convertors; Kalman filters; control system synthesis; electric current; electric potential; electric resistance; feedback; inductors; nonlinear filters; stability; CCM; Matlab/Simulink software; UKF; continuous conduction mode; flyback DC-DC converter; load resistance estimation; magnetizing inductor current estimation; nonminimum phase converter; output voltage feedback loops; system stabilization; two-loop sensorless control; unscented Kalman filter; Estimation; Inductors; Kalman filters; Mathematical model; Resistance; Switches; Voltage control; Kalman Filter; load and reference changes in wide range; magnetizing inductor current estimation; non-minimum phase nature; two-loop control;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT), 2012 4th International Congress on

Conference_Location

St. Petersburg

ISSN

2157-0221

Print_ISBN

978-1-4673-2016-0

Type

conf

DOI

10.1109/ICUMT.2012.6459708

Filename

6459708