Control of oscillations in PFC power supplies by Time Delay Feedback

Author

Aroudi, Abdelali El ; Orabi, Mohamed

Author_Institution

Dept. d´´Eng. Electron., Electr. i Autom., Univ. Rovira i Virgili, Tarragona, Spain

fYear

2009

fDate

10-12 Nov. 2009

Firstpage

1

Lastpage

8

Abstract

In this paper, time delay feedback control (TDFC) is applied to stabilize a two-stage power factor converter when it exhibits instabilities at the line period under traditional controllers. The TDFC introduces many advantages to the most and widely used average current mode (ACM) control through widening the stability domain of the PFC converter. A harmonic balance (HB) approach is used for studying the dynamics of the system under the new scheme of control and to obtain the stabilization domain. By appropriately selecting the time delay feedback gain and the time delay period, the system can be stabilized.

Keywords

delays; electric current control; oscillations; power factor correction; power system control; PFC power supplies; average current mode control; harmonic balance; oscillation control; power factor correction; stability domain; time delay feedback control; time delay feedback gain; two-stage power factor converter; Bridge circuits; Chaos; Control systems; DC-DC power converters; Delay effects; Output feedback; Power supplies; Reactive power; Stability; Voltage control; AC-DC; Boost PFC; Chaos; Harmonic Balance (HB); Instability; Subharmonics; Time Delay Feedback Control (TDFC);

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Power and Energy Conversion Systems, 2009. EPECS '09. International Conference on

Conference_Location

Sharjah

Print_ISBN

978-1-4244-5477-8

Type

conf

Filename

5415737