Generalized Feedforward Control of Single-Phase PWM Rectifiers Using Disturbance Observers

Author

Ghosh, Rajesh ; Narayanan, G.

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Sci., Bangalore

Volume

54

Issue

2

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

984

Lastpage

993

Abstract

This paper presents a generalized feedforward control scheme for a single-phase boost rectifier, operating with indirect current control, to improve the dynamic response of its output voltage against line and load disturbances, as well as for changes in the reference voltage. Digital implementation of the control method is discussed. A small-signal model of the converter system is presented. The stability of the current loop at light loads is studied. A method is presented to estimate the input voltage and the load current without having to actually measure these quantities for the purpose of feedforward control. Simulation and experimental results are presented

Keywords

PWM rectifiers; digital control; dynamic response; electric current control; feedforward; observers; stability; current loop stability; digital control; disturbance observers; dynamic response; generalized feedforward control; indirect current control; input voltage estimation; single-phase boost PWM rectifiers; small-signal model; Bandwidth; Current control; Information filtering; Information filters; Power harmonic filters; Pulse width modulation; Rectifiers; Stability; Steady-state; Voltage control; AC–DC power conversion; boost rectifier; current control; digital control; feedforward systems; observers;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2007.892103

Filename

4135418