Title :
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
fDate :
4/1/2007 12:00:00 AM
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;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2007.892103
