Title :
Fast controller for a unity-power-factor PWM rectifier
Author :
Eissa, Mohamed O. ; Leeb, Steven B. ; Verghese, George C. ; Stankovic, Aleksandar M.
Author_Institution :
Lab. for Electromagn. & Electron. Syst., MIT, Cambridge, MA, USA
fDate :
1/1/1996 12:00:00 AM
Abstract :
This paper presents an analog implementation of a fast controller for a unity-power-factor (UPF) PWM rectifier. The best settling times of many popular controllers for this type of power converter are on the order of a few line cycles, corresponding to bandwidths under 20 Hz. The fast controller demonstrated in this paper can exercise control action at a rate comparable to the switching frequency rather than the line frequency. In order to accomplish this while maintaining unity power factor during steady-state operation, the fast controller employs a ripple-feedback cancellation scheme
Keywords :
AC-DC power convertors; PWM power convertors; control system analysis; control system synthesis; feedback; power factor; power system harmonics; rectifying circuits; switching circuits; voltage control; PWM rectifier; bandwidth; control design; control modelling; power converter; ripple-feedback cancellation scheme; steady-state operation; switching frequency; unity power factor; voltage controller; Analog-digital conversion; Bandwidth; Capacitors; Power supplies; Pulse width modulation; Reactive power; Rectifiers; Steady-state; Switching frequency; Voltage control;
Journal_Title :
Power Electronics, IEEE Transactions on
