Title :
Small-signal model and analysis of a multiple feedback control scheme for three-phase voltage-source UPS inverters
Author :
Abdel-Rahim, Naser ; Quaicoe, John E.
Author_Institution :
Fac. of Eng. & Appl. Sci., Memorial Univ. of Newfoundland, St. John´´s, Nfld., Canada
Abstract :
This paper presents a small-signal model and analysis of a current-controlled, voltage-regulated three-phase voltage-source inverter for uninterruptible power supplies (UPS). Using perturbation and small-signal analysis techniques, linear steady-state and dynamic models of the UPS system in the rotating frame of reference are derived. The small-signal model is used to study the effects of various feedback variables on the dynamic performance of the UPS system. Experimental results are provided to validate the analytical models
Keywords :
DC-AC power convertors; PWM invertors; circuit analysis computing; dynamic response; harmonic distortion; power engineering computing; power system harmonics; switching circuits; uninterruptible power supplies; UPS; dynamic models; dynamic performance; feedback variables; linear steady-state models; perturbation; rotating reference frame; small-signal analysis; small-signal model; three-phase VSI; uninterruptible power supplies; Circuits; Control systems; Feedback control; Filters; Low voltage; Power system modeling; Pulse width modulation; Pulse width modulation inverters; Uninterruptible power systems; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1996. PESC '96 Record., 27th Annual IEEE
Conference_Location :
Baveno
Print_ISBN :
0-7803-3500-7
DOI :
10.1109/PESC.1996.548580
