Title :
Delta Modulated Rectifier-Inverter for Uninterruptible Power Supplies
Author :
Rahman, M.A. ; Quaicoe, J.E. ; Esmail, A.R. ; Choudhury, M.A.
Author_Institution :
Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John´´s, Newfoundland, Canada AlB 3X5
Abstract :
Various PWM technique have been proposed so far for uniterruptible power supply (UPS) systems to obtain near distortionless output voltage as well as maintaining good input power factor and input current waveshape. The results of using delta modulation technique (DM) for modulating the gating signals of the rectifier and the inverter of a UPS system are presented in this paper. The DM technique of generating gating signals for converters provide the control of the rectifier voltage and also control of the dc to ac conversion at the inverter side. Analysis of rectifier and inverter performance for the DM pulse width modulation (PWM) operation of rectifier inverter is described and the results are verified experimentally.
Keywords :
AC generators; DC generators; Delta modulation; Power supplies; Pulse width modulation; Pulse width modulation inverters; Reactive power; Rectifiers; Uninterruptible power systems; Voltage control;
Conference_Titel :
Telecommunications Energy Conference, 1986. INTELEC '86. International
Conference_Location :
Toronto, Canada
Print_ISBN :
0-9692316-1-X
DOI :
10.1109/INTLEC.1986.4794465
