Title :
A single-phase delta-modulated inverter for UPS applications
Author :
Abdel-Rahim, Naser ; Quaicoe, John E.
Author_Institution :
Memorial Univ. of Newfoundland, St. John´´s, Nfld., Canada
fDate :
6/1/1993 12:00:00 AM
Abstract :
The performance characteristics of the rectangular wave delta modulation (RWDM) scheme for uninterruptible power supply (UPS) applications is investigated. Normalized characteristic curves that show the effect of various modulator parameters on the frequency spectrum of the inverter output voltage are obtained using discrete Fourier transform (DFT) and harmonic analysis techniques. The performance of a single-phase half-bridge inverter with an LC filter is discussed, and experimental results are provided to validate the predicted and simulated results. It is shown that the harmonic content of the inverter output waveform can be controlled through the control of the modulator parameters
Keywords :
delta modulation; fast Fourier transforms; harmonics; invertors; uninterruptible power supplies; LC filter; UPS applications; discrete Fourier transform; frequency spectrum; harmonic analysis; harmonic content; inverter; output voltage; performance characteristics; rectangular wave delta modulation; single-phase; uninterruptible power supply; Circuits; Cutoff frequency; Delta modulation; Discrete Fourier transforms; Harmonic analysis; Power harmonic filters; Pulse width modulation; Pulse width modulation inverters; Uninterruptible power systems; Voltage control;
Journal_Title :
Industrial Electronics, IEEE Transactions on
