Ramdan Razali  , Zulkeflee Khalidan  , M. Badaruddin  , M.S. Najib  , 
    A Novel Online Dual Slope Delta Modulated PWM Inverter,
    International Journal of Electrical and Power Engineering,
    Volume 3,Issue 2,
    2009,
    Pages 94-98,
    ISSN 1990-7958,
    ijepe.2009.94.98,
    (https://makhillpublications.co/view-article.php?doi=ijepe.2009.94.98)
    Abstract: This study attempts to identify the modulation parameters of a Delta modulator. A novel technique of implementing the Delta modulator by a microcomputer Delta Modulators can be significantly reduced by allowing online parameter variation and synchronous operation, which can be varied during constant and variable frequency operation of the three-phase Voltage Source Inverter (VSI) so as to improve the performance in terms of harmonic content and fundamental voltage availability. Test results show that dual-slope and dual slope-variable window width operations provide considerably higher fundamental voltage while maintaining the spectra of dominant harmonics to occur at higher frequency range.
    Keywords: Delta modulator;harmonic content;jundamental voltage;spectra;parameter;VSI