Title :
Comparative study of asynchronous and synchronous discrete delta modulation schemes for DC-AC power conversion
Author :
Sathiakumar, S. ; Pasalic, F. ; Hui, S.Y.R.
Author_Institution :
Dept. of Electr. Eng., Sydney Univ., NSW, Australia
Abstract :
This paper presents a comparative study on the performance of two discrete delta modulation (DDM) schemes for DC-AC power conversion, namely the asynchronous (ADDM) scheme and the synchronous (SDDM) scheme. The ADDM scheme operates with asynchronous switching frequency and generates harmonics that spread over a wide range of frequency. The SDDM scheme operates with constant switching frequency and generates harmonics at well defined frequencies that correspond to the switching frequency and its multiples. Both schemes have been implemented successfully in a TMS320C25 processor. Experimental and computed results are presented. The advantages and disadvantages of both schemes are discussed
Keywords :
DC-AC power convertors; PWM power convertors; circuit testing; delta modulation; network analysis; power system harmonics; switching circuits; DC-AC power conversion; TMS320C25 processor; asynchronous modulation; discrete delta modulation schemes for; harmonics; switching frequency; synchronous modulation; Communication system control; Control systems; Delta modulation; Distributed decision making; Hysteresis; Microprocessors; Power conversion; Pulse width modulation inverters; Switching frequency; Uninterruptible power systems;
Conference_Titel :
Power Electronics Specialists Conference, 1995. PESC '95 Record., 26th Annual IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-2730-6
DOI :
10.1109/PESC.1995.474833
