Title :
A critical evaluation of the DC link current with different DPM schemes-a comparative study
Author :
Deshpande, Vijay ; Doradla, S.R.
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol., Kanpur, India
Abstract :
A line voltage referenced sigma delta modulation (LVRSDM) scheme is proposed for resonant link inverters. The formulation of the decoding table and choice of freewheeling vector are discussed in detail. A comparative study of three different discrete pulse modulation schemes based on the DC link current performance is presented. Typical waveforms from the laboratory-sized experimental setup incorporating LVRSDM are given. The proposed scheme is found to be superior than other commonly used discrete pulse modulation schemes. The study reveals that LVRSDM scheme reduces losses and provides improved performance. This scheme is well suited for all resonant link type inverters
Keywords :
DC-AC power convertors; invertors; losses; resonant power convertors; sigma-delta modulation; switching circuits; DC link current; decoding table; discrete pulse modulation schemes; freewheeling vector; line voltage referenced sigma delta modulation; losses reduction; resonant link inverters; soft switching; Acoustic noise; Delta modulation; Delta-sigma modulation; Frequency; Pulse modulation; Pulse width modulation; Pulse width modulation inverters; Resonance; Switching circuits; Voltage;
Conference_Titel :
Power Electronics, Drives and Energy Systems for Industrial Growth, 1996., Proceedings of the 1996 International Conference on
Conference_Location :
New Delhi
Print_ISBN :
0-7803-2795-0
DOI :
10.1109/PEDES.1996.539639
