DocumentCode :
1814011
Title :
A novel delta-sigma modulated space vector modulation scheme using scalar delta-sigma modulators
Author :
Hirota, Atsushi ; Nagai, Satoshi ; Nakaoka, Mutsuo
Author_Institution :
Dept. of Electr. & Comput. Eng., Akashi Nat. Coll. of Technol., Hyogo, Japan
Volume :
2
fYear :
2003
fDate :
15-19 June 2003
Firstpage :
485
Abstract :
With advances of semiconductor switching power devices, operating frequency and power capacity of switching mode power converters are much improved. In these converters, pulse width modulation (PWM) technique is widely used, but by using this control scheme, large peak noise spectra appear with odd interval of carrier frequency. In AC motor drive system, space vector control scheme is used for high performance control system. But this control scheme is relatively complex, high performance processor such as DSP is needed for pulse pattern generation. In this paper, the authors propose a novel delta-sigma modulated space vector modulation scheme using scalar delta-sigma modulators. Proposed system configuration is very simple because only 2 scalar delta-sigma modulators are used. Furthermore, by the spread spectrum nature of delta-sigma modulator, noise level within unnecessary band is much reduced. As a results, simple configuration and low noise AC motor drive system are realized. From the simulation results, the authors confirmed that proposed system operates effectively as vector control system and noise level is much reduced.
Keywords :
AC motor drives; delta-sigma modulation; machine vector control; power convertors; AC motor drive system; PWM; carrier frequency; control scheme; delta-sigma modulated space vector modulation; high performance control system; low noise AC motor drive system; noise level reduction; odd interval; operating frequency; peak noise spectra; power capacity; pulse width modulation; scalar delta-sigma modulators; semiconductor switching power devices; space vector control; spread spectrum; switching mode power converters; vector control system; AC motors; Delta modulation; Frequency conversion; Machine vector control; Noise level; Power semiconductor switches; Pulse width modulation; Pulse width modulation converters; Semiconductor device noise; Switching converters;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics Specialist Conference, 2003. PESC '03. 2003 IEEE 34th Annual
ISSN :
0275-9306
Print_ISBN :
0-7803-7754-0
Type :
conf
DOI :
10.1109/PESC.2003.1218103
Filename :
1218103
Link To Document :
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