DocumentCode :
2628844
Title :
Common mode voltage in a motor drive system with PFC
Author :
Zare, Firuz ; Adabi, Jafar ; Nami, Alireza ; Ghosh, Arindam
Author_Institution :
Queensland Univ. of Technol., Brisbane, QLD, Australia
fYear :
2010
fDate :
6-8 Sept. 2010
Abstract :
Common mode voltage generated by a power converter in combination with parasitic capacitive couplings is a potential source of shaft voltage in an AC motor drive system. In this paper, a three-phase motor drive system supplied with a single-phase AC-DC diode rectifier is investigated in order to reduce shaft voltage in a three-phase AC motor drive system. In this topology, the common mode voltage generated by the inverter is influenced by the AC-DC diode rectifier because the placement of the neutral point is changing in different rectifier circuit states. A pulse width modulation technique is presented by a proper placement of the zero vectors to reduce the common mode voltage level, which leads to a cost effective shaft voltage reduction technique without load current distortion, while keeping the switching frequency constant. Analysis and simulations have been presented to investigate the proposed method.
Keywords :
AC motor drives; AC-DC power convertors; PWM invertors; PWM rectifiers; common mode voltage; inverter; parasitic capacitive couplings; power converter; pulse width modulation technique; shaft voltage reduction technique; single-phase AC-DC diode rectifier; three-phase AC motor drive system; zero vectors; AC motors; Inverters; Leg; Rectifiers; Shafts; Switches; Variable speed drives; Adjustable speed drive; Common mode voltage; Space vector modulation; diode rectifier; shaft voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics and Motion Control Conference (EPE/PEMC), 2010 14th International
Conference_Location :
Ohrid
Print_ISBN :
978-1-4244-7856-9
Type :
conf
DOI :
10.1109/EPEPEMC.2010.5606609
Filename :
5606609
Link To Document :
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