NDLI: Three-phase multi-module VSIs using SHE-PWM with reduced zero-sequence circulating current

Content Provider	IEEE Xplore Digital Library
Author	Narimani, M. Moschopoulos, G.
Copyright Year	2012
Description	Author affiliation: Department of Electrical and Computer Engineering, The University of Western Ontario, London, Canada (Narimani, M.; Moschopoulos, G.)
Abstract	A Modular Voltage-Source Inverter (MVSI) uses individual three-phase modules in a shunt connection to share the total power in a symmetrical manner. The operation of paralleled inverters, however, results in the appearance of zero-sequence current that circulates among the inverter modules. Moreover, conventional PWM techniques do not take advantage of the modular structure of MVSIs to improve harmonic content. In this paper, a new selective harmonic elimination (SHE) PWM technique that eliminates more harmonics than convention techniques current is proposed in the paper. In the paper, the basic principles of conventional SHE-PWM are reviewed, then the proposed PWM technique is introduced and explained, and then it is shown how the proposed technique can be just as good in reducing zero-sequence circulating current as conventional methods. The concepts discussed in the paper are confirmed with results obtained from an experimental prototype.
Starting Page	2859
Ending Page	2865
File Size	1117866
Page Count	7
File Format	PDF
ISBN	9781467308021
e-ISBN	9781467308038
e-ISBN	9781467308014
DOI	10.1109/ECCE.2012.6342525
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-09-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Switching frequency Pulse width modulation Power system harmonics Harmonic analysis Inverters Equations
Content Type	Text
Resource Type	Article

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