NDLI: Reduction of parasitic spectral components of digital space vector modulation by real-time numerical methods

Content Provider	IEEE Xplore Digital Library
Author	Vukosavic, S.N. Stojic, M.R.
Copyright Year	1986
Abstract	This paper presents the analysis of the voltage error caused by a finite resolution of the modulator of a three-phase PWM invertor. A suitable algorithm is proposed in order to eliminate offsets and to reduce parasitic components for as much as 15 dB. Essentially, the algorithm represents the numerical procedure of rounding the high-resolution amplitude products into lower resolution digital words that are to be loaded into the PWM counters. For a given resolution of the modulator, the suggested procedure considers the coupling between the phase residual errors and selects counter loads in such a way that the minimum voltage vector error is obtained. The presented analytical considerations are verified by experimental results. The spectra of the inverter output voltage, obtained in an experimental setup, illustrate the efficiency of the proposed algorithm in suppressing undesired spectral components of the inverter output.<>
Sponsorship	IEEE Power Electronics Society
Starting Page	94
Ending Page	102
Page Count	9
File Size	905867
File Format	PDF
ISSN	08858993
Volume Number	10
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Digital modulation Voltage Pulse width modulation inverters Pulse width modulation Space vector pulse width modulation Uninterruptible power systems Counting circuits Phase modulation Frequency Leg
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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