NDLI: Pulsating Torques in PWM Multi-Megawatt Drives for Torsional Analysis of Large Shafts

Content Provider	IEEE Xplore Digital Library
Author	Song-Manguelle, J. Nyobe-Yome, J.M.
Copyright Year	2008
Description	Author affiliation: Adv. Technol. Lab., Baldor Drives Center, Montreal, QC (Song-Manguelle, J.)
Abstract	This paper presents new, simple and linear mathematical relationships to predict pulsating torque frequencies in industrial multi-megawatt pulse-width-modulated drives. The proposed relationships provide direct definition of possible drive operating points where the torsional resonance modes of the mechanical shaft assembly might be excited. The calculation accuracy of natural frequencies and the induction motor slip have been taken into account in the definition of a critical excitation band. Variable switching frequency PWM strategies have also been analyzed. Pulsating torque frequencies of complex load-commutated-inverter (LCI) configurations have been proposed as complementary results. Several tests have been performed on an integrated-motor- compressor system operating at high-speed (3.3 kV, 6 MW at 10000 rpm). Intensive simulation results of a higher power PWM drive for compressor applications are shown to validate the suggested approach. This paper is a key tool for electrical engineers involved in the design of multi-megawatt drive systems such as in LNG compression and transportation, mining or cements.
Starting Page	1
Ending Page	8
File Size	439416
Page Count	8
File Format	PDF
ISBN	9781424422784
ISSN	01972618
DOI	10.1109/08IAS.2008.211
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-05
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Shafts Space vector pulse width modulation Torque Accuracy Induction motors Industrial relations Pulse width modulation Frequency Resonance Assembly
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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Pulsating Torques in PWM Multi-Megawatt Drives for Torsional Analysis of Large Shafts

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