Comparison of Neutral-Point-Clamped, Symmetrical, and Hybrid Asymmetrical Multilevel Inverters

Comparison of Neutral-Point-Clamped, Symmetrical, and Hybrid Asymmetrical Multilevel Inverters

This paper presents a comparison of three topologies of multilevel inverters applied to drive an induction motor of 500 kVA/4.16 kV rating. The multilevel inverters analyzed are the following: a neutral-point-clamped inverter, a symmetrical cascaded multilevel inverter, and a hybrid asymmetrical cas...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) Vol. 57; no. 7; pp. 2297 - 2306
Main Authors: Zambra, Diorge A B, Rech, Cassiano, Pinheiro, José Renes
Format: Journal Article
Language:English
Published: New York IEEE 01-07-2010
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Amplitude modulation
Asymmetry
Chemical industry
Distortion
Electric potential
Harmonic distortion
Induction motors
Induction-motor drives
Inverters
Milling machines
Multilevel
multilevel systems
Performance analysis
Semiconductors
Topology
Total harmonic distortion
Variable speed drives
Voltage
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Summary:This paper presents a comparison of three topologies of multilevel inverters applied to drive an induction motor of 500 kVA/4.16 kV rating. The multilevel inverters analyzed are the following: a neutral-point-clamped inverter, a symmetrical cascaded multilevel inverter, and a hybrid asymmetrical cascaded multilevel inverter. The performance indexes used in the comparison are total harmonic distortion, first-order distortion factor, second-order distortion factor, common-mode voltage, semiconductor power loss distribution, and heat-sink volume. The multilevel inverters are designed to present 99% efficiency at the nominal operating point, and the aforementioned performance indexes are compared for distinct values of amplitude modulation depth.
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ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2010.2040561