A Generalized-Switch-Matrix-Based Space Vector Modulation Technique Using the Nearest Level Modulation Concept for Neutral-Point-Clamped Multilevel Inverters

Multilevel inverters (MLIs) have replaced conventional two-level inverters for medium-voltage high-power industrial applications. One of the best modulation techniques for MLIs is the space vector modulation (SVM). Although SVM has its own advantages, it has been overlooked for much simpler carrier-...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2018-06, Vol.65 (6), p.4542-4552
Main Authors: Pratheesh, K. J., Jagadanand, G., Ramchand, Rijil
Format: Article
Language:English
Subjects:
Algorithms
Computer simulation
Industrial applications
Inverters
Mathematical analysis
Matrix algebra
Matrix methods
Modularity
Modulation
Multilevel inverters (MLI)
nearest level modulation (NLM)
neutral point clamped (NPC)
Phase modulation
Space vector modulation
space vector modulation (SVM)
Space vector pulse width modulation
Support vector machines
switch matrix (SM)
Switches
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Summary:Multilevel inverters (MLIs) have replaced conventional two-level inverters for medium-voltage high-power industrial applications. One of the best modulation techniques for MLIs is the space vector modulation (SVM). Although SVM has its own advantages, it has been overlooked for much simpler carrier-based modulation schemes in the industry. Nearest level modulation (NLM) is a simple alternative, which is functionally similar to SVM. In this paper, a new generalized SVM algorithm is presented, in which the SVM is achieved using the concept of NLM. A generalized switch matrix is introduced to derive gate pulses for the inverter, which further simplifies the algorithm. The algorithm is tested and verified for a three-phase, three-level, and five-level neutral-point-clamped inverters in both simulation and hardware.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2017.2772172