Implementation of Voltage-Based Commutation in Space-Vector-Modulated Matrix Converter

A novel voltage-based commutation (VBC) strategy without explicit input-voltage measurement is proposed in this paper. By properly selecting the width of the critical intervals, the two-step uncritical commutation and four-step critical commutation approaches are utilized to realize safe VBC. The ge...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2012-01, Vol.59 (1), p.154-166
Main Authors: She, Hongwu, Lin, Hua, He, Bi, Wang, Xingwei, Yue, Limin, An, Xing
Format: Article
Language:English
Subjects:
AC-AC power conversion
Commutation
current commutation
Current measurement
Distortion
induction motor drives
Intervals
matrix converter
Matrix converters
Modulation
Safety
space-vector modulation (SVM)
Strategy
Support vector machines
Switches
Switching
Voltage measurement
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Summary:A novel voltage-based commutation (VBC) strategy without explicit input-voltage measurement is proposed in this paper. By properly selecting the width of the critical intervals, the two-step uncritical commutation and four-step critical commutation approaches are utilized to realize safe VBC. The general switching patterns of space-vector modulation (SVM) are analyzed, and the four-step critical commutations are avoided by using four selected SVM switching patterns; thus, all the commutations in the matrix converter can be achieved by two-step VBC. In order to prevent the commutation processes from being interrupted, the triple-zero-vector switching pattern and the single-zero-vector switching pattern are utilized by selecting an appropriate commutation time and the output-voltage/current distortion is minimized. Prototype experiments have been carried out to show the validity of the control strategies.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2011.2130497