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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 6    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 6,June 2012
Improvement of Commutation Time in Matrix Converter
Full Text(PDF, )  PP.185-191  
Author(s)
Indrajit Sarkar, Sumanta Kumar Show, Prasid Syam
KEYWORDS
— Commutation Time, Current Commutation, Diode Clamp Circuit, Matrix Converter, Input Current Filter, Stepless Current Commutation, Undamped LC Filter
ABSTRACT
Matrix Converter is a near ideal static frequency changer which provides solution to the problem of converting ac from one frequency and one magnitude to variable frequency and variable magnitude ac, without any bulky energy storing components like capacitors or inductors. One of the major obstacles towards commercial acceptance of this topology has been the commutation of the bidirectional switches. An attempt has been made here to find a very fast and simple but safe current commutation technique. It has been found that with simple modification of the Input Current Filtering circuit and Diode Clamp circuit; the Stepless current commutation can be achieved giving the fastest, safe and simplest commutation technique without any voltage & current sensors and complex commutation steps. The different aspects of this realization are verified through simulation in PSPICE and Hardware implementation. The challenges still unresolved are also mentioned.
References
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[4] L.Empringham, P. W. Wheeler, and J. C. Clare, “Intelligent commutation of matrix Converter Bidirectional switch cells using novel gate drive techniques” in Proc. IEEE PESC’98, 1998, pp. 721-726

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[6] Peter Nielsen, Frede Blaabjerg, Senior Member, IEEE, and John K. Pedersen, Member, IEEE “New Protection Issues of a Matrix Converter: Design Considerations for Adjust able-Speed Drives” IEEE Transactions on Industry Applications, Vol 35, No. 5, September/October 1999

[7] A.Dasgupta, S.Mukherjee, M.Sengupta, P.Syam and A.K.Chattopadhyay “Implementation of Universal Logic System of Generating Commutating Pulses in Matrix Converters using FPGAs”, IEEEICIT06, Mumbai, December 2006 (Proceedings in CDROM), pp 1436-1441

[8] Ned Mohan, William Robbins and Tore Undeland, “Power Electronics converters, Applications and Design” Media Enhanced third edition, WILEY INDIA EDITION, 2007

[9] Sumanta Kumar Show, Indrajit Sarkar, Prasid Syam, ”Exploring the possibility of Single Step Current Commutation in a Matrix Converter” NPEC-2011, BESU, Shibpur, December 2011

[10] Indrajit Sarkar, Sumanta Kumar Show, Prasid Syam, ”Role of Input Current Filter to Facilitate Single Step Commutation in Matrix Converter” NPEC-2011, BESU, Shibpur, December 2011

[11] Indrajit Sarkar, Sumanta Kumar Show, Prasid Syam, ”Role of Diode Clamp Circuit to Facilitate Single Step Commutation in Matrix Converter” NPEC-2011, BESU, Shibpur, December 2011

[12] Sumanta Kumar Show, “Single Step current commutation technique in a Matrix Converter” ME Thesis, Dept. of EE BESU Shibpur, 2011

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