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Assessing the benefits of hybrid cycloconverters

Xu, Tianning; Klumpner, Christian; Clare, Jon


Tianning Xu

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Professor of Power Electronics


Power converters consisting of naturally commutated thyristors such as cycloconverters and current source inverters were the first to be used in driving electrical motors with variable speed, but now, due to their inferior performance compared to forced commutated converters, their use is restricted in the high voltage/high power range where the performance and cost of forced commutated switching devices are not yet competitive. Hybrid cycloconverters proposed recently are capable of improving the performance of cycloconverters by adding an auxiliary forced commutated inverter with reduced installed power. It will be shown that the new topology is not only able to improve the quality of the output voltage but is also able to enhance the control over the circulating current and, therefore, for some of the cycloconverter arrangements, to improve the input power quality. This paper evaluates the performance of a few standard and hybrid cycloconverter arrangements using both simulation and experimental results.


Xu, T., Klumpner, C., & Clare, J. (2011). Assessing the benefits of hybrid cycloconverters. IEEE Transactions on Industrial Electronics, 59(1),

Journal Article Type Article
Acceptance Date Jun 18, 2011
Publication Date Aug 18, 2011
Deposit Date Jul 13, 2016
Publicly Available Date Jul 13, 2016
Journal IEEE Transactions on Industrial Electronics
Print ISSN 0278-0046
Electronic ISSN 0278-0046
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 59
Issue 1
Public URL
Publisher URL
Copyright Statement Copyright information regarding this work can be found at the following address:
Additional Information c2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.


revised_paper_for_journal_(Tianning)_8th May_bio&names.pdf (3.4 Mb)

Copyright Statement
Copyright information regarding this work can be found at the following address:

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