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Implementation of a hybrid AC-AC direct power converter with unity voltage transfer

Wijekoon, Thiwanka; Klumpner, Christian; Zanchetta, Pericle; Wheeler, Patrick

Authors

Thiwanka Wijekoon

Christian Klumpner klumpner@ieee.org

Pericle Zanchetta

Patrick Wheeler



Abstract

This paper presents a novel hybrid direct power converter (HDPC) which overcomes the two main disadvantages of matrix converters: limited voltage transfer ratio and low immunity to grid disturbance. The proposed converter is formed by integrating a reversible auxiliary boost converter in the dc link of the two-stage matrix converter. Therefore, the HDPC can provide unity voltage transfer ratio even in the case where the supply voltage is highly unbalanced. The proposed converter also preserves most of the inherent advantages of the conventional matrix converter such as: controllable input power factor, sinusoidal supply currents, and bidirectional power flow. A novel predictive current control technique for the HDPC is also proposed for minimum energy storage in the converter. Important aspects of design, control, and implementation of the new HDPC are presented including theoretical analysis and simulations. Experimental waveforms at unity voltage transfer using a laboratory prototype are presented to confirm the viability of the proposed idea.

Journal Article Type Article
Publication Date Jun 20, 2008
Journal IEEE Transactions on Power Electronics
Print ISSN 0885-8993
Electronic ISSN 0885-8993
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 23
Issue 4
Institution Citation Wijekoon, T., Klumpner, C., Zanchetta, P., & Wheeler, P. (2008). Implementation of a hybrid AC-AC direct power converter with unity voltage transfer. IEEE Transactions on Power Electronics, 23(4), doi:10.1109/TPEL.2008.924601
DOI https://doi.org/10.1109/TPEL.2008.924601
Keywords AC–AC converters, matrix converters, predictive
current control, unbalanced voltage, voltage transfer ratio
Publisher URL http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4548148
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information (c) 2008 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

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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