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A multi-level converter with a floating bridge for open-ended winding motor drive applications

Chowdhury, Shajjad; Wheeler, Patrick; Patel, Chintanbai; Gerada, C.

Authors

Shajjad Chowdhury eexsc12@nottingham.ac.uk

Patrick Wheeler pat.wheeler@nottingham.ac.uk

Chintanbai Patel ezzcp@exmail.nottingham.ac.uk

C. Gerada chris.gerada@nottingham.ac.uk



Abstract

This paper presents a dual three phase open end winding induction motor drive. The drive consists of a three phase induction machine with open stator phase windings and dual bridge inverter supplied from a single DC voltage source. To achieve multi-level output voltage waveforms a floating capacitor bank is used for the second of the dual bridges. The capacitor voltage is regulated using redundant switching states at half of the main dc link voltage. This particular voltage ratio (2:1) is used to create a multi-level output voltage waveform with three levels. A modified modulation scheme is used to improve the waveform quality of this dual inverter. This paper also compares the losses in dual inverter system in contrast with single sided three-level NPC converter. Finally, detailed simulation and experimental results are presented for the motor drive operating as an open loop v/f controlled motor drive and as a closed loop field oriented motor controller.

Journal Article Type Article
Publication Date May 2, 2016
Journal IEEE Transactions on Industrial Electronics
Print ISSN 0278-0046
Electronic ISSN 1557-9948
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 63
Issue 9
APA6 Citation Chowdhury, S., Wheeler, P., Patel, C., & Gerada, C. (2016). A multi-level converter with a floating bridge for open-ended winding motor drive applications. IEEE Transactions on Industrial Electronics, 63(9), doi:10.1109/TIE.2016.2561265
DOI https://doi.org/10.1109/TIE.2016.2561265
Keywords Field oriented control, Floating bridge, Open End Winding Induction Machine (OEWIM), Space vector
Publisher URL http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7463475
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information ©2016 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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