Sanjeevikumar Padmanaban
Analysis and implementation of power management and control strategy for six-phase multilevel ac drive system in fault condition
Padmanaban, Sanjeevikumar; Grandi, Gabriele; Blaabjerg, Frede; Wheeler, Patrick; Ojo, Joseph Olorunfemi
Authors
Gabriele Grandi
Frede Blaabjerg
PATRICK WHEELER pat.wheeler@nottingham.ac.uk
Professor of Power Electronic Systems
Joseph Olorunfemi Ojo
Abstract
This research article exploits the power management algorithm in post-fault conditions for a six-phase (quad) multilevel inverter. The drive circuit consists of four 2-level, three-phase voltage source inverter (VSI) supplying a six-phase open-end windings motor or/impedance load, with circumstantial failure of one VSI investigated. A simplified level-shifted pulse-width modulation (PWM) algorithm is developed to modulate each couple of three-phase VSI as 3-level output voltage generators in normal operation. The total power of the whole ac drive is shared equally among the four isolated DC sources. The developed post-fault algorithm is applied when there is a fault by one VSI and the load is fed from the remaining three healthy VSIs. In faulty conditions the multilevel outputs are reduced from 3-level to 2-level, but still the system propagates with degraded power. Numerical simulation modelling and experimental tests have been carried out with proposed post-fault control algorithm with three-phase open-end (asymmetrical induction motor/R-L impedance) load. A complete set of simulation and experimental results provided in this paper shows close agreement with the developed theoretical background.
Citation
Padmanaban, S., Grandi, G., Blaabjerg, F., Wheeler, P., & Ojo, J. O. (2016). Analysis and implementation of power management and control strategy for six-phase multilevel ac drive system in fault condition. Engineering Science and Technology, an International Journal, 19(1), https://doi.org/10.1016/j.jestch.2015.07.007
Journal Article Type | Article |
---|---|
Acceptance Date | Jul 13, 2015 |
Online Publication Date | Aug 7, 2015 |
Publication Date | Mar 1, 2016 |
Deposit Date | May 11, 2017 |
Publicly Available Date | May 11, 2017 |
Journal | Engineering Science and Technology, an International Journal |
Electronic ISSN | 2215-0986 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 19 |
Issue | 1 |
DOI | https://doi.org/10.1016/j.jestch.2015.07.007 |
Keywords | Dual three-phase motor; Multilevel inverter; Multi-phase motor drive; Open-end winding; Post-fault tolerance; Multilevel PWM; Level-shifted PWM |
Public URL | https://nottingham-repository.worktribe.com/output/977980 |
Publisher URL | http://www.sciencedirect.com/science/article/pii/S2215098615001081 |
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0
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