Rajeevan, PP and Gopakumar, K (2013) A Reduced Device-Count Hybrid Multilevel Inverter Topology with single DC Source and Improved Fault Tolerance. In: EPE JOURNAL, 23 (2). pp. 14-23.
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A new hybrid multilevel power converter topology is presented in this paper. The proposed power converter topology uses only one DC source and floating capacitors charged to asymmetrical voltage levels, are used for generating different voltage levels. The SVPWM based control strategy used in this converter maintains the capacitor voltages at the required levels in the entire modulation range including the over-modulation region. For the voltage levels: nine and above, the number of components required in the proposed topology is significantly lower, compared to the conventional multilevel inverter topologies. The number of capacitors required in this topology reduces drastically compared to the conventional flying capacitor topology, when the number of levels in the inverter output increases. This topology has better fault tolerance, as it is capable of operating with reduced number of levels, in the entire modulation range, in the event of any failure in the H-bridges. The transient as well as the steady state performance of the nine-level version of the proposed topology is experimentally verified in the entire modulation range including the over-modulation region.
| Item Type: | Journal Article |
|---|---|
| Publication: | EPE JOURNAL |
| Publisher: | EPE ASSOC |
| Additional Information: | Copyright for this article belongs to EPE ASSOC,BELGIUM |
| Keywords: | Multilevel Power Converters; AC Drives |
| Department/Centre: | Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology) |
| Date Deposited: | 31 Jan 2014 11:45 |
| Last Modified: | 31 Jan 2014 11:48 |
| URI: | http://eprints.iisc.ac.in/id/eprint/48232 |
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