A Seventeen-level Inverter With a Single DC-link For Motor Drives

Roshankumar, P and Kaarthik, Sudharshan and Gopakumar, K and Rajeevan, PP and Leon, Jose I and Franquelo, Leopoldo G (2013) A Seventeen-level Inverter With a Single DC-link For Motor Drives. In: 39th Annual Conference of the IEEE Industrial-Electronics-Society (IECON), NOV 10-14, 2013, Vienna, AUSTRIA, pp. 6176-6181.

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Abstract

In the present paper, a novel topology for generating a 17-level inverter using three-level flying capacitor inverter and cascaded H-bridge modules with floating capacitors. The proposed circuit is analyzed and various aspects of it are presented in the paper. This circuit is experimentally verified and the results are shown. The stability of the capacitor balancing algorithm has been verified during sudden acceleration. This circuit has many pole voltage redundancies. This circuit has an advantage of balancing all the capacitor voltages instantaneously by switching through the redundancies. Another advantage of this topology is its ability to generate all the 17 pole voltages from a single DC link which enables back to back converter operation. Also, the proposed inverter can be operated at all load power factors and modulation indices. Another advantage is, if one of the H-bridges fail, the inverter can still be operated at full load with reduced number of levels.

Item Type:	Conference Paper
Series.:	IEEE Industrial Electronics Society
Publisher:	IEEE
Additional Information:	Copyright for this article belongs to the IEEE.
Keywords:	Seventeen level inverter; Multilevel inverter; Flying Capacitor; Cascaded H-bridge
Department/Centre:	Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited:	07 Apr 2014 07:02
Last Modified:	07 Apr 2014 07:07
URI:	http://eprints.iisc.ac.in/id/eprint/48787

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