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Seventeen-Level Inverter Formed by Cascading Flying Capacitor and Floating Capacitor H-Bridges

Kumar, Roshan P and Kaarthik, Sudharshan R and Gopakumar, K and Leon, Jose I and Franquelo, Leopoldo G (2015) Seventeen-Level Inverter Formed by Cascading Flying Capacitor and Floating Capacitor H-Bridges. In: IEEE TRANSACTIONS ON POWER ELECTRONICS, 30 (7). pp. 3471-3478.

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Official URL: http://dx.doi.org/10.1109/TPEL.2014.2342882


A multilevel inverter for generating 17 voltage levels using a three-level flying capacitor inverter and cascaded H-bridge modules with floating capacitors has been proposed. Various aspects of the proposed inverter like capacitor voltage balancing have been presented in the present paper. Experimental results are presented to study the performance of the proposed converter. The stability of the capacitor balancing algorithm has been verified both during transients and steady-state operation. All the capacitors in this circuit can be balanced instantaneously by using one of the pole voltage combinations. Another advantage of this topology is its ability to generate all the voltages from a single dc-link power supply which enables back-to-back operation of converter. Also, the proposed inverter can be operated at all load power factors and modulation indices. Additional advantage is, if one of the H-bridges fail, the inverter can still be operated at full load with reduced number of levels. This configuration has very low dv/dt and common-mode voltage variation.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Keywords: Cascaded H-bridge; flying capacitor; multilevel inverter; 17-level inverter
Department/Centre: Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited: 22 May 2015 06:40
Last Modified: 22 May 2015 06:40
URI: http://eprints.iisc.ac.in/id/eprint/51544

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