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Low Switch Count Nine-Level Inverter Topology for Open-End Induction Motor Drives

Kshirsagar, Abhijit and Kaarthik, Sudharshan R and Gopakumar, K and Umanand, Loganathan and Rajashekara, Kaushik (2017) Low Switch Count Nine-Level Inverter Topology for Open-End Induction Motor Drives. In: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 64 (2). pp. 1009-1017.

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Official URL: http://dx.doi.org/10.1109/TIE.2016.2615015

Abstract

This paper presents a nine-level inverter topology for an open-end induction motor drive requiring only eight switches per phase, using two three-level inverters with two isolated dc links in a 3:1 ratio. A space-vector-based formulation is used to determine pole voltages such that both inverters supply power to the load over the full modulation range, eliminating the possibility of dc bus overcharging. Proper selection of switching states ensures that all floating capacitor voltages are kept tightly balanced. A digital state machine is used to select sequences of switching states in order to eliminate deadtime-induced pole voltage transients, further improving the output-voltage quality. A level-shifted carrier-based pulse width modulation scheme is used. The steady-state and transient performance of this topology were verified and the experimental results are included.

Item Type: Journal Article
Publication: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Publisher: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Additional Information: Copy right for this article belongs to the IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 03 Apr 2017 04:36
Last Modified: 03 Apr 2017 04:36
URI: http://eprints.iisc.ac.in/id/eprint/56434

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