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Multilevel octadecagonal space vector generation for induction motor drives by cascading asymmetric three level inverters

Mathew, K and Gopakumar, K and Mathew, Jaison and Azeez, Najath Abdul and Dey, Anubrata and Umanand, L (2012) Multilevel octadecagonal space vector generation for induction motor drives by cascading asymmetric three level inverters. In: 38th Annual Conference on IEEE-Industrial-Electronics-Society (IECON), OCT 25-28, 2012, Montreal, QC, Canada, pp. 1915-1920.

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Official URL: http://dx.doi.org/10.1109/IECON.2012.6388909

Abstract

Multilevel inverters with hexagonal and dodecagonal voltage space vector structures have improved harmonic profile compared to two level inverters. Further improvement in the quality of the waveform is possible using multilevel octadecagonal (18 sided polygon) voltage space vectors. This paper proposes an inverter circuit topology capable of generating multilevel octadecagonal voltage space vectors, by cascading two asymmetric three level inverters. By proper selection of DC link voltages and the resultant switching states for the inverters, voltage space vectors, whose tips lie on three concentric octadecagons, are obtained. The advantages of octadecagonal voltage space vector based PWM techniques are the complete elimination of fifth, seventh, eleventh and thirteenth harmonics in phase voltages and the extension of linear modulation range. In this paper, a simple PWM timing calculation method is also proposed. Matlab simulation results and experimental results have been presented in this paper to validate the proposed concept.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to IEEE.
Department/Centre: Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Depositing User: Francis Jayakanth
Date Deposited: 18 Jun 2013 11:39
Last Modified: 18 Jun 2013 11:39
URI: http://eprints.iisc.ac.in/id/eprint/46739

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