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Medium Voltage Drive for Induction Motors Using Multilevel Octadecagonal Voltage Space Vectors

Mathew, K and Gopakumar, K and Mathew, Jaison and Azeez, Najath Abdul and Dey, Anubrata and Umanand, L (2013) Medium Voltage Drive for Induction Motors Using Multilevel Octadecagonal Voltage Space Vectors. In: IEEE TRANSACTIONS ON POWER ELECTRONICS, 28 (7). pp. 3573-3580.

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Official URL: http://dx.doi.org/10.1109/TPEL.2012.2227507


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 the 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 pulsewidth modulation (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. Experimental results have been presented in this paper to validate the proposed concept.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, USA
Keywords: Induction motor drive;multilevel inverter;octadecagonal space vectors;space vector pulsewidth modulation (PWM)
Department/Centre: Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited: 14 Mar 2013 09:45
Last Modified: 14 Mar 2013 09:45
URI: http://eprints.iisc.ac.in/id/eprint/45984

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