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Multilevel dodecagonal space-vector generation for induction motor drives by cascading three-level and two-level inverters

Mathew, K and Mathew, J and Azeez, NA and Dey, A and Umanand, L and Gopakumar, K (2012) Multilevel dodecagonal space-vector generation for induction motor drives by cascading three-level and two-level inverters. In: IET POWER ELECTRONICS, 5 (8). pp. 1324-1332.

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Official URL: http://dx.doi.org/10.1049/iet-pel.2012.0095

Abstract

This study proposes an inverter circuit topology capable of generating multilevel dodecagonal (12-sided polygon) voltage space vectors by the cascaded connection of two-level and three-level inverters. By the proper selection of DC-link voltages and resultant switching states for the inverters, voltage space vectors whose tips lie on three concentric dodecagons, are obtained. A rectifier circuit for the inverter is also proposed, which significantly improves the power factor. The topology offers advantages such as the complete elimination of the fifth and seventh harmonics in phase voltages and an extension of the linear modulation range. In this study, a simple method for the calculation of pulse width modulation timing was presented along with extensive simulation and experimental results in order to validate the proposed concept.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to INST ENGINEERING TECHNOLOGY-IET, ENGLAND
Department/Centre: Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Depositing User: Francis Jayakanth
Date Deposited: 31 Dec 2012 08:15
Last Modified: 31 Dec 2012 08:15
URI: http://eprints.iisc.ac.in/id/eprint/45606

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