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A Novel PWM Inverter Switching Strategy for a Dual Two-level Inverter Fed Open-end Winding Induction Motor Drive

Somasekhar, VT and Gopakumar, K and Pittet, Andre and Ranganathan, VT (2001) A Novel PWM Inverter Switching Strategy for a Dual Two-level Inverter Fed Open-end Winding Induction Motor Drive. In: 4th IEEE International Conference on Power Electronics and Drive Systems, 2001. PEDS 2001, 22-25 October, Indonesia, Vol.1, 196-202.


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A dual two-level inverter fed open-end winding induction motor drive is proposed in this paper. A total of 64 voltage space phasor combinations are possible in this scheme as each inverter produces eight voltage space phasors. The proposed scheme produces voltage space phasor locations similar to that of a 3-level inverter. In a 3-level inverter the series connected DC link capacitors carry the load current. This results in a fluctuating voltage space phasors, which is undesirable. Also, a 3-level inverter requires a bulky DC link capacitor. In the proposed scheme the DC link capacitor carries only the ripple current and hence the voltage space phasor fluctuations are absent. A novel PWM switching strategy aimed to suppress the zero sequence currents is also proposed in this paper, without the need for harmonic filters and isolation transformers.

Item Type: Conference Paper
Publisher: IEEE
Additional Information: Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Open-end winding Induction motor;PWM technique
Department/Centre: Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited: 07 Feb 2006
Last Modified: 19 Sep 2010 04:23
URI: http://eprints.iisc.ac.in/id/eprint/5314

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