Abstract
A topology for multilevel voltage space phasor generation for an open-end winding induction motor drive is presented in this paper. The open-end winding induction motor is fed from both ends by two 3-level inverters. Each 3-level inverter is formed by cascading two 2-level inverters. This results in voltage space phasor levels equivalent to a conventional 8-level inverter. The proposed 8- level inverter configuration requires lesser number of switching devices as compared to conventional 8-level inverter scheme. Compared to the H-bridge topology, the proposed scheme uses a lower number of power supplies. In the multilevel carrier-based Sinusoidal Pulse Width Modulation (SPWM), used for the proposed drive, a progressive discrete DC bias depending on the speed range is given to the reference wave so that the drive can operate in the i-level modes (i=2, 3, …8) depending on the speed range. The inverter with the higher DC-link voltage is switching less frequently, compared to the inverter with the lower DC-link voltage.
Metadata
Item Type: | Article |
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Creators: | Creators Email / ID Num. Sekhar, K. Chandra cskoritala@hotmail.com Ram Das, G. Tulasi (Dr.) das_tulasiram@yahoo.co.in |
Subjects: | T Technology > TK Electrical engineering. Electronics. Nuclear engineering |
Divisions: | Universiti Teknologi MARA, Shah Alam |
Journal or Publication Title: | Journal of Electrical and Electronic Systems Research (JEESR) |
UiTM Journal Collections: | UiTM Journal > Journal of Electrical and Electronic Systems Research (JEESR) |
ISSN: | 1985-5389 |
Volume: | 1 |
Page Range: | pp. 1-10 |
Keywords: | Multilevel inversion, open-end winding Induction motor drive |
Date: | June 2008 |
URI: | https://ir.uitm.edu.my/id/eprint/46933 |