NDLI: PWM Method to Eliminate Power Sources in a Non-Redundant 27-Level Inverter for Machine Drive Applications

Content Provider	IEEE Xplore Digital Library
Author	Dixon, J. Rotella, M.
Copyright Year	2006
Description	Author affiliation: Dept. of Electr. Eng., Pontificia Univ. Catolica de Chile, Santiago (Dixon, J.)
Abstract	A non-redundant, three-stage, 27-level inverter using "H" converters, is analysed for machine drive applications. The main advantage of this converter is the optimisation of levels with a minimum number of semiconductors. However, the system needs six bi-directional and isolated power supplies, and three more unidirectional if the machine is not using regenerative braking. In this paper these nine power supplies are reduced to only four, all of them unidirectional, with three strategies: 1) the utilization of independent and isolated windings for each phase of the motor, 2) the utilization of independent input transformers, and 3), the most important of them, the application of special PWM strategies to keep positive average power at the medium power converters, and zero average power at the low power converters. The generation of this PWM and control of this multi-converter, is being implemented using DSP controllers, which give flexibility to the system
Starting Page	1094
Ending Page	1099
File Size	6849276
Page Count	6
File Format	PDF
ISBN	1424404967
DOI	10.1109/ISIE.2006.295789
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-07-09
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulse width modulation inverters Voltage Pulse width modulation Pulse width modulation converters Power supplies Amplitude modulation Switching frequency Bidirectional control Control systems Switching converters
Content Type	Text
Resource Type	Article

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