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Synchronised PWM strategies based on space vector approach. Part 1 : Principles of waveform generation

Narayanan, G and Ranganathan, VT (1999) Synchronised PWM strategies based on space vector approach. Part 1 : Principles of waveform generation. In: IEE Proceedings of Electric Power Applications, 146 (3). pp. 267-275.

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Official URL: http://dx.doi.org/10.1049/ip-epa:19990118

Abstract

The authors deal with space-vector-based generation of synchronised three-phase PWM waveforms with three-phase, half-wave and quarter-wave symmetries. The necessary and sufficient conditions for synchronisation and the waveform symmetries are brought out in terms of the inverter states. These conditions are applied to the conventional and modified forms of space vector modulation to generate synchronised PWM waveforms with all the symmetries. Further, the necessary conditions governing the numbers of switchings of the different phases in any given sector to maintain the symmetries are identified. These rules are used to develop two new clamping strategies, namely the asymmetric zero-changing strategy and the boundary sampling strategy, which exploit the flexible features of space vector methods like double-switching of a phase and clamping of two phases in a sampling period. Typical waveforms corresponding to the different strategies are presented along with their theoretical and experimental spectra. The performance assessment of these strategies and their application to drives are dealt with in Part 2.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Institution of Electrical Engineers (IEE)
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 20 Sep 2005
Last Modified: 06 May 2011 06:24
URI: http://eprints.iisc.ernet.in/id/eprint/3212

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