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Dual two-level inverter scheme for an open-end winding induction motor drive with a single DC power supply and improved DC bus utilisation.
- Source :
-
IEE Proceedings -- Electric Power Applications . Mar2004, Vol. 151 Issue 2, p230-238. 9p. - Publication Year :
- 2004
-
Abstract
- A dual two-level inverter fed open-end winding induction motor drive with a single DCpower supply is proposed. The proposed scheme produces voltage space vector locations identical to those of a conventional three-level inverter. In the conventional neutral-clamped three-level inverter, the series-connected DC link capacitors carry the load current, resulting in a fluctuating neutral point. Also, a three-level inverter requires bulky DC link capacitors. In the proposed scheme, the DC link capacitors carry currents of higher frequency and hence the neutral point fluctuations are reduced. A PWM switching strategy to suppress the zero sequence currents for all the voltage space phasor combinations is also proposed. This strategy is an improvisation of the one that uses a switched neutral to eliminate the triplen harmonic currents and results in an improved DC bus utilisation. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13502352
- Volume :
- 151
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- IEE Proceedings -- Electric Power Applications
- Publication Type :
- Academic Journal
- Accession number :
- 12345595
- Full Text :
- https://doi.org/10.1049/ip-epa:20040023