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On distributing multilevel SHE-PWM waveforms in HVDC systems built with conventional three-phase VSC modules

Lookup NU author(s): Dr Mohamed Dahidah


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A high-voltage direct current (HVDC) power transmission system based on eight voltage-source converter (VSC) modules is discussed in this paper. The system is operated with a selective harmonic elimination (SHE) pulse-width modulation (PWM) scheme, which is pre-calculated as a single multilevel waveform. There are many degrees of freedom on how such single multilevel waveform can be used to derive level switching signals for the individual converter modules and a selected number of available solutions are presented. The multimodule converter of the HVDC system can synthesize high voltage AC waveforms with controlled harmonic bandwidth and hence the AC-side filtering requirements are not excessive. The switching frequency of every VSC module is kept very low and therefore the overall module and system switching losses are kept to a minimum level. The theoretical findings are verified through simulation studies using PSCAD/EMTDC.

Publication metadata

Author(s): Flourentzou N, Dahidah MSA, Agelidis VG

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 39th Power Electronics Specialists Conference: IEEE-PESC 2008

Year of Conference: 2008

Pages: 4124-4129

ISSN: 0275-9306

Publisher: IEEE


DOI: 10.1109/PESC.2008.4592600

Library holdings: Search Newcastle University Library for this item

ISBN: 9781424416677