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Improvement of pulse width modulation techniques

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Contents

Pulse width modulation (P.W.M.) techniques, adopted in inverters for modern variable speed drives, allow an easy adjustment of the fundamental component of the output voltage.

Their use, however, entails certain disadvantages such as the complexity of the electronic control circuits and especially the deterioration of the performance of the inversion circuit. There such disadvantages can be reduced by resorting to improved modulation techniques.

This paper deals with an advantageous modification of the shape of the modulating wave in the suboscillation P.W.M. technique.

Übersicht

Pulsbreite-Modulationsverfahren, wie sie bei Wechselrichtern für Drehzahl-Regelantriebe verwendet werden, gestatten eine einfache Steuerung der Grundschwingungen der Ausgangsspannung. Bei der Anwendung sind allerdings verschiedene Nachteile, vor allem hinsichtlich der Komplexität, der elektrischen Steuerung und der Wechselrichterschaltung in Kauf zu nehmen. Diese Nachteile lassen sich jedoch durch verbesserte Modulationsverfahren mildern. Der Beitrag beschreibt eine vorteilhafte Version von Unterschwingungs-Modulationsverfahren.

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References

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Authors and Affiliations

  1. Istituto di Elettrotecnica ed Elettronica, Universitá di Padova, 35100, Padova, Italy

    G. Buja & G. Indri

Authors
  1. G. Buja
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  2. G. Indri
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Additional information

Research for this article was supported by the Consiglio Nazionale delle Ricerche (CNR—Gruppo, Macchine Elettriche), Padova, Italy.

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Buja, G., Indri, G. Improvement of pulse width modulation techniques. Archiv f. Elektrotechnik 57, 281–289 (1975). https://doi.org/10.1007/BF01476709

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  • DOI: https://doi.org/10.1007/BF01476709

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