Capacitor Commutated Contverter using an Adaptive Active Capacitor for HVDC System

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Abstract

Thyristor rectifiers for HVDC transmission have two drawbacks, which are its sensitivity to commutation failure and its consumption of reactive power. One way to overcome these drawbacks is the use of capacitors connected between the thyristor rectifier and the AC bus. This paper introduces an approach to capacitor-commutated converter (CCC) using an active capacitor. A three-phase voltage source PWM converter is connected to resemble the effect of the capacitor. The control strategy is discussed. The simulation results are presented using PSCAD/EMTDC.

Original languageBritish English
Pages (from-to)529-534
Number of pages6
JournalCanadian Conference on Electrical and Computer Engineering
Volume1
StatePublished - 2003
EventCCECE 2003 Canadian Conference on Electrical and Computer Engineering: Toward a Caring and Humane Technology - Montreal, Canada
Duration: 4 May 20037 May 2003

Keywords

  • Capacitor commutated converter
  • Commutation failure
  • Commutation margin
  • PWM
  • Thyristor

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