Fault Diagnosis in Three-Phase Thyristor Converters Using Microprocessor

Abstract

A microprocessor-based fault diagnosis scheme is presented for a three-phase fully controlled converter. In addition to the monitoring of the faults, the system also has the provision for a microprocessor-based firing scheme and a feedback-current control loop which provides protection against short circuit across the load terminals. The scheme has been experimentally tested. The osciliograms of some important waveforms are presented.

Showing 1-5 of 5 references

Digitally controlled thyristor current source

  • G Olivier, V Stefanovic, M A Jamil
  • 1981

Semiconductor fuses and their applications

  • A F Howe, P G Newbery
  • 1980
1 Excerpt

Fast ON/OFF detection of siliconcontrolled rectifiers and its influence on converter controllability

  • J Arrillaga, H Hisha
  • 1979

Fault-detection scheme for a direct digital control of a.c.-d.c. interconnections

  • J Arrillaga, G Galanos
  • 1970

as a Graduate Student His main interests are real-time application of microprocessors in power electronics and power systems, and digital signal processing

  • Canada