matlab matlab/simulink matrix converter power quality power quality monitoring pqm objectives of pqm types of pqm devices long & short interruptions: interruptions – defini outage interruptions – causes of long interruptions – ori comparison of observations and reliability evaluat origin of short interruptions basic principle fuse saving voltage magnitude events due to re-closing voltage during the interruption monitoring of short interruptions difference between medium and low voltage systems. single phase tripping – voltage and current during voltage and current at post fault period
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