Improving Ruggedness of Rectifiers under Power Line Disturbances

摘要

The industry trend towards high power factor equipment with low harmonic distortion and low start-up or inrush current increases the power quality of the AC utility. There are still potential problems for equipment connected directly to the AC utility. Power line disturbances from the AC utility can affect the electric components in a disruptive or destructive manner.rnUnder severe lightning and heavy power line disturbances, both ferroresonant and switchmode rectifiers require proper protection of the semiconductors to prevent any failure of those components. The paper will present the required protection schemes used in common designs. The paper will also present a different curve of tolerance against line disturbances.