Power electronics for power quality improvements

Control of most of the industrial loads is mainly based on semiconductor devices, which causes such loads to be more sensitive against power system disturbances. Thus, the power quality problems have gained more interest recently. This paper presents a review of some the disturbances, on the source side that may cause problems on the load side. Focus is given on problems associated with voltage dips as voltage dips have been reported to be the most severe problems to industrial loads. Solutions towards such problems using power electronics equipment are explored.