Comparison between UPQC, iUPQC and improved iUPQC

In this paper a new proposal for the control of power quality is made by interline unified power quality conditioner (iUPQC) and comparison is shown with conventional unified power quality conditioner. Improved iUPQC controller provides additional regulation as STATCOM to grid voltage. In this interline UPQC two back to back connected series and shunt converter are used. Source emulated by UPQC and iUPQC controller is different. One converter is act as controlled sinusoidal voltage that is shunt type and another is current source that is series type. These two techniques are solution for power quality problems in distribution and transmission system.