Power Quality Analysis and Voltage Sag Indices Using Fuzzy Based Dual UPQC Under Unsymmetrical Fault Condition

Power quality is the major problem in fast growing electical systems. Persistent increase non linear loads have caused distortions distribution system leading to becoming unbalanced current and voltage waveforms which affect of power.The power issues analyzed this paper relate sag, reactive power, harmonics, interharmonics, subharmonics, voltage, current, inrush Induction motor.Also line ground fualt created analysed with conventional Dual UPQC. The performance analysis various are compared four different casessuch as UPQC SRF-PI controller, fuzzy controller results tabulated. simulation show that based dual better than PI controller.