• Soni Parth
• Amit Panchal

Unified Power Quality Conditioner (UPQC) is combination of shunt and series active power filter which are used in distribution system to control the voltage related problem such as voltage harmonics, voltage flicker, voltage sag-swell and current related problem such as current harmonics, Reactive current and current unbalance. By Studying the performance of UPQC using Instantaneous active and reactive power theory (p-q) for shunt active power filter and synchronous reference frame theory (d-q) for series active power filter to generate the reference signal for voltage and current. The hysteresis controller is used to generate the gating signal for shunt voltage source inverter connected to the sensitive load and non-liner load. The sinusoidal pulse width modulation techniques (SPWM) are used to generate the gating signal for series voltage source inverter which is connected to the feeder through series injection transformer. The PI controller are used to generate signal to compensate the errors. Energy storage element such as battery is not required for unified power quality conditioner. The MATLAB/SIMULATION model of unified power quality conditioner (UPQC) is used to improvement of power quality problem at distribution network.

Power Quality, Unified Power Quality Conditioner (UPQC), Active Power Filter (APF), p-q theory, d-q theory, voltage sag, voltage swell, current harmonics.

"OPTIMIZATION OF ELECTRICAL POWER QUALITY USING UNIFIED POWER QUALITY CONDITIONER: A REVIEW", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.173-177, May - 2019, Available :http://www.jetir.org/papers/JETIRCQ06030.pdf

"OPTIMIZATION OF ELECTRICAL POWER QUALITY USING UNIFIED POWER QUALITY CONDITIONER: A REVIEW", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp173-177, May - 2019, Available at : http://www.jetir.org/papers/JETIRCQ06030.pdf