POWER QUALITY IMPROVEMENT USING UNIFIED POWER QUALITY CONDITIONER (UPQC)

The preferential use of power electronics devices introduces harmonics into the supply system and causes problems with the quality of the energy supplied. Good network quality is very important for the daily use of devices in both the industry and the home. Researchers have tried and implemented many useful techniques to eliminate all harmonic problems related to voltage and current. This improves the quality of the energy supplied to the power grid. The main focus of this work is control strategies such as SRF theory and instantaneous power (p-q) for the operation of Unified Power Quality Conditioner (UPQC), one of the latest technologies including both series and shunt active power filters simultaneously. Is an implementation of. This helps reduce total harmonic distortion (THD) while improving all current and voltage related issues such as voltage sagging/expansion andflicker.
This paper shows how to use the UPQC model to reduce the% THD of source voltage, source current, and load voltage waveforms resulting from non-linear / sensitive loads by MATLAB simulation.

Keywords: Active power filter (APF), harmonic compensation, power quality, reactive power compensation, unified power quality conditioner (UPQC), voltage sag and swell compensation.