230v AC TO 12v Dc Unified Power quality Conditioner Convert 230v AC Using single Wire Earth Return Power Distribution Grids.

Abstract - This paper presents the design and development of a Unified Power Quality Conditioner (UPQC) that converts 230V AC to 12V DC while operating within a Single Wire Earth Return (SWER) power distribution network. SWER is an economical and widely used method for delivering electricity in rural and remote areas using a single live wire and the earth as the return path. However, SWER systems are vulnerable to voltage instability, harmonics, and poor power quality due to long transmission distances and load imbalances. The proposed UPQC system integrates both series and shunt compensation to mitigate power quality issues such as voltage sags/swells, harmonics, and flickers. The AC voltage from the SWER line is first stabilized and conditioned through the UPQC, then rectified and regulated to provide a constant 12V DC output suitable for low-voltage DC applications such as telecom equipment, DC lighting, or battery charging. The system combines power electronics components—such as voltage source converters (VSCs), filters, and controllers—with real-time sensing and control algorithms to ensure reliable operation under varying load and line conditions. This project demonstrates a practical and efficient solution for enhancing power quality and ensuring stable DC output in rural electrification scenarios using the SWER network. Keywords: UPQC, SWER, Power Quality, 230V AC to 12V DC, Voltage Source Converter, Rural Electrification