27-09-2014, 01:48 PM
Abstracts: With rapid development in power semiconductor devices, the usage of power electronic systems has expanded to new and wide application range that include residential, commercial, aerospace and many others. Power electronic interfaces e.g. switch mode power supplies (SMPS). The current drawn by the SMPSs from the line is distorted resulting in a high Total Harmonic Distortion (THD) and low Power Factor (PF). Individually, a device with harmonic current does not pose much serious problem however when used on a massive scale the utility power supply condition could be detoriated. Other adverse effects on the power system include increased magnitudes of neutral currents in three-phase systems, overheating in transformers and induction motors etc. Hence, there is a continuous need for power factor improvement and reduction of line current harmonics. Development of new circuit topologies and control strategies for Power Factor Correction (PFC) and harmonic reduction has become still more essential with the introduction of strong technical IEC standards. This project aims to develop a circuit for PFC using active filtering approach by implementing boost converters arranged. It shall be based on an optimized power sharing strategy to improve the current quality and at the same time reduce the switching losses.