Authors: R. Vinod, P. Swathi
Abstract: Power factor (PF) is a critical parameter in electrical systems, reflecting the efficiency of energy usage. Low power factor leads to increased losses, reduced system capacity, and higher electricity costs. Power factor correction (PFC) circuits improve system efficiency and comply with regulatory standards. This paper presents a comprehensive study of PFC techniques, including passive, active, and hybrid methods, with a focus on circuit-level implementations. Design principles, performance metrics, and control strategies are discussed. Tables and two-dimensional figures illustrate typical PFC circuits, input/output waveforms, and efficiency comparisons. The study serves as a practical guide for engineers, researchers, and students in electrical system design and optimization.
Keywords: Power factor, correction circuits, active PFC, passive PFC, efficiency, harmonic reduction
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