Comparative Analysis of Internal Power Loss Modeling and Conversion Efficiency for Major PFC Topologies Using Load Current-dependent Loss Factors

Key Points

• The study aims to analyze internal power losses and conversion efficiency in power factor correction topologies using a detailed theoretical framework.
• Proposed a theoretical approach based on equivalent circuit models for steady-state analysis.
• Introduced load current-dependent loss factors categorized for each major power component.
• Visualized loss factors using detailed charts and graphs for intuitive understanding.
• Conducted experimental validation using a 400W power factor correction circuit.
• The theoretical calculation of efficiency showed less than 0.5% error compared to actual measured efficiency under maximum load conditions.
• Validated the proposed loss factor model's accuracy, making it a valuable tool for performance analysis and design optimization of power correction circuits.

Abstract