Affiliation:
1. Department of Electronic Engineering, Hanbat National University, Daejeon 34158, Republic of Korea
Abstract
This study proposes a novel frequency modulation scheme for a continuous conduction mode (CCM) boost power factor correction (PFC) converter. The aim is to improve the total harmonic distortion (THD) under light-load conditions. Boost converters are widely utilized with CCM control for the PFC stage owing to their ability to achieve high efficiency with minimal components. In addition, they have a high power factor (PF) and low THD. However, despite being designed for CCM operation, the boost PFC converter transitions into discontinuous conduction mode (DCM) as the output load decreases. This mode, known as mixed conduction mode, degrades the PF and THD of the PFC converter. To address these issues, we propose a novel frequency modulation scheme. The CCM boost PFC converter adopts frequency variation to reduce the DCM region. To validate the feasibility of the proposed concept, a prototype with a 60 Hz/230 Vac input and 850 W/380 V output was utilized. Consequently, the boost PFC converter attains a high PF and low THD with simplified circuits.
Funder
“Regional Innovation Strategy (RIS)” through the National Research Foundation of Korea
Ministry of Education
MSIT (Ministry of Science and ICT), Korea, under the ICAN (ICT Challenge and Advanced Network of HRD) program
IITP
Reference25 articles.
1. (2001). Limits for Harmonic Current Emissions (Equipment Input Current <16A per Phase) (Standard No. IEC 61000-3-2).
2. (2024, January 01). Climate Savers Computing Initiative (CSCS). Available online: https://www.greenit.fr/climate-savers-computing/.
3. Comparative Performance Aanlysis of High Density and Efficiency PFC Topologies;Kim;IEEE Trans. Power Electron.,2014
4. A Simple Digital DCM Control Scheme for Boost PFC Operating in Both CCM and DCM;Lim;IEEE Trans. Ind. Appl.,2011
5. Duty-Ratio Feedforward for Digitally Controlled Boost PFC Converters;Melkbeek;IEEE Trans. Ind. Electron.,2005