Optimal Switching Frequency Variation Range Control for Critical Conduction Mode Boost Power Factor Correction Converter

2021 ◽  
Vol 68 (2) ◽  
pp. 1197-1209
Author(s):  
Kai Yao ◽  
Kaili Chen ◽  
Chunyan Mao ◽  
Huanqi Tang ◽  
Lei Li ◽  
...  
Keyword(s):  
Power Factor ◽  
Power Factor Correction ◽  
Frequency Variation ◽  
Switching Frequency ◽  
Optimal Switching ◽  
Variation Range ◽  
Conduction Mode

Improved Efficiency in Power Factor Correction Circuits with a pn-Gated SiC FET

2007 ◽  
Vol 556-557 ◽  
pp. 995-998 ◽  
Author(s):  
Robin L. Kelley ◽  
Michael S. Mazzola ◽  
William L. Draper
Keyword(s):  
Power Factor ◽  
Integrated Circuit ◽  
Field Effect Transistor ◽  
High Efficiency ◽  
Power Factor Correction ◽  
Switching Function ◽  
Switching Frequency ◽  
Voltage Range ◽  
Effect Transistor ◽  
Conduction Mode

The purpose of this paper is to present an all-SiC switched AC-DC converter using active power factor correction. The typical boost-converter approach is employed using continuous conduction mode. A SiC Schottky barrier diode performs the free-wheeling diode function, and a 600 V, 0.12 % SiC vertical junction field effect transistor performs the switching function under the control of a Fairchild ML4821 integrated circuit. The converter is operable off-line over the full universal voltage range (85-260 VAC), but it was optimized for a 400-600 W application operating at 208 VAC. Results are presented that demonstrate extremely high efficiency at a switching frequency of 500 kHz, the highest operating frequency of the ML4821.

A Novel High Gain SEPIC Converter with the Tapped Inductor Model Operating in Discontinuous Conduction Mode for Power Factor Correction

2016 ◽  
Vol 7 (2) ◽  
pp. 450
Author(s):  
Sathiyamoorthy S ◽  
Gopinath M
Keyword(s):  
Power Factor ◽  
Power Factor Correction ◽  
High Gain ◽  
Industrial Applications ◽  
Switching Frequency ◽  
Voltage Multiplier ◽  
Discontinuous Conduction Mode ◽  
Research Areas ◽  
Zero Current Switching ◽  
Conduction Mode

Power Factor Correction (PFC) has become one of the most active research areas in the field of power electronics due to the surplus power required for various industrial applications around the world. In this work, a novel SEPIC converter with the Tapped Inductor model operating in Discontinuous Conduction Mode (TI-SEPIC- DCM) is proposed for PFC. The proposed TI-SEPIC-DCM improves the voltage gain through voltage multiplier cell and charge pump circuit. The voltage multiplier cell also helps in attaining the Zero-Voltage Switching (ZVS) and Zero-Current Switching (ZCS), which results in higher switching frequency and size reduction. Moreover, a third order harmonic reduction control loop has been proposed for better harmonic mitigation. The proposed work has been simulated in MATLAB and the results are obtained to validate the significance of the proposed TI-SEPIC- DCM with near unity power factor and reduced harmonics.

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