Modeling of the AC/HF/DC converter with power factor correction

Modeling of theAC/HF/DCconverter with power factor correctionIn this paper, the power factor correction system consisted of: bridge converter, parallel resonant circuit, high frequency transformer, diode rectifier andLFCFfilter is presented. This system is controlled by a pulse density modulation method and the principle of its operation is based on the boost technique. The modeling approach is illustrated by an example usingAC/HF/DCconverter. Verification of the derived model is provided, which demonstrated the validity of the proposed approach.

Download Full-text

Single Phase AC to DC Isolated ZETA Power Factor Correction Converter fed LED drives

International Journal of Scientific Research in Science Engineering and Technology ◽

10.32628/ijsrset207422 ◽

2020 ◽

pp. 73-80

Author(s):

S. T. Siddharthan ◽

Andrew Jones ◽

S. Kathikeyan

Keyword(s):

Power Factor ◽

High Frequency ◽

Single Phase ◽

Power Factor Correction ◽

Harmonic Distortion ◽

Supply System ◽

Unity Power Factor ◽

Current Harmonic ◽

High Frequency Transformer ◽

Bridge Rectifier

This paper deals with PFC-isolated Zeta converter fed LED drive to overcome the power factor problems. The proposed circuit topology consists of diode bridge rectifier and isolated Zeta converter with high frequency transformer. A single –phase supply is used to feed a DBR followed by a filter to avoid any switching ripple in DBR and the supply system. An isolated Zeta converter is operated to work under DCM mode. This combination of DBR and PFC converter is used to feed a LED drive. This converter is simulated in MATLAB platform. This converter provides better results such as unity power factor and less current harmonic distortion.

Download Full-text

Three-phase 15kVA UPS system with power factor correction and high frequency transformer isolation

2009 Brazilian Power Electronics Conference ◽

10.1109/cobep.2009.5347631 ◽

2009 ◽

Cited By ~ 1

Author(s):

Rene P. T. Bascope ◽

Carlos G. C. Branco ◽

Cicero M. T. Cruz ◽

Gilberto F. S. Filho ◽

Luiz D. S. Bezerra

Keyword(s):

Power Factor ◽

High Frequency ◽

Power Factor Correction ◽

High Frequency Transformer ◽

Three Phase

Download Full-text

A soft-switching mode rectifier with power factor correction and high frequency transformer link

IEEE Transactions on Power Electronics ◽

10.1109/63.849034 ◽

2000 ◽

Vol 15 (4) ◽

pp. 644-654 ◽

Cited By ~ 24

Author(s):

Chang-Ming Liaw ◽

Thin-Huo Chen

Keyword(s):

Power Factor ◽

High Frequency ◽

Power Factor Correction ◽

Soft Switching ◽

High Frequency Transformer ◽

Switching Mode

Download Full-text

Behaviour of a high-intensity discharge lamp fed by a high-frequency dimmable electronic ballast

Lighting Research and Technology ◽

10.1177/1477153516650234 ◽

2016 ◽

Vol 49 (2) ◽

pp. 277-284 ◽

Cited By ~ 2

Author(s):

A Chammam ◽

W Nsibi ◽

M Nejib Nehdi ◽

B Mrabet ◽

A Sellami

Keyword(s):

Power Factor ◽

High Intensity ◽

High Frequency ◽

Power Factor Correction ◽

Acoustic Resonance ◽

Operating Frequency ◽

Resonant Circuit ◽

Frequency Variation ◽

Luminous Efficacy ◽

Wide Range

The main advantages of high-frequency electronic ballasts for high-intensity discharge lamps are high luminous efficacy, small size, lightweight and longer lifetime. This is why high-intensity discharge lamps operating at high frequency are widely used. This paper proposes an approach for designing resonant circuit electronic ballasts controlled by frequency variation for high-intensity discharge lamps. The proposed technique including an AC/DC rectifier, a power factor correction circuit and a DC/AC half bridge inverter. These electronic ballasts offer a wide range of dimming controls and can avoid acoustic resonance. However, under dimming, the electric and photometric characteristics of the lamp change. In order to study these effects under the process of dimming, this work studies the lamp properties by varying both lamp power and operating frequency.

Download Full-text