A Modified SEPIC Converter for High-Power-Factor Rectifier and Universal Input Voltage Applications

2010 ◽  
Vol 25 (2) ◽  
pp. 310-321 ◽  
Author(s):  
P.F. de Melo ◽  
R. Gules ◽  
E.F.R. Romaneli ◽  
R.C. Annunziato
Keyword(s):  
Power Factor ◽  
High Power ◽  
Input Voltage ◽  
High Power Factor

Digital Controller for Single-Phase DCM Boost PFC Converter with High Power Factor over Wide Input Voltage and Load Range

2014 ◽  
Vol E97.C (4) ◽  
pp. 377-385 ◽  
Author(s):  
Daying SUN ◽  
Weifeng SUN ◽  
Qing WANG ◽  
Miao YANG ◽  
Shen XU ◽  
...  
Keyword(s):  
Power Factor ◽  
High Power ◽  
Single Phase ◽  
Input Voltage ◽  
Digital Controller ◽  
Load Range ◽  
High Power Factor ◽  
Boost Pfc Converter

90W Off-Line High Power Factor Correction Module Design

2014 ◽  
Vol 599-601 ◽  
pp. 212-215
Author(s):  
Ying Liu
Keyword(s):  
Power Factor ◽  
High Power ◽  
Input Voltage ◽  
Heavy Load ◽  
Flyback Converter ◽  
Module Design ◽  
High Power Factor ◽  
Input Range ◽  
Standby Power ◽  
Current Point

The design is based on Onsemi power management chip NCP1652, in the input range of voltage 85V~265V, to achieve of 19V 90W off-line high power factor output. Using the NCP1652 double working mode, comparing with a single stage flyback converter, when it works in light/heavy load conditions, the circuit can still have a stable output and a high PF by controlling the circuit working in the CCM/DCM mode. Where, Input voltage: 110V, Output: XV; Input voltage 220V, Output: XV; Input voltage: 110V, Output: XV. Under-Voltage Point: 16V; Over-Voltage Point: 23V; Over-Current Point: 5A; heavy loaded with 1s from the start, the standby power consumption < 1W. Key words:high PFC; NCP1652; flyback converter; off-line

EVALUATION OF THE CLASS E AMPLIFIER WITH TWO CURRENT SOURCES USED AS A HIGH-POWER-FACTOR ELECTRONIC BALLAST FOR COMPACT FLUORESCENT LAMPS

2004 ◽  
Vol 13 (03) ◽  
pp. 631-649
Author(s):  
M. PONCE ◽  
J. ARAU ◽  
J. M. ALONSO
Keyword(s):  
Power Factor ◽  
High Power ◽  
Input Voltage ◽  
Design Guidelines ◽  
Electronic Ballast ◽  
Zero Voltage Switching ◽  
Fluorescent Lamps ◽  
High Power Factor ◽  
Compact Fluorescent Lamp ◽  
Class E

In this paper a novel class E amplifier with two current sources used to implement high-power-factor electronic ballast for fluorescent lamps is presented and evaluated. The circuit is based on the class E amplifier with two current sources, one of them was implemented using the main input voltage and the other by means of a bulk capacitor charged from the resonant tank of the class E amplifier. This topology presents a high power factor and low current crest factor and only uses one switch with zero voltage switching. Design guidelines are presented and a 300-kHz electronic ballast for a 32-W compact fluorescent lamp was designed and tested.

High Power Factor Based Novel Design of Sodium Lamps

2010 ◽  
Vol 4 (2) ◽  
pp. 1-6
Author(s):  
S. Sankar ◽  
◽  
G. Gokula Krishnan ◽  
Keyword(s):  
Power Factor ◽  
High Power ◽  
High Power Factor ◽  
Novel Design

scholarly journals A Novel Single-Switch Single-Stage LED Driver with Power Factor Correction and Current Balancing Capability

Electronics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1340
Author(s):  
Yih-Her Yan ◽  
Hung-Liang Cheng ◽  
Chun-An Cheng ◽  
Yong-Nong Chang ◽  
Zong-Xun Wu
Keyword(s):  
Power Factor ◽  
High Power ◽  
Pulse Width Modulation ◽  
Power Factor Correction ◽  
Harmonic Distortion ◽  
Boost Converter ◽  
Single Stage ◽  
Led Driver ◽  
Flyback Converter ◽  
High Power Factor

A novel single-switch single-stage high power factor LED driver is proposed by integrating a flyback converter, a buck–boost converter and a current balance circuit. Only an active switch and a corresponding control circuit are used. The LED power can be adjusted by the control scheme of pulse–width modulation (PWM). The flyback converter performs the function of power factor correction (PFC), which is operated at discontinuous-current mode (DCM) to achieve unity power factor and low total current harmonic distortion (THDi). The buck–boost converter regulates the dc-link voltage to obtain smooth dc voltage for the LED. The current–balance circuit applies the principle of ampere-second balance of capacitors to obtain equal current in each LED string. The steady-state analyses for different operation modes is provided, and the mathematical equations for designing component parameters are conducted. Finally, a 90-W prototype circuit with three LED strings was built and tested. Experimental results show that the current in each LED string is indeed consistent. High power factor and low THDi can be achieved. LED power is regulated from 100% to 25% rated power. Satisfactory performance has proved the feasibility of this circuit.

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