MATLAB Simulation And Analysis of Bridgeless PFC Boost Converter
CONTENTS
1.1
1.2
2.1
2.2
2.3
2.4
Introduction
Objective
Boost converter
Conventional PFC rectifier
Bridgeless PFC rectifier
Closed loop controlled Bridgeless PFC rectifier
RESULT AND DISCUSSION
3.0
Simulation and Result
CONCLUSION
REFERENCES
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MATLAB Simulation And Analysis of Bridgeless PFC Boost Converter
1.1 Introduction
Power-factor correction has been an active research topic in power electronics, and
significant efforts have been made on the developments of the PFC converters. Recently,
in an effort to improve the efficiency of the PFC rectifiers bridgeless PFC circuit’s are
being used. The bridgeless PFC topologies, also referred as dual boost PFC rectifiers,
may reduce the conduction loss by reducing the number of semiconductor components in
the conduction path. The simulation of conventional PFC rectifier, bridgeless PFC boost
rectifier is done using matlab and simulated waveforms are shown.
1.2 Objective of Project
The objective of the study are:
1. To design a boost converter and simulate conventional PFC rectifier circuit.
2. To simulate bridgeless PFC rectifier instead of conventional PFC rectifier circuit.
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MATLAB Simulation And Analysis of Bridgeless PFC Boost Converter
2.1 Boost converter
Vin = 26V
Vout = 48V
D = 0.5
Switching frequency = 40Khz
L = 100uH
C = 6800uF
FIG 1: BOOST CONVERTER CIRCUIT
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MATLAB Simulation And Analysis of Bridgeless PFC Boost Converter
2.2 Conventional PFC rectifier
FIG 2:CONVENTIONAL PFC RECTIFIER
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MATLAB Simulation And Analysis of Bridgeless PFC Boost Converter
FIG 3 OUTPUT CURRENT AND OUTPUT VOLTAGE WAVEFORMS
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MATLAB Simulation And Analysis of Bridgeless PFC Boost Converter
FIG 4 AC INPUT CURRENT AND VOLTAGE WAVEFORMS.
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MATLAB Simulation And Analysis of Bridgeless PFC Boost Converter
2.3 Bridgeless PFC Rectifier
FIG 5 BRIDGELESS PFC RECTIFIER
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MATLAB Simulation And Analysis of Bridgeless PFC Boost Converter
FIG 6 AC INPUT VOLTAGE AND CURRENT WAVEFORM
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MATLAB Simulation And Analysis of Bridgeless PFC Boost Converter
2.4 Closed loop controlled Bridgeless PFC Rectifier
FIG 7: Closed loop controlled Bridgeless PFC Rectifier
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MATLAB Simulation And Analysis of Bridgeless PFC Boost Converter
FIG 8 AC INPUT VOLTAGE AND CURRENT WAVEFORMS
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MATLAB Simulation And Analysis of Bridgeless PFC Boost Converter
FIG 9 OUTPUT VOLTAGE WAVEFORM
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MATLAB Simulation And Analysis of Bridgeless PFC Boost Converter
3.0 Simulation and Result
Sl No
Method
P.F
1
Conventional PFC Rectifier
Low
2
Bridgeless PFC Rectifier
Improved
From the simulated waveforms we can see the power-factor has been improved in
Bridgeless PFC Rectifier and ripple at the output voltage has reduced in closed loop
control. The number of conducting semiconductor switches has been reduced as a
result switching losses are also reduced in the Bridgeless PFC Rectifier.
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MATLAB Simulation And Analysis of Bridgeless PFC Boost Converter
CONCLUSION
Bridgeless PFC Converter is modeled and simulated using Matlab. The simulation studies
indicate the power factor is nearly unity by employing the modified boost converter. This
converter has advantages like reduced hardware, High performance and improved power factor.
This work has covered the simulation of open loop and closed loop controlled PFC converter.
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MATLAB Simulation And Analysis of Bridgeless PFC Boost Converter
REFERENCES
1. J. C. Salmon, “Circuit topologies for single phase voltage-doubler boost rectifiers”, in
Proc.IEEE Applied Power Electronics Conf., Mar. 1992, pp. 549-556.
2. D. Tollik and A. Pietkiewicz, “Comparative analysis of 1-phase active power factor
correction topologies”, in Proc. Int. Telecommunication Energy Conf., Oct. 1992, pp.
517-523.
3. P. N. Enjeti and R. Martinez, “A high performance single phase AC to DC rectifier with
input power factor correction”, in Proc.IEEE Applied Power Electronics Conf.,
Mar.1993, pp. 190-195.
4. A. F. Souza and I. Barbi, “A new ZCS quasi-resonant unity power factor rectifier with
reduced conduction losses”, in Proc. IEEE Power Electronics Specialists Conf., Jun.
1995, pp.1171-1177.
5. A. F. Souza and I. Barbi, “A new ZVS-PWM unity power factor rectifier with reduced
conduction losses”, IEEE Trans. Power Electro., vol. 10, no 6, pp. 746-752, Nov. 1995.
6. R. Martinez and P. N. Enjeti, “A high performance single phase AC to DC rectifier with
input power factor correction”, IEEE Trans. Power Electron., vol. 11, no. 2, pp.311-317,
Mar. 1996.
7. A. F. Souza and I. Barbi, “A new ZVS semi resonant high power factor rectifier with
reduced conduction losses”, IEEE Trans. Ind. Electron., vol.46, no. 1, pp. 82-90, Feb.
1999.
8. J.-W. Lim and B.-H. Kwon, “A power-factor controller for single phase PWM rectifier”
IEEE Trans. Ind. Electron., vol. 46, no. 5, pp.1035–1037, Oct. 1999
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