Design of a single phase rectifier with switching on AC side for high power factor and low total harmonic distortion

A simple yet effective scheme for improving the power factor and waveshape of input current drawn by a single phase bridge rectifier is presented. A rectifier with filter capacitor draws current from the supply discontinuously, in short pulses. This introduces several problems including reduction of...

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Bibliographic Details
Published in2007 IEEE Region 5 Technical Conference pp. 289 - 292
Main Authors Khan, M.A., Pavel, A.A., Khan, M.R., Choudhury, M.A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2007
Subjects
Bridge circuits
Capacitors
Current supplies
Efficiency
Inductors
MOSFET circuits
Power factor
Power harmonic filters
Reactive power
Rectifier
Rectifiers
Switches
Total harmonic distortion
Total Harmonic Distortion (THD)
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ISBN142441279X
9781424412792
DOI10.1109/TPSD.2007.4380321

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Summary:A simple yet effective scheme for improving the power factor and waveshape of input current drawn by a single phase bridge rectifier is presented. A rectifier with filter capacitor draws current from the supply discontinuously, in short pulses. This introduces several problems including reduction of available power and increased loss. The scheme presented here uses a single MOSFET switch on the AC side to provide alternative path for the input current to flow and hence makes it continuous. The rectifier is connected to AC mains through a series combination of inductor and capacitor, which keeps the input current smooth and in-phase with the supply voltage. The simulated results reveal that the Total Harmonic Distortion (THD) of the scheme presented is below 2% with overall efficiency around 90%.
ISBN:142441279X
9781424412792
DOI:10.1109/TPSD.2007.4380321