Passive shaping of line current waveform by converter with alternating of parallel and series resonance in AC-DC switch mode power supplies

Author

Janson, Kuno ; Bolgov, Viktor ; Kütt, Lauri ; Kallaste, Ants ; Mõlder, Heigo

Author_Institution

Dept. Fundamentals of Electr. Eng. & Electr. Machines, Tallinn Univ. of Technol., Tallinn

fYear

2008

fDate

Aug. 31 2008-Sept. 3 2008

Firstpage

77

Lastpage

80

Abstract

The distortion of an AC-DC converter current could be corrected by use of a fast-controlled impedance-matching transformer on a basis of a non-conducting converter with alternating of parallel and series resonance. The basics of the converter performance and operation are described. Changes in the converter input impedance can be eliminated by means of the varying transformation ratio. It is found that the current waveform can be made sinusoidal if the instant power passing through the converter is proportional to the squared instant value of the mains voltage and/or the output voltage and current of the converter are in inverse proportion.

Keywords

AC-DC power convertors; power supplies to apparatus; power transformers; AC-DC converter; AC-DC switch mode power supplies; fast-controlled impedance-matching transformer; line current waveform; resonance; Analog-digital conversion; Frequency conversion; Impedance; Inductors; Inverters; Power supplies; Resonance; Switches; Switching converters; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2008. ICECS 2008. 15th IEEE International Conference on

Conference_Location

St. Julien´s

Print_ISBN

978-1-4244-2181-7

Electronic_ISBN

978-1-4244-2182-4

Type

conf

DOI

10.1109/ICECS.2008.4674795

Filename

4674795