An improved current injection network for three-phase high-power-factor rectifiers that apply the third harmonic current injection

Author

Pejovic, P. ; Janda, Zarko

Author_Institution

Fac. of Electr. Eng., Belgrade Univ.

Volume

47

Issue

2

fYear

2000

fDate

4/1/2000 12:00:00 AM

Firstpage

497

Lastpage

499

Abstract

A novel current injection network for low-harmonic rectifiers that apply the third harmonic current injection is proposed in this paper. The current injection network requires one inductor, two capacitors, and one 1:1 transformer with a voltampere rating of only 0.16% of the input power. The transformer is introduced to provide complete rejection of harmonic components of the injected currents at even triples of the line frequency, resulting in significant reduction of the input current total harmonic distortion (THD). Dependence of the input current THD on the current injection network Q factor is computed. The THD is shown to be in the range 4%<THD<5.125%. Analytically obtained results are experimentally verified on a 1.5 kW rectifier

Keywords

AC-DC power convertors; harmonic distortion; harmonics suppression; power capacitors; power conversion harmonics; power transformers; rectifying circuits; 1.5 kW; Q factor; THD; capacitors; current injection network improvement; harmonic components rejection; inductors; input current total harmonic distortion; third harmonic current injection; three-phase high-power-factor rectifiers; transformers; Capacitors; Computer networks; Frequency; Harmonic distortion; Inductors; Power conversion harmonics; Power system harmonics; Rectifiers; Resistors; Total harmonic distortion;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.836366

Filename

836366