A new single-stage converter for improving THD

Author

Choi, Nam Y. ; Lee, Chi H.

Author_Institution

Dept. of Electron. Eng., Uiduk Univ., South Korea

Volume

2

fYear

2003

fDate

17-20 Nov. 2003

Firstpage

1476

Abstract

A simple single-stage converter for improving THD is proposed in this paper. The proposed topology combines an additional inductor for boosting and valley-fill rectifier that can do DC-DC conversion and PFC simultaneously. In the proposed circuit, a shape of input current is related to the duty cycle of PWM. The boosting inductor can achieve THD improving. The operation modes and THD of input current are analyzed as applied the boosting inductor, and the optimum value of boosting inductor is determined. A 100 W single-stage converter has been implemented and tested. Experimental results are presented to verify the validity of the proposed converter.

Keywords

DC-DC power convertors; harmonic distortion; power conversion harmonics; power factor correction; power inductors; pulse width modulation; rectifying circuits; 100 KW; DC-DC conversion; PFC; PWM duty cycle; THD; boosting inductor; single-stage converter; valley-fill rectifier; Boosting; Capacitors; DC-DC power converters; Diodes; Inductors; Pulse width modulation; Rectifiers; Rectifying circuits; Shape; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems, 2003. PEDS 2003. The Fifth International Conference on

Print_ISBN

0-7803-7885-7

Type

conf

DOI

10.1109/PEDS.2003.1283202

Filename

1283202