A novel method for elimination of line-current harmonics in single-stage PFC switching regulators

被引：38

作者：

Chow, MHL ^{[1
]}

Siu, KW ^{[1
]}

Tse, CK ^{[1
]}

Lee, YS ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Elect Engn, Hong Kong, Hong Kong

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 1998年 / 13卷 / 01期

关键词：

control; power factor correction; switch-mode power supplies;

D O I：

10.1109/63.654961

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper studies a particular single-stage power-factor-correction (PFC) switching regulator employing a discontinuous-conduction-mode (DCM) boost-input cell and a continuous-current-mode (CCM) forward output cell, Although this single-stage PFC regulator can provide a reasonably high power factor when its PFC stage is operating in discontinuous mode, substantial reduction in line-current harmonics is possible by applying a suitable frequency-modulation scheme. This paper derives a frequency-modulation scheme and proposes a practical implementation using a simple translinear analog circuit, A quantitative analysis on the total harmonics distortion (THD) of the line current when the circuit is subject to a Limited range of frequency variation is presented along with some considerations for practical design. Experimental data obtained from a prototype confirms the effectiveness of the proposed frequency-modulation scheme. The proposed analog translinear circuit allows custom integrated circuit (IC) implementation, making it a viable low-cost solution to the elimination of line-current harmonics in switching regulators.

引用

页码：75 / 83

页数：9