On/Off Control of Boost PFC Converters to Improve Light-Load Efficiency in Paralleled Power Supply Units for Servers

被引：46

作者：

Kim, Hyoung-Suk ^{[1
]}

Kim, Jae-Kuk ^{[2
]}

Park, Ki-Bum ^{[3
]}

Seong, Hyun-Wook ^{[4
]}

Moon, Gun-Woo ^{[1
]}

Youn, Myung-Joong ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South Korea

[2] Samsung Electromech Co Ltd, Power R&D Team, Suwon 443743, South Korea

[3] ABB Corp Res Ctr, CH-5405 Baden, Switzerland

[4] Hyundai Motor Co, Hyundai Kia R&D Ctr, Hwasung 445706, South Korea

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2014年 / 61卷 / 03期

关键词：

Boost converter; light-load efficiency; on/off control; paralleled power supply units (PSUs); power factor correction (PFC); servers; RESONANT CONVERTER; SYSTEMS; RANGE;

D O I：

10.1109/TIE.2013.2258301

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper proposes an on/off control of boost power factor correction (PFC) converters to improve the light-load efficiency in paralleled power supply units (PSUs) for servers. The proposed scheme operates the PFC stages of two paralleled PSUs alternately during one cycle of a 60-Hz ac input only at light loads. This improves the light-load efficiency without deteriorating the heavy-load efficiency by reducing load-independent losses such as capacitive turn-on and core losses. In addition, the proposed scheme alleviates the harmonic distortion by reducing the discontinuous conduction mode region. Experimental results from 1.6-kW PFC boost converters are shown to verify the proposed work.

引用

页码：1235 / 1242

页数：8

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