• /  10
  • 下载费用: 19.90积分  

Using Self-Driven AC–DC Synchronous Rectifier as a Direct Replacement for Traditional Power Diode Rectifier

'Using Self-Driven AC–DC Synchronous Rectifier as a Direct Replacement for Traditional Power Diode Rectifier'
392IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 59, NO. 1, JANUARY 2012 Using Self-Driven AC–DC Synchronous Rectifi er as a Direct Replacement for Traditional Power Diode Rectifi er W. X. Zhong, S. Y. Hui, Fellow, IEEE, W. C. Ho, Member, IEEE, and Xun Liu, Member, IEEE Abstract—Synchronous rectifi cation has previously been adop- ted in switched-mode circuits for reducing the conduction losses particularly in high-frequency, low-voltage, and high-current ap- plications. This paper presents a generalized “self-driven” ac–dc synchronous rectifi cation technique that can be used even at mains frequency to develop an ac–dc synchronous rectifi er that behaves like a diode bridge but with much reduced conduction losses and without control integrated circuits. This generalized concept can be extended from single-phase to multiphase systems. Experiments based on 1- and 2-kW single-phase systems have been successfully conducted for capacitive, inductive, and resistive loads. Very signifi cant power loss reduction (over 50%) has been achieved in the rectifi cation stage at both 110- and 220-V ac mains operations. This patent-pending circuit can be regarded as a direct replacement of a general-purpose diode rectifi er. Due to the reduction of power loss, further reduction in the size and cost of the heat sink or thermal management for the power circuit becomes possible. Index Terms—Energy saving, mains-frequency synchronous rectifi ers (SRs), self-driven SRs (SDSRs). I. INTRODUCTION A S EARLY AS 1990 [1], synchronous rectifi ers (SRs) basedontheuseofpowerMOSFETstoreplacediodesfor reducing the conduction losses have been widely used in low- voltage high-current applications [1]–[16]. SR techniques are primarily applied to various versions of dc–dc converters such as buck converters [2], [3], fl yback and buck–boost converters [4], [5], half-bridge converters [6], [7], and LCC resonant converters [8], [9]. To reduce the cost of gate-drive circuits, self-driven techniques have been an active research topic in SRs [2], [7], [9], [10], although gate control integrated circuits for driving SRs are also commercially available [11]. Other Manuscript received March 12, 2010; revised July 20, 2010, September 24, 2010, and February 1, 2011; accepted March 14, 2011. Date of publication March 28, 2011; date of current version October 4, 2011. This work was supported by the Centre for Power Electronics, Department of Electronic Engineering, City University of Hong Kong, Kowloon, Hong Kong. W. X. Zhong and W. C. Ho are with the Centre for Power Electron- ics, Department of Electronic Engineering, City University of Hong Kong, Kowloon, Hong Kong (e-mail: wzhong3@student.cityu.edu.hk; wing.ho@ convenientpower.com). S. Y. Hui is with the Department of Electrical and Electronic Engineering, Imperial College London, SW7 2AZ London, U.K. and also with the Depart- ment of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong (e-mail: r.hui@imperial.a
关 键 词:
UsingSelf-DrivenAC–DCSynchronousRectifierasaDirectReplacementforTraditionalPowerDiodeRectifier
 天天文库所有资源均是用户自行上传分享,仅供网友学习交流,未经上传用户书面授权,请勿作他用。
关于本文
本文标题:Using Self-Driven AC–DC Synchronous Rectifier as a Direct Replacement for Traditional Power Diode Rectifier
链接地址: https://www.wenku365.com/p-40984898.html
关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服点击这里,给天天文库发消息,QQ:1290478887 - 联系我们

本站为“文档C2C交易模式”,即用户上传的文档直接卖给(下载)用户,本站只是中间服务平台,本站所有文档下载所得的收益归上传人(含作者)所有【成交的100%(原创)】。本站是网络服务平台方,若您的权利被侵害,侵权客服QQ:1290478887 欢迎举报。

1290478887@qq.com 2017-2027 https://www.wenku365.com 网站版权所有

粤ICP备19057495号 

收起
展开