| 基于巨磁致电阻电流检测机理的电流驱动同步整流器 |
| |
| 引用本文： | 张波,丘东元,黄志刚,唐志. 基于巨磁致电阻电流检测机理的电流驱动同步整流器[J]. 电子学报, 2007, 35(8): 1462-1466 |
| |
| 作者姓名： | 张波 丘东元 黄志刚 唐志 |
| |
| 作者单位： | 华南理工大学电力学院,广东广州,510640;艾默生网络能源有限公司,广东深圳,518057 |
| |
| 基金项目： | 国家自然科学基金，广东省自然科学基金 |
| |
| 摘 要： | 本文将一种基于巨磁致电阻(Giant Magneto Resistive--GMR)的电流检测技术应用于同步整流技术中.该技术可以克服传统电流驱动同步整流器中电流检测器件损耗较大、不能测直流、漏感大、不能工作于高频等缺点.本文内容包括GMR电流检测技术原理和性能分析,GMR电流检测电流驱动同步整流正激变换器的实验研究.研究结果表明,该变换器工作性能理想,在轻载情况下效率有较大幅度的提高,说明GMR是一种可以实际应用的电流检测技术.
|
| 关 键 词： | 巨磁致电阻 同步整流 电流驱动 空载效率 电流检测 |
| 文章编号： | 0372-2112（2007）08-1462-05 |
| 收稿时间： | 2006-07-31 |
| 修稿时间： | 2006-07-31 |
Current-Driven Synchronous Rectifier Based on GMR Current Sensing Technology |
| |
| ZHANG Bo,QIU Dong-yuan,HUANG Zhi-gang,TANG Zhi. Current-Driven Synchronous Rectifier Based on GMR Current Sensing Technology[J]. Acta Electronica Sinica, 2007, 35(8): 1462-1466 |
| |
| Authors: | ZHANG Bo QIU Dong-yuan HUANG Zhi-gang TANG Zhi |
| |
| Affiliation: | 1. School of Electric Power,South China University of Technology,Guangzhou,Guangdong 510641,China;2. Emerson Network Power Co.,Shenzhen,Guangdong 518057,China |
| |
| Abstract: | This paper applied Giant Magneto Resistive(GMR) current sensing method in a current-driven synchronous rectifier.Comparing with the conventional current sensors,GMR current sensor can overcome the drawbacks of large loss,no DC capability,large leakage inductance and low switching frequency.The current sensing theory of GMR current sensor was discussed and a current-driven synchronous Forward converter with GMR current sensor was provided.The experimental results show that the performance of the modified Forward converter is good and its efficiency at light load is improved. |
| |
| Keywords: | giant magneto resistive(GMR) synchronous rectifier current-driven no-load efficiency current sensing |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《电子学报》浏览原始摘要信息 |
|
点击此处可从《电子学报》下载免费的PDF全文 |
|
