Novel Capacitor-Isolated Power Converter

被引：0

作者：

Zhu, Jingpeng ^{[1
]}

Xu, Ming ^{[1
]}

Sun, Julu ^{[1
]}

Wang, Chuanyun ^{[1
]}

机构：

[1] FSP Powerland Technol Inc, Nanjing 210042, Peoples R China

来源：

2010 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION | 2010年

关键词：

Touch current; leakage current; isolation; safety capacitor; resonance;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This paper presented a novel power conversion method of realizing the galvanic isolation by dual safety capacitors (Y-cap) instead of conventional transformer. With limited capacitance of the Y capacitor, series resonant is proposed to achieve the power transfer. The basic concept is to control the power path impedance, which blocks the dominant low-frequency part of touch current and let the high-frequency power flow freely. Conceptual analysis, simulation and design considerations are mentioned in this paper. An 85W AC/AC prototype is designed and verified to substitute the isolation transformer of a CCFL LCD TV backlight system. Compared with the conventional transformer isolation, the new method is proved to meet the function and safety requirements of its specification while has higher efficiency and smaller size.

引用

页码：1824 / 1829

页数：6

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