A Two-Stage Isolated Converter without Intermediate Capacitor for Wide Voltage Range Applications

被引：0

作者：

Jia, Pengyu ^{[1
]}

Huang, Zehui ^{[1
]}

Hao, Yaozong ^{[1
]}

Chen, Qian ^{[2
]}

Fan, Shengwen ^{[1
]}

机构：

[1] North China Univ Technol, Dept Elect Engn, Beijing, Peoples R China

[2] State Grid Zhejiang Elect Power Corp, Elect Power Res Inst, Hangzhou, Zhejiang, Peoples R China

来源：

2019 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2019年

关键词：

LLC converter; cascaded topology; wide voltage range;

D O I：

10.1109/ecce.2019.8912214

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 presents an improved two-stage Three-Level Buck (TL-Buck) and LLC cascaded converter for wide input voltage range applications. With the three-level Buck structure as the pre-regulated stage, high voltage stress for the input switches can be alleviated. Compared with the traditional cascaded topology, the proposed topology removes the intermediate capacitance resulting in the front stage being equivalent to a current source. To verify the performance and design of the proposed converter, a 200W prototype is built, and preliminary experimental results are provided.

引用

页码：1315 / 1320

页数：6

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