Current Balance Method for the Two-phase Interleaved LLC-RDCX with Parallel PWM Output Regulation

被引：0

作者：

Chen, Hui ^{[1
]}

Wu, Xinke ^{[1
]}

Peng, Fangzheng ^{[1
]}

Qian, Zhaoming ^{[1
]}

Hu, Changsheng ^{[1
]}

机构：

[1] Zhejiang Univ, Coll Elect Engn, Hangzhou 310027, Zhejiang, Peoples R China

来源：

2014 INTERNATIONAL ELECTRONICS AND APPLICATION CONFERENCE AND EXPOSITION (PEAC) | 2014年

基金：

中国国家自然科学基金;

关键词：

interleaved; LLC-RDCX; current balance; partial energy regulation; RESONANT CONVERTER;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The interleaving technique is necessary for multiphase LLC resonant converters in high output current high power level applications. But the conventional frequency-controlled LLC converters will lose current sharing if all the phases are operating at the same switching frequency. In this paper, a two-phase interleaved LLC-Regulated DCX (LLC-RDCX) with parallel PWM output regulation is presented to solve the load-sharing problem. Two LLC-RDCXs operate at the same constant switching frequency. The current sharing of two phases is achieved by the PWM regulations of the assistant DC-DC stages. What's more, only partial energy is transferred through the assistant transformer, the high efficiency is also guaranteed. A 1kW, two-phase interleaved LLC-RDCX prototype is built to verify the feasibility and demonstrate the advantages.

引用

页码：136 / 141

页数：6

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