A Coupled-Inductor Interleaved LLC Resonant Converter for Wide Operation Range

被引：3
|
作者：
Zhou, Qianfan [1 ]
Liu, Yang [1 ]
Li, Zongjian [1 ]
He, Zhixing [1 ]
机构：
[1] Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Peoples R China
来源：
ENERGIES | 2022年 / 15卷 / 01期
基金：
中国国家自然科学基金;
关键词：
interleaved; coupled-inductor; LLC resonant; fixed-frequency PWM; wide operation range; DC-DC CONVERTER; INPUT VOLTAGE;
D O I：
10.3390/en15010315
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：
In this paper, a coupled-inductor interleaved LLC resonant converter (CI-ILLC) was proposed, which can achieve extensive operation range applications by multiplexing inductors and switches. In this proposed CI-ILLC, the coupled-inductor not only serves as a filter inductor but also plays the role of transformer to improve the power density. By changing the modulation methods, the proposed converter can work at three modes for a wide operation range, namely high gain (HG) mode, medium gain (MG) mode, and low gain (LG) mode. Moreover, the interleaved structure greatly reduces the current ripple and current stress of switches. Besides, in HG and MG modes, all switches can realize zero-voltage switching, with high energy transmission efficiency. Finally, the simulation and experiment results of the prototype with 120-200 V input and 50-200 V output are presented to verify the viability of the proposed converter.
引用
收藏
页数：21
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