A Novel Three-level Phase-Shift Modulation for Serial Half Bridge LLC Resonant Converter

被引：9
|
作者：
Zhang, Chi [1 ]
Barbosa, Peter [1 ]
Shen, Zhiyu [1 ]
Wang, Rudy [1 ]
机构：
[1] Delta Elect Amer Ltd, Milan Power Elect Lab, Res Triangle Pk, NC 27709 USA
来源：
2021 THIRTY-SIXTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2021) | 2021年
关键词：
LLC; resonant converter; three-level; phase-shift; modulation; DC-DC CONVERTER; VOLTAGE;
D O I：
10.1109/APEC42165.2021.9487111
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 novel three-level phase-shift modulation is proposed for serial half bridge (SHB) LLC resonant converter. The proposed modulation is capable of balancing current stress for all switches to realize balanced thermal stress and their longer lifetime. The operation principle of the proposed modulation strategy is presented and analyzed in detail. ZVS conditions are discussed in different operation modes to ensure high efficiency operation in the entire load range. In addition, the proposed three-level phase-shift modulation provides additional gain range to conventional two level modulations with variable switching frequency control so that very wide output/input voltage range can be achieved. The performance of the proposed modulation is experimentally verified on a 7.5 kW SHB LLC DC/DC converter prototype.
引用
收藏
页码：355 / 362
页数：8
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