Analysis and design of two-phase interleaved LLC resonant converter considering load sharing
Analysis and design of two-phase interleaved LLC resonant converter considering load sharing
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DOI：
10.1109/ecce.2009.5316291
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发表时间：
2009-11
期刊：
影响因子：
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通讯作者：
Bong-chul Kim;Ki-Bum Park;G. Moon
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文献类型：
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作者：
Bong-chul Kim;Ki-Bum Park;G. Moon
最近，LLC系列谐振转换器（LLC-SRC）被广泛应用于许多应用，因为它比其他电源转换器具有许多优点。然而，这种拓扑结构很难应用于高电流应用，因为输出电容器上的电流纹波应力变得非常高。然而，采用交错技术可以大大减少输出电流纹波。然而，为了确保输出均流，多相交错式 LLC-SRC 导致谐振回路的设计困难，谐振回路由磁化电感 (LM)、谐振电感 (LR) 和谐振电容 (CR) 组成。本文提出了确保多相交错 LLC-SRC 输出电流共享的设计考虑。为了验证所提出的设计考虑，我们使用 480W 原型机进行了实验室实验并进行了讨论。
Recently, the LLC series resonant converter (LLC-SRC) is widely used for many applications because it has many advantages over other power converters. However, it is difficult to apply this topology to high current applications because the current ripple stress on the output capacitor becomes severely high. Nevertheless, it is possible to reduce the output current ripple drastically as employing the interleaved technique. However, to ensure output current sharing, multiphase interleaved LLC-SRC causes design difficulty of resonant tanks, which consists of magnetizing inductance (LM), resonant inductance (LR), and resonant capacitance (CR). In this paper, design consideration to ensure output current sharing of multiphase interleaved LLC-SRC is proposed. In order to verify proposed design consideration, the laboratory experiments are executed and discussed with a 480W prototype.