Zero Voltage Switching Switched-Tank Modular Converter for Data Center Application
Zero Voltage Switching Switched-Tank Modular Converter for Data Center Application
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DOI：
10.1109/wipda46397.2019.8998894
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发表时间：
2019-10
期刊：
影响因子：
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通讯作者：
Mengxuan Wei;Yanchao Li;Ze Ni;Chengkun Liu;Dong Cao
中科院分区：
文献类型：
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作者：
Mengxuan Wei;Yanchao Li;Ze Ni;Chengkun Liu;Dong Cao
最近，用于48 V-12 V数据中心应用的采用零电流开关（ZCS）的开关储能转换器（STC）的效率已达到98.55%。然而，Coss损耗不被回收，并且其随着频率和电压而增加。本文介绍了一种全负载范围内实现零电压开关的开关储能模块化（STM）变换器。它可以消除Coss损失，进一步提高效率。与传统STC不同，STM模块化程度更高，更容易集成到高压应用中。此外，与传统STC中的大箝位电容相比，STM转换器具有更小的箝位电容。结果，可以实现更高的效率和功率密度。本文讨论了STM变换器的ZVS操作。此外，使用GaN和Si器件的效率和功率损耗的比较进行了分析。最后给出了基于一个硅样机的仿真和实验结果。
Recently, Switched-tank converter (STC) using zero current switching (ZCS) for 48 V-12 V data center application has reached 98.55% efficiency. However, the Coss loss is not recycled and it increases with frequency and voltage. This paper describes a switched-tank modular (STM) converter with zero voltage switching (ZVS) for all devices over full load range. It can eliminate Coss loss and further improve efficiency. Different from traditional STC, the STM is more modularized and much easier to be integrated into high voltage application. Besides, the STM converter has smaller clamping capacitance compared with large clamping capacitor in traditional STC. As a result, higher efficiency and power density can be achieved. In this paper, the ZVS operation for STM converter is discussed. Also, the efficiency and power loss comparison using GaN and Si devices is analyzed. The simulation and experiment results based on a Si prototype are presented.