An Optimized DPS Control Strategy for LCL Resonant Dual Active Bridge Converter for Wide Voltage Conversion Ratio
An Optimized DPS Control Strategy for LCL Resonant Dual Active Bridge Converter for Wide Voltage Conversion Ratio
复制标题
宽电压转换比LCL谐振双有源桥变换器的优化DPS控制策略
DOI：
10.1109/jestie.2021.3088383
复制
发表时间：
2021-06
期刊：
影响因子：
--
通讯作者：
Li Molin
中科院分区：
文献类型：
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作者：
Guo Zhiqiang;Li Molin
针对LCL谐振双有源桥式变换器提出了一种改进的DPS（IDPS）控制策略。由于LCL谐振回路的存在，利用傅里叶变换分析了变换器的工作模式。根据关键波形的基波分量，推导了不同工作模式下零电压开关的条件。分析了导通损耗与负载功率的关系。为了实现具有低传导损耗和正向和反向功率流之间的无缝过渡的ZVS，提出了IDPS调制方案。该控制策略可以覆盖所有的负载功率。与增强型DPS相比，IDPS的传导损耗更低。最后，一个1千瓦的实验样机已经建成，以验证IDPS控制策略的有效性。
This article presents an improved DPS (IDPS) control strategy for LCL resonant dual active bridge converter. Due to the LCL resonant tank, the converter's working modes are analyzed by using the Fourier transform. According to the fundamental harmonics of the key waveforms, the condition of zero-voltage switching (ZVS) in different working modes is derived. The relationship between the conduction loss and load power is analyzed. To achieve ZVS with low conduction loss and seamless transitions between the forward and reverse power flow, an IDPS modulation scheme is proposed. The control strategy can cover all the load power. The conduction loss in the IDPS is compared with the enhanced DPS, which illustrates the lower conduction loss. Finally, a 1-kW experimental prototype has been built to verify the effectiveness of the IDPS control strategy.