| 引用本文: | 邾玢鑫,周丽娟,赵孟浩,等.一种可拓展双输入高增益DC/DC变换器[J].电力系统保护与控制,2024,52(11):148-158.[点击复制] |
| ZHU Binxin,ZHOU Lijuan,ZHAO Menghao,et al.A scalable dual-input high step-up DC/DC converter[J].Power System Protection and Control,2024,52(11):148-158[点击复制] |
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| 摘要: |
| 针对光伏发电系统中光伏电池板集成汇流的需求，提出了一种可拓展双输入高增益DC/DC变换器。该变换器采用了一种新型拓扑结构，可在实现输入输出电压高增益变换的同时降低了开关器件的电压应力。此外，所提变换器还具有可拓展性，可以根据不同的光伏电池板数量和输出电压要求对端口进行扩展，从而降低系统的复杂性和成本。首先详细介绍了所提变换器的拓扑结构，并推导出变换器在不同工作模态下的运行原理。然后，对该变换器的增益特性、开关器件的电压和电流应力、关键器件的参数选择和损耗计算等方面进行了深入的理论分析。最后，搭建了一台输出功率为1 kW的实验样机，并进行了实验测试。实验结果验证了所提变换器理论分析的正确性和可行性。 |
| 关键词: 光伏发电 双输入 高增益 DC/DC变换器 |
| DOI：10.19783/j.cnki.pspc.231098 |
| 投稿时间：2023-08-25修订日期：2024-02-24 |
| 基金项目:国家自然科学基金项目资助(51707103)；广西自治区重点研发计划项目资助(2022AB05028) |
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| A scalable dual-input high step-up DC/DC converter |
| ZHU Binxin,ZHOU Lijuan,ZHAO Menghao,WANG Kaihong,YANG Yujin |
| (China Three Gorges University, College of Electrical Engineering & New Energy (Hubei Provincial Engineering
Technology Research Center for Intelligent Energy Technology), Yichang 443002, China) |
| Abstract: |
| This paper proposes a scalable dual-input high-gain DC/DC converter to meet the needs of photovoltaic panel integrated confluence in photovoltaic power generation systems. The converter adopts a novel topological structure, one which can achieve high-gain conversion of input and output voltages while reducing the voltage stress of the switching device. In addition, the proposed converter has scalability, which can extend the ports according to the number of photovoltaic cell panels and output voltage requirements, thereby reducing the complexity and cost of the system. This paper first introduces the topological structure of the proposed converter in detail, and deduces its operating principle in different operating modes. Then it conducts an in-depth theoretical analysis of the gain characteristics of the converter, the voltage and current stress of the switching devices, the parameter selection of key devices, and loss calculation. Finally, an experimental prototype with an output power of 1 kW is built and tested. The experimental results verify the correctness and feasibility of the theoretical analysis of the proposed converter. |
| Key words: PV power generation dual-input high gain DC/DC converter |
