具有准z源网络和有源开关电感的大升压比DC-DC变换器

2021 3rd International Conference on Smart Power & Internet Energy Systems (SPIES) Pub Date : 2021-09-25 DOI:10.1109/SPIES52282.2021.9633855

Lumeng Bai, Jiawei Zhao, Daolian Chen

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引用次数: 0

摘要

传统的DC-DC升压变换器升压能力有限，主开关器件可能承受较大的电压应力或电流应力。为满足高增益新能源发电的需要，提出了一种非隔离型直流直流升压变换器。该拓扑结构将传统的有源开关电感与准z源网络相结合，可以在不受占空比限制和开关应力影响的情况下提高变换器的电压增益。分析了稳态特性和工作原理，分析了功率损耗，并与其他参考文献进行了比较。在电力电子实验室设计了原型电路，在输入电压为20-30v，输出电压为200V的200W条件下，对变换器的性能进行了验证。验证了理论分析的有效性和优越性。

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Large Boost Ratio DC-DC Converter with Quasi-Z Source Network and Active Switched Inductor

The boost capability of the traditional DC-DC boost converter is limited, and the main switch device may bear higher voltage stress or current stress. A non-isolated DCDC step-up converter is proposed to meet the needs of high-gain new energy power generation. The topology combines the traditional active switched inductor with a Quasi-Z source network, which can improve the converter’s voltage gain without the limitation of duty cycle and the influence of switching stress. The steady-state characteristics and working principle are analyzed, and then the power loss is analyzed and compared with other references. The prototype circuit is designed in the power electronics laboratory, and the performance of the converter is verified under the condition of 200W with the input voltage of 20-30v and the output voltage of 200V. The validity and advantages of the theoretical analysis are verified.

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2021 3rd International Conference on Smart Power & Internet Energy Systems (SPIES)

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