A 25kW Silicon Carbide 3kV/540V Series-Resonant Converter for Electric Aircraft Systems
A 25kW Silicon Carbide 3kV/540V Series-Resonant Converter for Electric Aircraft Systems
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DOI：
10.1109/apec42165.2021.9487328
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发表时间：
2021-06
期刊：
影响因子：
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通讯作者：
Xinyuan Du;Fei Diao;Zhe Zhao;Yue Zhao
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文献类型：
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作者：
Xinyuan Du;Fei Diao;Zhe Zhao;Yue Zhao
在这项工作中，提出了一种 25 kW 全碳化硅 (SiC) 串联谐振转换器 (SRC) 设计，可为未来电动飞机应用实现从 3kV 到 540V (±270V) 的单级直流到直流转换。拟议的 SRC 由初级侧使用 3.3kV 分立式 SiC MOSFET 的三级中性点钳位 (NPC) 转换器、次级侧使用 900V SiC MOSFET 模块的 H 桥转换器以及高频 (HF) 变压器组成。介绍了 SRC 功率级和高频变压器的详细设计方法。特别是，在变压器设计中解决了冷却系统的复杂性和功率密度需求之间的权衡，从而产生了新颖的多层绕组布局。为了验证所提出的 SRC 设计的有效性，开发了转换器原型并进行了全面的实验研究。
In this work, a 25 kW all silicon carbide (SiC) series-resonant converter (SRC) design is proposed to enable a single stage dc to dc conversion from 3kV to 540V (±270V) for future electric aircraft applications. The proposed SRC consists of a 3-level neutral-point-clamped (NPC) converter using 3.3kV discrete SiC MOSFETs on the primary side, a H-bridge converter using 900V SiC MOSFET modules on the secondary side and a high frequency (HF) transformer. The detailed design methods for the SRC power stage and the HF transformer are presented. Especially, a tradeoff between the complexity for the cooling system and the need for power density is addressed in the transformer design, leading to a novel multi-layer winding layout. To validate the effectiveness of the proposed SRC design, a converter prototype has been developed and comprehensive experimental studies are performed.