Design of a 200 kW Medium-Frequency Transformer (MFT) With High Insulation Capability
Design of a 200 kW Medium-Frequency Transformer (MFT) With High Insulation Capability
复制标题
200kW高绝缘能力中频变压器（MFT）的设计
DOI：
10.1109/ecce44975.2020.9235985
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
A. Huang
中科院分区：
文献类型：
--
作者：
Zhicheng Guo;Soumik Sen;S. Rajendran;Qingyun Huang;Xianyong Feng;A. Huang
介绍了一种基于低损耗磁芯（FINEMET® FT-3 TL）的200 kW中频Transformer（MFT）的设计。采用平行同心绕组结构，提高载流能力，降低漏感。基于平行同心绕组概念，进一步提出了一种具有双层3D打印线轴的新型绝缘结构。开发的MFT实现了高于19 kW/L的功率密度。电气绝缘系统在交流峰值14 kV电压和直流25 kV电压下进行测试。此外，局部放电测试在AC 8.5kV峰值电压下进行，以确保无局部放电（PD）设计。最后，MFT应用于中压固态Transformer（SST），以验证设计。
This paper presents the design of a 200-kW medium-frequency transformer (MFT) based on low loss magnetic core (FINEMET® FT-3TL). Parallel-concentric winding structure is utilized to increase the current carrying capability and reduce the leakage inductance. Based on the parallel-concentric winding concept, a novel insulation structure with two-layer 3D printed bobbins is further proposed. The developed MFT achieves a power density higher than 19 kW/L. The electrical insulation system is tested at AC peak 14 kV voltage and DC 25kV voltage. In addition, the partial discharge test is conducted at AC 8.5kV peak voltage to ensure a partial discharge (PD)-free design. Finally, the MFT is applied to a medium voltage solid-state transformer (SST) to verify the design.