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首页> 外文期刊>Journal of energy and power engineering >Multi-converter Approach to Higher Power Density DC-DC Converter for 380 V DC Distribution System
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Multi-converter Approach to Higher Power Density DC-DC Converter for 380 V DC Distribution System

机译：用于380 V直流配电系统的高功率密度DC-DC转换器的多转换器方法

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摘要

Multi-converter approach based on the series and parallel connection topology of modular power converters has been proposed to realize higher power density DC-DC converter. The availability of the proposed approach has been verified through the design consideration and the experiment The design consideration for two DC-DC converters has been carried out by utilizing the power converter exact loss simulator, and the design parameters to maximize their power densities have been extracted taking the trade-off between the conversion efficiency and the power density into account. The prototypes of a 2,400 W, 256-384 V boost chopper using SiC-MOSFETs and a 300 W, 32-48 V GaN-FETs boost chopper have been also developed based on the design. The SiC chopper achieved the efficiency of 97.8% and the power density of 12.8 W/cm~3, and the GaN chopper accomplished 98.9% and 18.6 W/cm~3 in the experiment. These results show the validity of the design and the availability of the proposed approach. The multi-converter approach enables the cost reduction of the modular power converters, and contributes to realizing the widespread use of power electronics converters in the future 380 V DC distribution system.
机译：为了实现更高功率密度的DC-DC变换器，提出了一种基于模块化功率变换器的串联和并联拓扑的多变换器方法。通过设计考虑和实验验证了所提出方法的可用性。利用功率转换器精确损耗模拟器对两个DC-DC转换器进行了设计考虑，并提取了可最大化其功率密度的设计参数。考虑到转换效率和功率密度之间的权衡。基于该设计，还开发了使用SiC-MOSFET的2,400 W，256-384 V升压斩波器和300 W，32-48 V GaN-FET升压斩波器的原型。实验中，SiC斩波器的效率为97.8％，功率密度为12.8 W / cm〜3，GaN斩波器的效率为98.9％，功率密度为18.6 W / cm〜3。这些结果表明了设计的有效性和所提出方法的可用性。多转换器方法可降低模块化功率转换器的成本，并有助于实现功率电子转换器在未来380 V DC配电系统中的广泛使用。

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