降压DC/DC变换器的低温工作

Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95 Pub Date : 1995-03-05 DOI:10.1109/APEC.1995.469053

B. Ray, S. Gerber, Richard L. Patterson, I. T. Myers

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引用次数: 13

摘要

本文报道了采用市售元件设计的42/28 V、175 W、50 kHz PWM降压型DC/DC电源变换器的低温(77 K)工作。总的来说，与室温工作相比，功率转换器在77 K时的损耗降低了。在液氮温度下的满载效率为97%，而在室温下为95.8%。功率MOSFET的工作显著改善，而输出整流器的工作在低温下恶化。在77 K时，输出滤波器电感和电容的性能与室温相比没有明显变化。由于材料的电子、电气和热性能的改善，在低温下实现高密度和高效率的功率转换成为可能。

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Low-temperature operation of a buck DC/DC converter

Low-temperature (77 K) operation of a 42/28 V, 175 W, 50 kHz PWM buck DC/DC power converter designed with commercially available components is reported. Overall, the power converter losses decreased at 77 K compared to room temperature operation. A full-load efficiency of 97% was recorded at liquid-nitrogen temperature, compared to 95.8% at room temperature. Power MOSFET operation improved significantly whereas the output rectifier operation deteriorated at low-temperature. The performance of the output filter inductor and capacitor did not change significantly at 77 K compared to room temperature performance. It is possible to achieve high-density and high efficiency power conversion at low-temperatures due to improved electronic, electrical and thermal properties of materials.<>

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来源期刊

Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95

CiteScore

3.20

自引率

0.00%

发文量