Isolated Multilevel Pulsating DC-Link Inverter for Cryogenic Temperature Power Conversion in Aircraft Applications

2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE) Pub Date : 2023-02-19 DOI:10.1109/CPERE56564.2023.10119600

Geonho Shin, M. Hassan, Y. Noge, M. Shoyama, G. M. Dousoky

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Abstract

Cryogenic cooling of a power electronics converter can considerably enhance the efficiency and power density of a power electronic conversion system utilized in all-electric ships and aircraft applications. However, there is a scarcity of literature that explores the performance operation of power electronic converters at cryogenic temperatures. Moreover, the performance of input-side capacitors at cryogenic temperatures is mysterious. In this context, this paper proposes a high-frequency pulsating DClink inverter for capacitor-less isolated three-phase applications to be used in aircraft cryogenically cooled power converters. The system comprises a high-frequency isolated DC/DC dual active bridge (DAB) converter as a pulsating DC-link followed by an active neutral-point clamped (ANPC) multilevel inverter for the DC/AC conversion stage. The issue behind proposing such an inverter is presented, and then the operation and control strategy of this inverter topology have been demonstrated. Finally, simulation results confirming its operation have been evaluated.

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用于飞机低温功率转换的隔离多电平脉冲直流逆变器

电力电子转换器的低温冷却可以大大提高全电动船舶和飞机应用中电力电子转换系统的效率和功率密度。然而，关于电力电子变换器在低温下的性能运行的研究文献却很少。此外，输入侧电容器在低温下的性能是不可思议的。在这种情况下，本文提出了一种用于飞机低温冷却电源变换器的无电容隔离三相高频脉冲DClink逆变器。该系统包括一个高频隔离DC/DC双有源桥转换器(DAB)作为脉动DC链路，然后是一个有源中性点箝位(ANPC)多电平逆变器用于DC/AC转换阶段。提出了这种逆变器的问题，然后演示了这种逆变器拓扑的运行和控制策略。最后对仿真结果进行了验证。

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2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE)

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