Investigation of Thermal Distribution in Cryogenically Cooled Inverter for HTS Motor

IF 1.8 3区物理与天体物理 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Applied Superconductivity Pub Date : 2026-08-01 Epub Date: 2026-04-03 DOI:10.1109/TASC.2026.3680465

Yuchen Wang;Jiawen Xi;Ming Zhang;Wei Hua;Xianwu Zeng;Chris Brace;Xiaoze Pei

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引用次数: 0

Abstract

In superconducting electric propulsion systems, power inverters must operate reliably under cryogenic environments to efficiently drive superconducting motors. Integrating power electronic inverters within the existing cryogenic cooling system for superconducting motor can simplify cooling circuits and enhance system-level compactness. Moreover, the on-state and switching losses of insulated gate bipolar transistor (IGBT) reduce at cryogenic temperature, thereby improving efficiency. Previous studies have shown that the characteristics of power devices are highly dependent on temperature. However, limited research has investigated how inverter design parameters affect thermal distribution when the inverter is directly coupled with a cryogenically cooled superconducting drive system. This paper experimentally investigates both output and switching characteristics to examine the changes in IGBT losses under different temperatures. A comprehensive analysis is given on how design parameters influence thermal distribution in cryogenically cooled inverters with rated power of 100 kW. The results provide practical guidelines for thermal design and integration of power electronics in superconducting propulsion systems.

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高温超导电机低温冷却逆变器的热分布研究

在超导电力推进系统中，功率逆变器必须在低温环境下可靠运行，才能有效地驱动超导电机。在现有的超导电机低温冷却系统中集成电力电子逆变器可以简化冷却电路并提高系统级的紧凑性。此外，绝缘栅双极晶体管（IGBT）的导通损耗和开关损耗在低温下降低，从而提高了效率。以往的研究表明，功率器件的特性高度依赖于温度。然而，当逆变器与低温冷却超导驱动系统直接耦合时，逆变器设计参数对其热分布的影响研究有限。本文通过实验研究了IGBT的输出和开关特性，研究了不同温度下IGBT损耗的变化。全面分析了额定功率为100kw的低温冷却逆变器的设计参数对其热分布的影响。研究结果为超导推进系统的热设计和电力电子集成提供了实用的指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Applied Superconductivity 工程技术-工程：电子与电气

CiteScore

3.50

自引率

33.30%

发文量

650

审稿时长

2.3 months

期刊介绍： IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Large scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.