Coupled Cryogenic Thermal and Electrical Models for Transient Analysis of Superconducting Power Devices with Integrated Cryogenic Systems

Cryogenic Engineering Conference 2017

材料科学;物理学

Satyanarayana, S.^1,2 ; Indrakanti, S.^1,2 ; Kim, J.^1 ; Kim, C.^1 ; Pamidi, S.^1,2

Center for Advanced Power Systems, Florida State University, Tallahassee

FL, United States^1

Department of Electrical and Computer Engineering, FAMU-FSU College of Engineering, Tallahassee

FL, United States^2

关键词: Cryogenic helium circulation systems;    High temperature superconducting;    Integrated systems;    Isobaric condition;    Modelling methodology;    Multiple configurations;    Operating temperature;    Temperature evolution;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/278/1/012023/pdf
DOI  :  10.1088/1757-899X/278/1/012023

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Benefits of an integrated high temperature superconducting (HTS) power system and the associated cryogenic systems on board an electric ship or aircraft are discussed. A versatile modelling methodology developed to assess the cryogenic thermal behavior of the integrated system with multiple HTS devices and the various potential configurations are introduced. The utility and effectiveness of the developed modelling methodology is demonstrated using a case study involving a hypothetical system including an HTS propulsion motor, an HTS generator and an HTS power cable cooled by an integrated cryogenic helium circulation system. Using the methodology, multiple configurations are studied. The required total cooling power and the ability to maintain each HTS device at the required operating temperatures are considered for each configuration and the trade-offs are discussed for each configuration. Transient analysis of temperature evolution in the cryogenic helium circulation loop in case of a system failure is carried out to arrive at the required critical response time. The analysis was also performed for a similar liquid nitrogen circulation for an isobaric condition and the cooling capacity ratio is used to compare the relative merits of the two cryogens.