Close-cycle cooling concept; cryogenics cooling system; higherature superconducting (HTS) motor; thermal characteristics; Convection cooling; Heat of vaporization; Maximum temperature; Superconducting synchronous motors; Temperature differences; Thermal characteristics; Uniform temperature; Electronic, Optical and Magnetic Materials; Condensed Matter Physics; Electrical and Electronic Engineering; high-temperature superconducting (HTS) motor
Abstract :
[en] The increase in the heat generated from higherature superconducting (HTS) rotating components limits the applicability of a cooling method. Hence, a liquid cooling and convection cooling scheme for high-heat-flux applications has gained interest. An indirect closed-cycle cooling scheme coupled with a cryocooler is an alternative cooling technique, in which the heat of vaporization is transferred from an evaporator to a condenser with a relatively small temperature difference. The cooling system of a demonstrative 3-MW-class HTS motor is presented in this paper. A cryogen was used to maintain uniform temperature of the field coil; the maximum temperature of the HTS coils was approximately 30 K during normal operation. The operation process of the cooling system is illustrated, and the main circulation parameters, namely, cryogen flow rate and the heat flux of cooling system, are investigated.
Disciplines :
Electrical & electronics engineering
Author, co-author :
LE, Thanh-Dung ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom ; Department of Electrical Engineering, Jeju National University, Jeju, South Korea
Kim, Ji Hyung; Department of Electrical Engineering, Jeju National University, Jeju, South Korea
Kim, Do Jin; Department of Electrical Engineering, Jeju National University, Jeju, South Korea
Boo, Chang Jin; Department of Electrical Energy Engineering, Jeju International University, Jeju, South Korea
Jo, Young Sik; Korea Electrotechnology Research Institute, Changwon, South Korea
Yoon, Yong Soo; Department of Electrical Engineering, Shin Ansan University, Ansan, South Korea
Yoon, Kyung Yong; Department of Electrical and Electronic Engineering, Yonsei University, Seoul, South Korea
Choi, Yoon Hyuck; Department of Materials Science and Engineering, Korea University, Seoul, South Korea
Lee, Haigun; Department of Materials Science and Engineering, Korea University, Seoul, South Korea
Kim, Ho Min; Department of Electrical Engineering, Jeju National University, Jeju, South Korea
External co-authors :
yes
Language :
English
Title :
Design of Indirect Closed-Cycle Cooling Scheme Coupled with a Cryocooler for a 3-MW-Class Higherature Superconducting Synchronous Motor
Publication date :
June 2016
Journal title :
IEEE Transactions on Applied Superconductivity
ISSN :
1051-8223
Publisher :
Institute of Electrical and Electronics Engineers Inc.
Power Generation & Electricity Delivery of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) Ministry of Knowledge Economy of Korea.
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