Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : December 03, 2016 -
For wide spread of high temperature superconducting devices, such as fault current limiter, magnetic heater, generator and motor, Sumitomo Electric Industries, Ltd. and Sumitomo Heavy Industries, Ltd. have been developing a super-conducting motor for electric vehicles which are used as city bus. In order to realize the efficiency of HTS motor, a compact, high-efficiency and high-reliability cryocooler is required. For these reasons, SHI developed a high-efficiency Stirling cryocooler. In 2015, a prototype HTS motor system was developed and performance tests were conducted but system reliability was not evaluated. In this paper, we evaluate the life time reliability of a prototype cryocooler and report the impact of gas contamination.
