IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, cilt.36, sa.5, 2026 (SCI-Expanded, Scopus)
High-temperature superconductors (HTS) have shown a promising potential in the realisation of high-power-density and compact machines compared to their conventional counterparts. Among many challenges, cryogenics and cooling system design for superconducting machines are the most critical challenges that researchers, scientists, and engineers have been trying to solve in the last few decades. A lot of success has been achieved, while a lot more has to be done in this field. The University of Edinburgh superconducting group has come up with a modular machine design for HTS wind turbine generators. The electromagnetic design of the machine has been published previously. The next step, i.e., the design of a modular cryogenic system - one of its kind - is currently underway. This work reports the initial progress in the cooling system design. In this article, in addition to the introduction to the overall design of the cooling system, an analytical model will be presented that helps estimate some of the important parameters for gaseous helium circulation design for superconducting coils. Following this publication, experimental results will be published later on.