Cryogenic DC/DC converter for superconducting magnet applications

Elwakeel, Abdelrahman and McNeill, Neville and Peña-Alzola, Rafael and Zhang, Min and Yuan, Weijia (2022) Cryogenic DC/DC converter for superconducting magnet applications. IEEE Transactions on Applied Superconductivity, 32 (6). 0601005. ISSN 1051-8223 (

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Recent advances in superconductors have led to their increased application in magnets and a requirement to carry ever-larger currents. This article describes the development and implementation of a cryogenic DC/DC converter for supplying a DC excitation current of 500 A for superconducting magnet applications. Practical aspects are addressed and the rationale behind selecting an interleaved forward converter topology is elucidated. Experimental results are given and a ripple content in the load current of less than 5% is estimated.