What is it about?

Superconductors are capable of carrying large currents. However, producing these currents with conventional power supplies is inefficient and costly in many ways. This paper presents a superconducting dynamo type flux pump (superconducting power supply) that provides a driving voltage for a closed superconducting circuit, charging a superconducting electromagnet to more than 1000 Amps in ~ 10 seconds. Dynamo flux pumps produce a voltage via the electromagnetic interaction of a moving and penetrating magnetic field with the inherent non-linear dynamics of type II superconductor materials.

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Why is it important?

This kA class dynamo flux pump is set apart from previous devices in that it has a continuous stator and therefore a continuous output voltage. The findings from this study provide new supporting evidence for the physical operating mechanism of dynamo style flux pumps. Additionally, the temperature response of this system has been mapped via experiment and simulation, finding a fundamental lower limit for the operating temperature.


I consider the continuous stator dynamo flux pump to be a leap forward in the field of superconducting power supply research. The findings presented in this paper have the potential to revolutionize how we power our ever increasingly electrified world. A world that one day will be powered by superconducting technologies.

Dr Adam Francis
Victoria University of Wellington

Read the Original

This page is a summary of: Temperature dependent behavior of a kA-class superconducting flux pump with a continuous cylindrical stator, Applied Physics Letters, November 2023, American Institute of Physics,
DOI: 10.1063/5.0169553.
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