Saturday 01 February 2025
As researchers continue to push the boundaries of high-temperature superconducting (HTS) technology, a new study sheds light on the intricacies of magnetization and demagnetization in HTS stacks used in electrical machines. The investigation delves into the effects of pulsed field magnetization (PFM) on the trapped field profiles and total trapped flux of HTS tapes with varying layer numbers.
The team behind the study employed a combination of numerical simulations and experimental measurements to examine the behavior of HTS tapes under PFM conditions. They discovered that the maximum trapped field increases as the number of layers in the stack grows, but only up to a certain point. Beyond this threshold, further increasing the layer count does not result in significant improvements.
The researchers also found that the shielding effect of TFS (Trapped Flux Shields) reduces iron losses due to their ability to diminish the magnetic field in motor iron cores. This phenomenon is more pronounced with higher numbers of HTS tapes. The study highlights the importance of considering both magnetization and demagnetization when designing HTS-based electrical machines, as these processes can significantly impact performance.
One key takeaway from this research is that the optimal layer number for achieving maximum trapped field varies depending on the pulsed current amplitude. As the pulsed current increases, the peak value of the average trapped field also rises, but at a slower rate beyond a certain point. This finding suggests that optimizing the PFM process and HTS stack architecture can lead to improved performance in electrical machines.
The study’s findings have significant implications for the development of HTS-based electric aircraft propulsion systems. As researchers continue to explore new applications for HTS technology, understanding the intricacies of magnetization and demagnetization is crucial for designing efficient and high-performance systems.
This research showcases the ongoing advancements in HTS technology and its potential to revolutionize various industries. By continuing to push the boundaries of what’s possible with HTS, scientists can create innovative solutions that transform our lives.
Cite this article: “Optimizing High-Temperature Superconducting Stacks for Electrical Machines”, The Science Archive, 2025.
High-Temperature Superconducting, Magnetization, Demagnetization, Pulsed Field Magnetization, Trapped Flux Shields, Iron Losses, Electrical Machines, Electric Aircraft Propulsion, Hts Stacks, Layer Numbers
