A5034147116- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Advanced DC-DC Converters
- Frequency Control in Power Systems
- Magnetic confinement fusion research
- Superconductivity in MgB2 and Alloys
- Plasma Diagnostics and Applications
- Industrial Technology and Control Systems
- Electric Motor Design and Analysis
- Silicon Carbide Semiconductor Technologies
- Magnetic and transport properties of perovskites and related materials
- Geomagnetism and Paleomagnetism Studies
- Magnetic Field Sensors Techniques
Sichuan University
2023-2025
The flux pumps can realize non-contact excitation of high-temperature superconducting (HTS) magnet and eliminate heat leakage caused by current leads. However, earlier proposed pump needs to be installed inside the cryostat, which leads additional load cryogenic system. Here, we report successful demonstration a through-wall linear-motor type pump, with its heating parts such as copper windings completely outside while generated is dissipated in air insulated from cryostat. With an...
The linear-motor type magnetic flux pump serves as a wireless power source intended for charging second-generation (2G) high-temperature superconducting (HTS) double-pancake coils (DPC). This study is grounded in the utilization of apparatus, conjunction with theoretical framework macroscopic coupling effects (MMCE). real-time manipulation direct bias field and alternating traveling wave employed to facilitate precise stable operation HTS DPC persistent current mode (PCM). Experimental...
Due to its low energy consumption and cost-effectiveness, contactless charging using flux pumps has emerged as one of the most promising candidates for replacing traditional superconducting DC power supplies. In our previous work, we have successfully developed a kilo-amp linear-motor type pump (W. Wang et al., Sep. 2022). this study, use two such perform convergence test reached total current output 3.1 kA, which is highest record up date. One was improved with design, resulting in reduced...
High temperature superconductivity (HTS) flux pump can be used as the exciter to inject direct current into superconducting excitation coil of a synchronous motor, without lead and with low thermal efficiency, which will reduce cryogenic volume improve efficiency HTS motor. However, has non-negligible impact when it is running continuously for long time within Dewar, cause heavy heat burden system. Therefore, based on linear-motor type previously invented in our laboratory, this paper...
As a travelling-wave flux pump, the HTS dynamo generates DC-biased AC travelling wave on stator tape placed in air-gap, which can output large DC current into an coil without need for leads, thus effectively reducing heat leakage and operational cost comparing with conventional contact power supplies. In this paper, we introduce method to enable symmetric bipolar of dynamo, based "four-quadrant" control originates from theory macroscopic magnetic coupling. This uses N-S arrangement permanent...