A method of constructing a high temperature superconducting magnet with non-uniform radial resistance
By differentiating the inter-turn resistance values of the inner and outer sub-magnets, the contradiction between stability and safety of existing nested high-temperature superconducting magnets under extreme conditions is resolved, achieving efficient quench suppression and stress control, and improving the overall performance of the magnet.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
- Filing Date
- 2026-06-12
- Publication Date
- 2026-07-17
AI Technical Summary
The existing uniform inter-turn resistance design of nested high-temperature superconducting magnets cannot simultaneously meet the anti-quench stability requirements of the inner sub-magnets and the stress safety requirements of the outer sub-magnets, resulting in the magnets being easily damaged under extreme operating conditions, which limits the improvement of magnetic field strength and engineering applications.
A non-single radial resistance value construction method is adopted. The differential inter-turn resistance values of the inner and outer sub-magnets are determined by electromagnetic simulation calculation. The inter-turn resistance is adjusted by selecting metal strips with different surface conditions and winding tension. Reasonable inter-turn resistance ranges are set for the inner and outer sub-magnets respectively, so as to achieve targeted matching of the radial electromagnetic environment.
This effectively improves the magnet's resistance to quench triggering and its stress tolerance after quench, ensuring that the inner sub-magnet provides efficient inter-turn shunt current during normal operation, while the outer sub-magnet limits the shunt current amplitude during quench, reducing the risk of cascading quench and improving the overall stability and safety of the magnet.
Smart Images
Figure CN122417601A_ABST