Removable Field Shaping Units for Maintainable Planar Coil Stellarators
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Solution Overview
Problem
Stellarator designs face challenges with complex three-dimensional coil configurations that complicate the removal, maintenance, and replacement of interior components, leading to increased costs and decreased availability.
Innovation Solution
A stellarator design incorporating removable field shaping units with planar coils mounted on structural elements, allowing components to be accessed and replaced without reconfiguring encircling coils, facilitated by structural scaffolding and controlled magnetic field generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex three-dimensional electromagnetic coils are used in stellarator designs, then magnetic field control is improved, but component accessibility and ease of maintenance deteriorate
Solution Approach 1:
The field shaping coil system is divided into multiple independently removable field shaping units. Each unit can be accessed, removed, maintained, and replaced separately without requiring disassembly or reconfiguration of the encircling coils, thereby improving component accessibility while maintaining magnetic field control through the modular structure
Solution Approach 2:
The field shaping units are designed to be extractable from the stellarator device without removing or reconfiguring the encircling coils. This extraction capability allows maintenance personnel to access and service the field shaping units independently, resolving the contradiction between maintaining complex magnetic field control and enabling easy component maintenance
2Reliability
If complex three-dimensional electromagnetic coils are used in stellarator designs, then magnetic field topology is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The complex magnetic field generation function is segmented across multiple field shaping units, each contributing to the overall magnetic field topology. This segmentation simplifies manufacturing by allowing each unit to be constructed and tested independently before installation, reducing overall device complexity while maintaining the required magnetic field characteristics
Solution Approach 2:
The field shaping units are designed with movable and adjustable components that allow for fine-tuning of the magnetic field topology after installation. This dynamic adjustability reduces manufacturing precision requirements during assembly while still achieving the desired complex magnetic field configuration
3Reliability
If encircling coils interlock field shaping units, then magnetic field confinement is improved, but component removability deteriorates
Solution Approach 1:
The field shaping units are designed to be extractable from between the encircling coils without requiring removal or reconfiguration of the coils themselves. This extraction design maintains the interlocking magnetic field confinement structure while enabling component removability for maintenance and replacement
Solution Approach 2:
The space between encircling coils is segmented to accommodate independently removable field shaping units. This segmentation allows each field shaping unit to be accessed and removed separately while the encircling coils remain in place, maintaining plasma confinement integrity while enabling component adaptability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient maintenance and replacement of components, reducing downtime and costs by simplifying access to interior systems while maintaining magnetic field control.
Implementation Method 1
Magnetic fusion devices aim to confine a fusing plasma using magnetic fields
Implementation Method 2
one or more planar shaping coils disposed on a surface of the one or more structural mounting elements
Data Source
AI summary
The present disclosure is directed to stellarators or assemblies including a stellarator including removable and/or replaceable components, such as removable field shaping units and/or removable shaping coils. In some embodiments, the stellarators of the present disclosure include a toroidal sector, which includes one or more removable field shaping units.