Optimization method of stellarator coil structure

Abstract

The invention provides an optimization method of a stellarator coil structure. A coil three-dimensional model is constructed for a stellarator coil; discretization analysis is performed on the coil three-dimensional model, and discretization unit surfaces are constructed; each unit surface is rotated one by one so as to adjust a surface distortion rate, and therefore, the optimization of the coilthree-dimensional model is realized; after the optimized coil three-dimensional model is obtained; a forming mold is subjected to profiling machining on the basis of the optimized coil three-dimensional model; at the moment, a machined forming annular groove model and the optimized coil three-dimensional model are consistent with each other, and therefore, it can be guaranteed that the inner sideface and the outer side face of the forming annular groove model form 90-degree included angles with the ground, integrated machining of the mold can be achieved, and the manufacturing precision of the mold is improved; and the dimensional precision of the stellarator coil formed by winding the mold is also improved under the condition that the manufacturing precision of the mold is improved.

Description

technical field [0001] The invention relates to the technical field of physical engineering, in particular to an optimization method for a stellarator coil structure. Background technique [0002] The stellarator coil is used in the magnetic confinement nuclear fusion device-the stellarator. It is a structure composed of multi-strand coils. There is greater manufacturing difficulty. At present, the multi-strand coil body is usually wound and formed on the forming mold, so it is necessary to open a forming ring groove on the top of the mold, and fill the multi-strand coil body into the forming ring groove and wind it into shape, so that the forming ring of the mold Groove model processing puts forward higher requirements, usually requiring processing accuracy within 0.05mm. [0003] However, since the irregular curved surfaces at the bottom and side of the stellarator coil are irregular, the inner and bottom surfaces of the forming ring groove may appear in order to strictl...

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Problems solved by technology

[0003] However, since the profiled curved surfaces at the bottom and side of the stellarator coil are irregular, the inner and bottom surfaces of the forming ring groove may appear in order to strictly fit the forming ring groove of the forming mold to the contour surface of the stellarator coil. , or the angle between the outer surface and the bottom surface is less than 90°, and the groove body processing with an angle less than 90° cannot realize integrated processing due to tool interference, so the outer plates on both sides of the forming ring groove must be It is processed separately from the inner panel and then assembled and formed. In this way, large manufacturing errors will occur due to installation or secondary clamping, which will reduce the manufacturing accuracy of the forming mold, thereby reducing the star-like shape that relies on the forming mold to wind and shape. The dimensional accuracy of the coil

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