论文和技术资料

Air core reactors are commonly used as shunt reactors, fault current limiting reactors, tuning reactors in capacitor banks. The absence of the iron-core results in a simple and lightweight construction. Consequently, the magnetic field of an air-core reactor is not guided within a material with a higher magnetic permeability. Instead, the magnetic field establishes within air and causes a large stray field outside the mechanical dimension of the reactor itself. This stray field has effects on the reactor components such as windings, terminals, but in general on any adjacent electrically conductive material. A parametrized geometry 2D axisymmetric was used to compute the stray field, in particular the Magnetic Fields interface of the AC/DC Module. The results obtained showing a very good comparison with the traditional analytical formula and measurements. The use of COMSOL Multiphysics® to study these phenomena allows: - build a parameterized geometrical - use a detailed 2Daxi model to take into account the skin and proximity effect on the conductors