Title :
Semi-analytical modeling of the end-winding self-inductance in large AC machines
Author :
Grop, H. ; Soulard, Juliette ; Krings, Andreas ; Persson, Henrik
Author_Institution :
Electr. Energy Conversion Dept., R. Inst. of Technol., Stockholm, Sweden
Abstract :
A semi-analytical model for calculation of self-inductance of complex coil geometries having a rectangular cross-section (form-wound coils) is proposed and evaluated. A step-by-step validation is carried on using both 2D-FEM simulations and measurements on a coil placed in air. A second version of the model is developed, to speed up the computation time through removing the possibility to analyze the contribution of the internal flux in the conductor. The predicted value of the self-inductance of a diamond-shaped coil placed in air is within 5% of the measured value.
Keywords :
AC machines; coils; conductors (electric); finite element analysis; machine windings; 2D-FEM simulations; complex coil geometries self-inductance; conductor; diamond-shaped coil; end-winding self-inductance; form-wound coils; internal flux; large ac machines; rectangular cross-section; semianalytical modeling; Coils; Computational modeling; Conductors; Geometry; Inductance; Vectors; AC machines; End-winding; inductance; leakage;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2012 15th International Conference on
Conference_Location :
Sapporo
Print_ISBN :
978-1-4673-2327-7
