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Full-Text Articles in Engineering
Current-Density Distribution In Solid-Rotor Induction Motor, Mulukutla S. Sarma
Current-Density Distribution In Solid-Rotor Induction Motor, Mulukutla S. Sarma
Sarma Mulukutla
The interaction between the eddy currents induced in the solid cylindrical rotor steel structure and the revolving field of the airgap produces the electrodynamic torque. The polyphase induction machine with solid-iron rotor offers advantages in ease of manufacture, in high torque per ampere at standstill, in withstanding high rotational stresses, and in operating in unusual environments. It is the purpose of this paper to present an approximate three-dimensional nonlinear numerical analysis of the solid-rotor induction motor for finding the three-dimensional current-density distribution in the solid rotor, in order to calculate the performance characteristics, based on finite-difference iterative techniques.
Finite Element Formation For The Numerical Solution Of Three-Dimensional Nonlinear Magnetostatic Field Problems As Applied To The Design Of Electric Machinery, Mulukutla S. Sarma
Finite Element Formation For The Numerical Solution Of Three-Dimensional Nonlinear Magnetostatic Field Problems As Applied To The Design Of Electric Machinery, Mulukutla S. Sarma
Sarma Mulukutla
Recent years have witnessed considerable research activity in the application of digital-computer methods for the determination of the electromagnetic fields in electrical machinery through the solution of Maxwell's equations, while taking full account of the magnetic saturation. Two distinct numerical approaches are evident in the literature: Finite-Difference Method and Finite-Element method. The author has presented in the recent years a finite-difference formulation for 3-dimensional numerical solutions of the nonlinear electromagnetic field problems in terms of potential functions, and has applied for the analysis of the end-zone fields of aerospace homopolar alternators and solid-rotor induction motors. The present work is directed …
Magnetostatic Field Computation By Finite Element Formulation, Mulukutla S. Sarma
Magnetostatic Field Computation By Finite Element Formulation, Mulukutla S. Sarma
Sarma Mulukutla
Recent years have witnessed considerable research activity in the application of digital-computer methods for the determination of the electromagnetic fields in electrical machinery through the solution of Maxwell's equations, while taking full account of the magnetic saturation. Two distinct numerical approaches are evident in the literature: Finite-Difference Method and Finite Element Method. The author has presented in the recent years a finite-difference formulation for 3-dimensional numerical solutions of the nonlinear electromagnetic field problems in terms of potential functions, and has applied for the analysis of the end-zone fields of aerospace homopolar alternators and solid-rotor induction motors. The present work is …