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The paper discusses the air gap field distribution of an induction machine operating under special conditions. It focuses mainly on effects of machine's load and its rotor eccentricity on volume of space harmonics and their magnitudes. The study compares limited analytical prediction with full-scale FEA approach and gives a short overview of crucial aspects of machines' design.
This present paper will approach the design and analysis of two six-phase electrical machines, a synchronous permanent magnet and a squirrel cage induction motors, for electrical power steering systems. Finite element method will be used in order to analyze, in a comparative manner, the performances of the two electrical machines.
An analytical approach to calculate the saturation of the magnetic field in cage induction machines (IM) is compared with non-linear finite element (FEM) time step solutions and with measurements. Especially at locked rotor the saturation is dominated by the air-gap zig-zag flux, whereas the main flux saturation is of minor importance, especially in non-skewed machines. The analytical approach allows...
As a new type of induction machine, brushless doubly-fed machine (BDFM) has excellent speed regulation performance and can run in the condition of variable-speed-constant-frequency power generation. It has good applicable potentials on energy-saving-speed-adjusting motors and wind power generation system, but its structure and operating principle are more complex. To study the effect of different...
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