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Simulation for Design Purposes of Magnetic Fields in Turbogenerators with Asymmetrical and Symmetrical Rotors Part II - Model Calibration and Applications

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2 Author(s)

This paper compares shop floor test results and results from simulation using the model presented in Part I. Also, it contains applications of rated load simulation. The results given are for two typical 4-pole and 2-pole turbo-generators. The 4-pole machine is equipped with an asymmetrically slotted rotor. The results show general agreement, within 2%, between theory and test. Some useful findings are obtained regarding the use of asymmetrically designed rotors. Asymmetry leads to lower flux densities in critically saturated parts of the rotor under full load. The effects of rotor asymmetry on excitation current, quadrature axis synchronous reactance and torque angle under rated full load condition are explored. The effect of saturation at full load on the values of quadrature axis reactance and torque angle is presented.

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Power Apparatus and Systems, IEEE Transactions on  (Volume:PAS-91 ,  Issue: 5 )