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This paper reports the optimization process of a MW-size, medium voltage, squirrel cage induction motor for industrial applications. Starting from an existing construction, the aim of the optimization is to maximize the induction machine power density, while fulfilling high demanding, specific international Oil&Gas industry regulations. For every considered design, the motor performance is estimated...
The use of multiobjective optimization technique in determining the values of the steady-state equivalent circuit parameters of a three-phase squirrel-cage induction machine is discussed. The identification procedure is based on the steady state phase current versus slip and torque versus slip characteristics. Nonlinearities in the Induction machine such as saturation effects and skin effects are...
It is a known fact that when operating at light load condition, the efficiency of induction motors can be improved by reducing the supply voltage. This paper investigates the optimal efficiency of split-phase motors when loaded below their horsepower rating. An accurate equivalent circuit model that takes into account stray load loss and rotational loss, in addition to core loss, is proposed for efficiency...
The model equivalent circuit is identified. From motor manufacturers test report, parameters Ra, and Xm are calculated. The rotor parameters X12, X1, X2 ,R1, R2 and stator parameter Xa are determined by using direct search optimization method. The starting and running performance values are calculated and compared with available values. From estimated parameters, the transient and sub-transient reactance...
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