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Vector control is a method for dynamic control of the speed torque and power factor of the induction motor through permanent control of the intensity and the angle of the space vectors of the electromagnetic variables. The basic idea of the Field Oriented Control (FOC) algorithm is decoupling the stator current into flux and torque producing components. Both components can be controlled separately after decoupling. The structure of the motor controller is then as simple as that for a separately excited DC motor. Direct vector FOC control system is based on measurement, acquisition and (or)...

In this book a new and original approach to the methodology of the design and optimization of three-phase distribution transformers is developed and explained. Two optimization techniques in the MATLAB environment, Global Search - GS and Pattern Search - PS, for minimizing the objective function are applied. By implementing nine optimization variables, the sufficient accuracy of calculations is assured. Involvement of additional constraint functions in the optimization procedure, contributes to achieve the best solution faster then usual. When generating the 3D transformer models it is...