NEW APPROACH TO SYMMETRIZATION OF THREE-PHASE NETWORK

Daniel Mayer - Petr Kropík

   The presented method of synthesis of a symmetrization circuit makes it possible to characterize its physical structure with all particulars. A factor of nonsymmetry of a three-phase system of load currents was introduced. Computation of parameters of elements of the symmetrization circuit is then formulated as an optimization problem of determining such parameters with which the factor of nonsymmetry reaches its minimum. The described method also allows investigating surroundings of this minimum, which allows respecting the production tolerances of symmetrization elements. Numerical calculation was carried out by means of program system MATLAB 7.0.1 SP1, particularly of the Optimization Toolbox module.

Keywords: MATLAB, nonsymmetry of a three-phase system, objective function, optimization, symmetrization circuit

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