An Optimized Equivalent Source Modeling for the Evaluation of Time Harmonic Radiated Fields from Electrical Machines and Drives

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M.R Barzegaran, Osama A. Mohammed

A model for electrical machines useful for radiated electromagnetic field studies in multi-source environment is proposed. The various aspects of electromagnetic siganture are considered. This model was created from a representative rectangular prism carrying a set of unbalanced currents in its branches.The geometry and the currents of the equivalent model were calculated based upon a genetic algorithm-based particle swarm optimization process taking into consideration the actual size and the operating conditions of the drive system being studied. The electric field was chosen as objective function, which is the main element of the optimization.The simulated results show acceptable accuracy and excellent simulation time as compared to the full 3DFE model of the actual machine.

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