Application optimization to search values of spurious elements of EMI filters

In Introduction main problems of measurement of EMI filter are introduced and it is suggested that creation of model of EMI filter is useful. In this paper model of EMI filter which is based on basic circuitry of the EMI filter is shown. Reduced equivalent circuitries model for EMI filter are also shown, because these circuitries are more suitable for usage in iteration optimization loop. The spurious elements of filter are searched with optimization. Participial swarm optimization is used. Two possibilities of fitness function calculations are shown. Results of both approaches are compared. Using fitness function with weight coefficients gives better results.