Effect of the Selection of Input Voltage and Maximum Operating Flux Density of Different Core Material on the Optimum Design of Switching Power Converter

The effects of using different input voltage and different core material of different saturation flux density on the switching power converter weight minimization are presented. The design- oriented sensitivity analysis by perturbing the operating point, for example, the input voltage and the maximum flux density, reveals valuable design insights into the switching power converter global design optimization. A cost-effective computer-aided nonlinear programming (NLP) design technique is utilized for the minimum weight design. The new topology Cuk switching converter is taken as a demonstration example. Detailed loss and weight breakdowns as a function of the input voltage and the operating flux density are calculated for the optimum operation. Significant differences of the overall power converter performances are observed by using different input voltages and saturation flux densities.