Transformer Design

  • Erickson R
  • Maksimović D
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Abstract

1. In a multiple-winding transformer, the low-frequency copper losses are minimized when the available window area is allocated to the windings according to their apparent powers, or ampere-turns. 2. As peak ac flux density is increased, core loss increases while copper losses decrease. There is an optimum flux density that leads to minimum total power loss. Provided that the core material is operated near its intended frequency, then the optimum flux density is less than the saturation flux density. Minimization of total loss then determines the choice of peak ac flux density. 3. The core geometrical constant Kgfe is a measure of the magnetic size of a core, for applications in which core loss is significant. In the Kgfe design method, the peak flux density is optimized to yield minimum total loss, as opposed to the Kg design method where peak flux density is a given specification.

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Erickson, R. W., & Maksimović, D. (2001). Transformer Design. In Fundamentals of Power Electronics (pp. 565–586). Springer US. https://doi.org/10.1007/0-306-48048-4_15

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