Abstract
Abstract:
A novel optimization strategy for planar inductor
design, based on a per-layer approach for calculation of the
optimal foil thickness is presented in this paper.
Implementation of this strategy results in reduced ac- and dcresistance
of the winding. Inductor windings optimized for
sinusoidal excitation were constructed and the resistance
measured. Results are shown for air core inductors and the
performance of the same windings in gapped magnetic cores
is also reported. An optimisation technique for non-sinusoidal
excitation is also proposed. Air gap proximity losses can be
reduced by notching the winding in the region of the air gap.
This technique combined with the newly proposed layer
optimisation strategy is also investigated for a trapezoidal
current waveform.