Computationally Efficient Winding Loss Calculation with Multiple Windings, Arbitrary Waveforms and Two- or Three-Dimensional Field Geometry

Computationally Efficient Winding Loss Calculation with Multiple Windings, Arbitrary Waveforms, and Two-Dimensional or Three-Dimensional Field Geometry

The squared-field-derivative method for calculating eddy-current (proximity-effect) losses in round-wire or litz-wire transformer and inductor windings is derived. The method is capable of analyzing losses due to two-dimensional and three-dimensional field effects in multiple windings with arbitrary waveforms in each winding. It uses a simple set of numerical magnetostatic field calculations, w...

Winding Loss Calculation with Multiple Windings, Arbitrary Waveforms and Two-Dimensional Field Geometry

Optimization of a Flyback Transformer Winding Considering Two-Dimensional Field Effects, Cost and Loss

The largest loss in an example litz-wire flyback transformer is found during current commutation between windings. In order to reduce this loss, a new optimization method is introduced. The new method optimizes strand size and number in litz wire considering cost and loss. Unlike previous methods, it is valid with twoor three-dimensional field geometry and with different non-sinusoidal waveform...

Analytical Method for Generalization of Numerically Optimized Inductor Winding Shapes

—A method is developed to use a single set of two-dimensional numerical optimizations of inductor winding shapes to simply calculate the optimal winding configuration for any design on the same core without repeating the computationally intensive numerical optimization. For transformer windings, the results are consistent with previous one-dimensional optimizations, but for inductor windings, a...

مدل‌سازی حالت گذرای حرارتی در ترانسفورماتور چند سیم‌پیچه دوطبقه مبتنی بر روش تفاضلات محدود و شبکه‌های عصبی مصنوعی

Nowadays, multi-winding transformers are widely used in traction systems and steel manufacturer.  Multi-winding transformer that is used in these systems has especial geometry (that is usually called as split-winding transformer) and encounters with serious magnetic and thermal difficulties. According to the special geometry of split-winding transformer, studding the transient thermal behavior ...