Journal ArticleDOI
Self-capacitance of inductors
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In this paper, a new method for predicting the stray capacitance of inductors is presented, which is based on an analytical approach and the physical structure of the inductors, where the inductor winding is partitioned into basic cells.Abstract:
A new method for predicting the stray capacitance of inductors is presented. The method is based on an analytical approach and the physical structure of inductors. The inductor winding is partitioned into basic cells-many of which are identical. An expression for the equivalent capacitance of the basic cell is derived. Using this expression, the stray capacitance is found for both single- and multiple-layer coils, including the presence of the core. The method was tested with experimental measurements. The accuracy of the results is good. The derived expressions are useful for designing inductors and can be used for simulation purposes.read more
Citations
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Journal ArticleDOI
Self-Capacitance of High-Voltage Transformers
TL;DR: In this paper, the authors present a comprehensive procedure for calculating all contributions to the self-capacitance of high-voltage transformers and provide a detailed analysis of the problem, based on a physical approach.
Journal ArticleDOI
Using transformer parasitics for resonant converters - a review of the calculation of the stray capacitance of transformers
Jurgen Biela,Johann W. Kolar +1 more
TL;DR: A new simple procedure for modeling parasitic capacitances that is based on the known approaches is proposed and the resulting equations are verified by measurements on four different high voltage transformers.
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Winding resistance of litz-wire and multi-strand inductors
TL;DR: In this paper, an approximate model for multi-strand wire winding, including litz-wire winding, is presented, which takes into account the existence of proximity effect within the litzwire bundle between the strands and between the bundles, as well the skin effect.
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An inductive power system with integrated bi-directional data-transmission
TL;DR: In this article, an inductive power system is presented, capable of remotely powering implantable monitoring and stimulating devices, with an efficiency of 36% over a distance of 3 cm. Optimisation of the power transfer efficiency and the misalignment tolerance was obtained using a self developed design tool.
References
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Journal ArticleDOI
Effects of eddy currents in transformer windings
TL;DR: In this article, the effect of eddy currents on transformer windings is considered and a method is derived for calculating the variation of winding resistance and leakage inductance with frequency for transformers with single-layer, multilayer and sectionalised windings.
Book
Soft ferrites: properties and applications
TL;DR: Ferrites - their nature, preparation and processing the expression of electrical and magnetic properties properties of some manganese zinc and nickel zinc ferrites magnetic circuit theory inductors high frequency inductors wide band transformers pulse transformers and inductors power transformers.
Proceedings ArticleDOI
Modelling iron-powder inductors at high frequencies
TL;DR: In this paper, a high-frequency model of iron-powder core inductors is studied and the first self-resonant frequency is determined from the plot of the measured reactance and allows for the calculation of the parasitic capacitance.