The effect of DC flux on the core loss is examined for practical range power and frequency. Relevant equations are derived applied to an optimization algorithm determine minimum at a given ratio s (DC density AC peak density). It has been found that curves hysteresis versus exhibit critical ratio. Below or above this ratio, decreases drastically. On other hand, eddy-current exhibits point increases gradually.

This paper summarizes geometrical effects on inductor winding loss based fixed and variable wire diameter methods as well core gap effects. Relevant AC DC resistance equations are derived an effective design method is given to consider the ratio of alternating direct current skin depth radius r. The effect ac can be minimized by increasing distance far away from gap, however dc will increase. Hence optimal results in minimum total resistance. Finally, a new concept two step solution verified...

A hybrid magnetic approach, consisting of merging two different core properites such as ferrite and iron powder cores together, is an effective solution for power converter applications. It can provide similar properties to that but showing less copper loss than cores. Additionally, the relatively large inductance at low loading current excellent way minimize total loss, achieving high efficiency. In order prevent saturation, placing air gap within a key method obtain optimum performance.

The relationship between the copper loss and geometrical factors of high-frequency low-profile transformers is in investigated with aid finite-element method, some practical design guidelines, which are useful for minimizing loss, presented. It has been shown that winding geometry arrangement significant to determine leakage inductance; magnetic cores lumped air-gaps can cause excessive AC windings; windings variable-width turns have lower DC losses than those constant-width turns. sandwich...

This paper summaries stamped-copper winding fabrication for use in planar inductors and reviews the effect on different geometries such as spiral, meander mesh coils. The technical problems of are studied. Secondly, geometrical factor spiral coil is a significant to determine conductive loss inductor. Finally, analyses results given.

A hybrid magnetic approach, merging two different core properties such as ferrite and iron powder cores, is an effective solution for power converter applications. It can offer similar to that of cores but showing less copper loss than cores. In order prevent saturation, placing air gap within the a key method obtain optimum performance. Furthermore, relatively large inductance at low loading current excellent way minimize in achieve high efficiency operation energy saving.

A novel EMI modeling is presented, based on the finite element and parasitic equivalent circuit method (FE-PEEC), enabling electromagnetic compatibility (EMC) analysis of power converter systems in a precise computationally efficient way. The developed FE-PEEC facilitates comprehensive EMC different effects PCB layout, elements non-linear magnetic devices. As an illustration, 1 kW 3-phase boost performed. Simulation common-mode, differential-mode individual line conducted emissions are...

The DC current impact on the ratio between AC and resistance of inductor winding (Fr) is examined for practical applications. Relevant F <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</sub> equations are derived applied to an optimization algorithm determine minimum loss at a given (k). It has been found that curves versus k exhibit peak critical ratio. Below or above this ratio, decreases generally.

A hybrid magnetic solution, consisting of merging two different core properties such as ferrite and iron powder cores together, is an effective solution for power converter applications. It can provide similar to that but showing less copper loss than cores. Additionally, the relatively large inductance at low loading current excellent way minimize total loss, achieving high efficiency energy saving. In order prevent saturation, placement air gap within a key method obtain optimum...

This paper summarizes the ratio of direct to ripple current as a key factor determine inductor winding and core gap effects related performance. The new proposed multi-layer configuration (identical DC resistance per layer) is recommended optimize total loss. A solution improve harmonic content verified experimentally in terms EMI emission. An effective mathematical inductance model curve-gapped derived, complete optimal PFC design procedure given.

The effect of DC flux on the core loss is examined for practical range power and frequency. Relevant equations are derived applied to an optimization algorithm determine minimum at a given ratio s (DC density AC peak density). It has been found that curves hysteresis versus exhibit critical ratio. Below or above this ratio, decreases drastically. On other hand, eddy current exhibits point increases gradually.

This paper summarizes geometrical effects on inductor winding loss based a fixed diameter method and core gap effects. Relevant DC resistance equations of different configurations are derived an effective design is given to the ratio alternating direct current ΔI/I <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">αv</sub> = k xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> skin depth wire radius δ/r. The effect ac can be minimized by...

Parasitic coupling can play a significant role in the overall performance of multiple EMI filters. The filter attenuation be degraded with inductive and capacitive couplings. This paper is to examine parasitic effects among components physical orientations individual chokes.

This paper presents an innovative curved air-gapped (CAG) inductor solution improving harmonic issues related to lighting equipment applications. The effective mathematical inductance model of the proposed CAG design is derived and verified experimentally in terms EMI emissions. A new LC filter configuration examined improve 2 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">nd</sup> 3 xmlns:xlink="http://www.w3.org/1999/xlink">rd</sup> order...

In order to implement very low profile magnetic components, high frequency thin-film inductors and transformers are developed by depositing thin film of copper upon ferrite substrates use in micro-power level. The operating for the fabricated samples can be as 1 MHz since loss due skin effect is still small at this frequency. Circuit simulations provided determine behaviour inductor. Furthermore, value inductance Q-factor evaluated equivalent circuit model Discrepancies between calculated...

This paper summarizes the winding geometrical and core gap effects on inductor loss. Relevant DC AC resistance equations are derived, an optimal design is given for ratio of direct to ripple current ${\text{k}} = \frac{{{I_{av}}}}{{{{\Delta }}I}}$. A new concept a curve-gapped solution proposed improve line harmonic lighting equipment.

This paper introduces a novel design for power factor correction (PFC) integrated flyback transformer, which aims to enhance line harmonic current and common-mode noise reduction. The includes two stages, PFC stage with boost inductors utilizing transformer. transformer has curved air gap solution prevent core saturation efficiency. study presents simulation experimental results obtained from prototype circuit of 270W (32.5V/8A) 4 ferrite materials (3C92,3F35, 3F45 4F1).

The paper presents a design of single-stage single switch flyback transformer, which incorporates two auxiliary windings and curved air gap. main objective this is to enhance transformer efficiency reduce harmonic current. To validate the proposed design, 250W prototype circuit was constructed, simulations experiments were conducted using four ferrite materials. results obtained from both FEM are promising, indicating effectiveness design. configuration demonstrated improved reduction in

The fabrication methods of planar inductors for switching mode power supplies are studied. Initially, the advantages and disadvantages such devices introduced. magnetic materials used in (such as ferrites) preparation work ferrite substrates, winding insulation considerations also detailed. Designs (which should be optimized with respect to loss) design issues which relate geometry, electrical thermal given conclusion.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML"...

The integrated EMI filter approach is an effective solution to miniaturize the overall dimensions especially in LVDC. hybrid magnetic offers synergistic effects by merging benefits of different materials attenuate conducted emission efficiently.

The relationship between the power loss, winding and core geometries of high-frequency low-profile (HFLP) inductor is investigated with aid finite element method. simulation results have shown that a magnetic lumped air gaps can cause excessive loss in windings, depends on gap size high frequency characteristics material. geometry significant factor to determine total AC loss. optimal thickness determined by length distribution gaps. multi-layer arrangement believed be most promising...

This paper summaries the geometrical effects on winding loss performance of a low profile inductor with spiral coil. Relevant equations are derived and applied to an optimization algorithm that searches for design minimizes total at given core height footprint area. It has been found curves versus arrangement different show minimum critical height. Below or above these factors, increases drastically. Finally, new concept frequency is developed simplify analysis AC