Analytical Winding Power Loss Calculation in Gapped Magnetic Components

The analytical calculation of winding loss in gapped magnetic components is complex, and numerical analysis tools, such as finite elements analysis (FEA) tools, are commonly needed to characterize the windings. As FEA tools are used, the required design time of these types of components increases greatly when many simulations are needed to select the appropriate component for a given application, and simple analytical models become necessary to reduce the design time. In this paper, some analytical approaches for winding loss calculation in gapped magnetic components are reviewed and a general two-dimensional equivalent method, which aims to consider the frequency effects in conductors in a simplified manner, is proposed afterward. Due to its simplicity, it can be integrated into design and optimization tools in order to evaluate the influence of the air gap over the winding loss even at the early stages of the design process. The presented model shows good agreement with FEA simulations and measurements.

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A Novel Power Loss Calculation Method for Power Magnetic Components in Power Converters

IEEJ Transactions on Fundamentals and Materials ◽

10.1541/ieejfms.141.69 ◽

2021 ◽

Vol 141 (1) ◽

pp. 69-75

Author(s):

Yuki Ishikura ◽

Tatsuya Hosotani ◽

Masayoshi Yamamoto

Keyword(s):

Calculation Method ◽

Power Loss ◽

Power Converters ◽

Loss Calculation ◽

Magnetic Components

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An Accurate Pseudoempirical Model of Winding Loss Calculation in HF Foil and Round Conductors in Switchmode Magnetics

IEEE Transactions on Power Electronics ◽

10.1109/tpel.2013.2292593 ◽

2014 ◽

Vol 29 (8) ◽

pp. 4231-4246 ◽

Cited By ~ 29

Author(s):

M. Amin Bahmani ◽

Torbjorn Thiringer ◽

Hector Ortega

Keyword(s):

Loss Calculation ◽

Winding Loss

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Comparison of Analytical Approaches Predicting the Compressive Strength of Fibre Reinforced Polymers

Materials ◽

10.3390/ma11122517 ◽

2018 ◽

Vol 11 (12) ◽

pp. 2517 ◽

Cited By ~ 4

Author(s):

Christian Leopold ◽

Sergej Harder ◽

Timo Philipkowski ◽

Wilfried Liebig ◽

Bodo Fiedler

Keyword(s):

Compressive Strength ◽

Prediction Accuracy ◽

Volume Fraction ◽

Fibre Volume Fraction ◽

Experimental Results ◽

Analytical Models ◽

Reinforced Polymers ◽

Reinforced Polymer ◽

Fibre Reinforced Polymer ◽

Analytical Approaches

Common analytical models to predict the unidirectional compressive strength of fibre reinforced polymers are analysed in terms of their accuracy. Several tests were performed to determine parameters for the models and the compressive strength of carbon fibre reinforced polymer (CFRP) and glass fibre reinforced polymer (GFRP). The analytical models are validated for composites with glass and carbon fibres by using the same epoxy matrix system in order to examine whether different fibre types are taken into account. The variation in fibre diameter is smaller for CFRP. The experimental results show that CFRP has about 50% higher compressive strength than GFRP. The models exhibit significantly different results. In general, the analytical models are more precise for CFRP. Only one fibre kinking model’s prediction is in good agreement with the experimental results. This is in contrast to previous findings, where a combined modes model achieves the best prediction accuracy. However, in the original form, the combined modes model is not able to predict the compressive strength for GFRP and was adapted to address this issue. The fibre volume fraction is found to determine the dominating failure mechanisms under compression and thus has a high influence on the prediction accuracy of the various models.

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A high accuracy regressive-derived winding loss calculation model for high frequency applications

2013 IEEE 10th International Conference on Power Electronics and Drive Systems (PEDS) ◽

10.1109/peds.2013.6527044 ◽

2013 ◽

Cited By ~ 4

Author(s):

M. A. Bahmani ◽

T. Thiringer

Keyword(s):

High Frequency ◽

High Accuracy ◽

Calculation Model ◽

Loss Calculation ◽

Winding Loss

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An Improved Analytical Model for Deflections of a Circular Multi-Layer Piezoelectric Actuator

Microelectromechanical Systems ◽

10.1115/imece2005-79818 ◽

2005 ◽

Author(s):

Mandar Deshpande ◽

Laxman Saggere

Keyword(s):

Analytical Solution ◽

Closed Form ◽

Piezoelectric Actuator ◽

Plate Theory ◽

Analytical Models ◽

Sensors And Actuators ◽

Closed Form Solutions ◽

Design And Optimization ◽

Closed Form Analytical Solution ◽

Model Correlation

Models for simple closed-form analytical solutions for accurately predicting static deflections of circular thin-film piezoelectric microactuators are very useful in design and optimization of a variety of MEMS sensors and actuators utilizing piezoelectric actuators. While closed-form solutions treating actuators with simple geometries such as cantilevers and beams are available, simple analytical models treating circular bending-type actuators commonly used in MEMS applications are generally lacking. This paper presents a closed-form analytical solution for accurately estimating the deflections and the volume displacements of a circular multi-layer piezoelectric actuator under combined voltage and pressure loading. The model for the analytical solution presented in this paper, which is based on classical laminated plate theory, allows for inclusion of multiple layers and non-uniform diameters of various layers in the actuator including bonding and electrode layers, unlike other models previously reported in the literature. The analytical solution presented is validated experimentally as well as through a finite element solution and excellent experiment-model correlation within 1% variation is demonstrated. General guidelines for optimization of circular piezoelectric actuator are also discussed. The utility of the model for design optimization of a multi-layered piezoelectric actuator is demonstrated through a numerical example wherein the dimensions of a test actuator are optimized to improve the displaced volume by three-fold under combined voltage and resisting pressure loads.

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Winding loss calculation with multiple windings, arbitrary waveforms, and two-dimensional field geometry

Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370) ◽

10.1109/ias.1999.806024 ◽

2003 ◽

Cited By ~ 9

Author(s):

C.R. Sullivan

Keyword(s):

Two Dimensional ◽

Loss Calculation ◽

Winding Loss ◽

Field Geometry ◽

Multiple Windings

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Analytical Solutions of Structural Response of Cylindrical Shells Subjected to Detonation Loading

Volume 7: Dynamic Systems and Control; Mechatronics and Intelligent Machines, Parts A and B ◽

10.1115/imece2011-63967 ◽

2011 ◽

Author(s):

Hurang Hu ◽

Hamid Hamidzadeh

Keyword(s):

Analytical Solutions ◽

Moving Load ◽

Cylindrical Shells ◽

Space Station ◽

Structural Response ◽

Transient State ◽

Analytical Models ◽

Static State ◽

Design And Optimization ◽

Detonation Loading

Cylindrical shells under a moving internal pressure has wide applications such as oil, gas, and water transmission and distribution pipelines, gun tubes, pressured aircraft fuselages, rocket casings, space station modules, and pulse detonation engines. As a moving load produces larger deformations and higher stresses than does an equivalent static load, the study of this kind of problems has significant importance in design and optimization of such structures. The problem of a cylindrical shell subjected detonation loading has been studied by many researchers, but there are still some problems that need to be further investigated, especially in the application aspect. In this work, analytical solutions for cylindrical shells under detonation loading are developed. The analytical solutions include static state and transient state. For transient state, three analytical models are presented. Numerical results show these analytical solutions are reliable and stable.

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Analytical calculation of intrinsic shielding effectiveness for isotropic and anisotropic materials based on measured electrical parameters

Advances in Radio Science ◽

10.5194/ars-12-83-2014 ◽

2014 ◽

Vol 12 ◽

pp. 83-89 ◽

Cited By ~ 1

Author(s):

M. Kühn ◽

W. John ◽

R. Weigel

Keyword(s):

Near Field ◽

Analytical Calculation ◽

Anisotropic Materials ◽

Electrical Circuit ◽

Analytical Models ◽

Shielding Effectiveness ◽

Electrical Parameters ◽

Measurement Systems ◽

Definition Of ◽

Adequate Measurement

Abstract. This contribution contains the mechanisms for calculation of magnetic shielding effectiveness from material samples, based on measured electrical parameters. For this, measurement systems for the electrical conductivity of high and low conductive material samples with respect to the direction of current flow are presented and discussed. Also a definition of isotropic and anisotropic materials with electrical circuit diagrams is given. For prediction of shielding effectiveness for isotropic and anisotropic materials, several analytical models are presented. Also adaptions to gain a near field solution are part of this contribution. All analytical models will also be validated with an adequate measurement system.

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