Magnetizable concrete composite materials for road-embedded wireless power transfer pads

Tavakoli, Reza; Echols, Allon; Pratik, Ujjwal; Pantic, Zeljko; Pozo, Fray; Malakooti, Amir; Maguire, Marc

doi:10.1109/ecce.2017.8096705

Cited by 23 publications

(8 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Recently, magnetizable concretes for IPT applications (Magment TM ) have been developed [47] and tested [48] with the purpose of enhancing the magnetic coupling of on-line battery chargers for EVs. Regarding the Magment, according to manufacturer's information it is a composite material consisting of a cement matrix loaded with magnetizable particles.…”

Section: Introductionmentioning

confidence: 99%

Magnetizable Concrete Flux Concentrators for Wireless Inductive Power Transfer Applications

Carretero

Lope

Acero

2020

IEEE J. Emerg. Sel. Topics Power Electron.

View full text Add to dashboard Cite

Wireless inductive power transfer (IPT) systems incorporate magnetic flux concentrators in order to improve some features, as coupling and efficiency, and also to reduce electromagnetic emissions. Usually, flux concentrators consist of ferrite cores, which are arranged according to the size and shape of inductive power pads and also according to the application. Ferrite is the most common magnetic material due to its optimal balance between performance and cost. Despite the availability of ferrite cores with a wide set of shapes and sizes, in some applications the optimal matching between inductive power paths and flux concentrators becomes problematic. In this work, magnetic cement concrete is evaluated as a size-adaptable material for the arrangement of flux concentrators of IPT systems. Both cement powder and concrete are magnetically characterized at different temperature, field level and frequencies, and measurements show that the achieved levels of permeability, Curie's temperature and losses make this material attractive for potential flux concentrator uses. A potential IPT application is evaluated by means of a finite element study and the results are applied to a prototype design. Feasibility of use of the magnetic cement is tested by means of different power pads according to different flux concentrator arrangements.

show abstract

Section: Introductionmentioning

confidence: 99%

Magnetizable Concrete Flux Concentrators for Wireless Inductive Power Transfer Applications

Carretero

Lope

Acero

2020

IEEE J. Emerg. Sel. Topics Power Electron.

View full text Add to dashboard Cite

show abstract

“…Acesta este un așa numit Beton Magnetic (BM) care înlocuiește agregatele uzuale (pietriș, nisip, etc.) prin agregate cu proprietăți magnetice (ferite, oxizi de fier, materiale amorfe sau nanocristaline) [8][9][10][11] obținute din materiale recuperate. În [11] s-a determinat permeabilitatea magnetică relativă pe mostre toroidale cu dimensiuni specifice conform [12] prin compararea cu permeabilitatea de referință, cunoscută, a unui tor cu aceleași dimensiuni din același material astfel că inductivitatea proprie L este elementul de comparație.…”

Section: îNlocuirea Feritelor Din Construcția Cuploarelor Inductiveunclassified

Mimo Inductive Coupling for High Power Wireless Systems

Marinescu¹,

Tudorache²,

Vintilă³

2021

APME/EMMD

View full text Add to dashboard Cite

Transmitter component of high power inductive wireless transmission systems for electric busses and trucks should be embedded in the road to ensure a free circulation of vehicles and to ensure a good mechanical resistance of the pavement, in the charging region, similar to the rest of the road. In such application, ferrites cannot be envisaged as magnetic flux concentrators due to their fragility. An adequate solution to replace the ferrites consists in using magnetic concrete as magnetic field concentrator for wireless inductive transmission system. This solution is analyzed in this paper and used for an MIMO (Multiple-Input-Multiple-Output) inductive wireless power system based on Double-D structure coils, for a transferred power of 125 kW, corresponding to the standard project SAE J2954-2, sufficient for an electric bus for 50 persons. The Finite Element analysis carried out in the paper has the objective of determining the useful and parasitic magnetic coupling parameters of the proposed inductive power transfer system

show abstract

“…Although the employment of WPT to power LEDs is still uncommon, several papers exploring the effects of resonant coupling on the efficiency of wireless charging of EVs can be found in the literature. [10][11][12] For example, Tavakoli et al 13 have reported the possibility of using additives in the mortar to increase the power transfer efficiency in the wireless charging process of EVs. In the cited publication, the authors described the development of a solution that replaces commonly used ferrite tiles with magnetite aggregates disperses on concrete substrates.…”

Section: Introductionmentioning

confidence: 99%

Modified mortar for wireless powered lighting systems

Esteves

Silva

Fonseca

et al. 2022

Structural Concrete

View full text Add to dashboard Cite

A lighting system embedded in a mortar structure powered by an inductive system is described. Different additives with high magnetic permeability were tested to increase power transference efficiency. The best results were obtained using natural magnetite, therefore the impact of different natural magnetite concentrations on the mortar mechanical and electromagnetic properties was investigated. The best results were achieved for samples with 75 wt.% of magnetite. With this composition, three proofs‐of‐concept were fabricated to show the potential of the technology.

show abstract

Magnetizable concrete composite materials for road-embedded wireless power transfer pads

Cited by 23 publications

References 9 publications

Magnetizable Concrete Flux Concentrators for Wireless Inductive Power Transfer Applications

Magnetizable Concrete Flux Concentrators for Wireless Inductive Power Transfer Applications

Mimo Inductive Coupling for High Power Wireless Systems

Modified mortar for wireless powered lighting systems

Contact Info

Product

Resources

About