An FEM Study of the Electrothermal Properties of Microelectrical Contacts for Application in the Design of Arcless Switches

Robert, Femi; Agrawal, Anita; Clement, S.

doi:10.1109/tcpmt.2016.2514369

Cited by 10 publications

(6 citation statements)

References 27 publications

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“…CNT and graphene-based hybrid materials and composite materials would be given more priority in optoelectronic devices, electrical contacts, interconnects, sensors, and circuits. [45][46][47][48][49] Even though CNTs shows promising results for electrical interconnect applications, full implementation of these CNT electrical interconnects in electronic circuits, and Integrated circuits (IC) would take another few years.…”

Section: Discussionmentioning

confidence: 99%

Power Withstanding Capability and Transient Temperature of Carbon Nanotube-Based Nano Electrical Interconnects

Robert¹

2021

ECS J. Solid State Sci. Technol.

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This paper exhibits the electrothermal modelling and evaluation of Carbon Nanotube (CNT) based electrical interconnects for electronic devices. The continuum model of the CNT is considered and the temperature across interconnect is predicted for the given power. Finite element modelling software COMSOL Multiphysics is used to carry out the simulations. The results are compared with Al and Cu interconnects. An electrothermal analysis is also carried out to obtain the temperature for the given power for Single-Walled CNT, Double-Walled CNT, Triple-Walled CNT, and Multi-Walled CNT. Results show that the CNT interconnects performs better when compared to Al and Cu interconnects. The power withstanding capability of CNT is 68.75 times more than Al and 32.35 times more than Cu. Based on the transient analysis, the time taken by the CNT interconnects to reach a steady temperature is obtained as 0.007 ns. On the application of power, Cu and Al interconnects takes 0.1 ns to reach the steady-state temperature. The nanostructured CNT based electrical interconnects would play a considerable role in replacing Cu and Al electrical interconnect applications for micro and nanoelectronic devices.

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Section: Discussionmentioning

confidence: 99%

Power Withstanding Capability and Transient Temperature of Carbon Nanotube-Based Nano Electrical Interconnects

Robert¹

2021

ECS J. Solid State Sci. Technol.

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“…The contact resistance takes into account both components, that is, the constriction term and the effect of the contaminant films [4]. Elastic and plastic deformation of the interface structures has a deep impact on the constriction resistance [9], which greatly influences the reliability, performance and service life of electrical contacts [11] and thus of power connectors, relays and other electrical devices [12].…”

Section: Introductionmentioning

confidence: 99%

“…The finite element method (FEM) has also been extensively applied to analyze the electrical, mechanical [14] and thermal [15] behavior of rough mating surfaces, even by applying a multiphysics approach [9], [12], [16]- [20]. FEM approaches also allow considering both steady-state and transient conditions in the contact interface [11], [21]. However, most of the abovementioned works based on FEM analyses are not focused to develop a model of the electrical constriction resistance for rough surfaces with generalization capability as done in this work.…”

Section: Introductionmentioning

confidence: 99%

A 3D-FEM-based model to predict the electrical constriction resistance of compressed contacts

et al. 2018

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This work proposes a method to estimate the electrical constriction resistance of two mating metallic rough surfaces based on the finite element method (FEM). The FEM-based method generates a random array of three-dimensional orthogonal parallelepipeds to simulate the stochastic distribution of the asperities across the contact interface. The effect of the contact pressure is studied in detail, since once the contact materials and the topology of the contact area are settled, the contact pressure plays a critical role in determining the electrical constriction resistance. The proposed model is based on two critical variables, the contact pressure and the surface roughness of the mating surfaces, which must be measured in the laboratory to calibrate the model. Results provided by the FEM-based model are compared with experiments for three geometries, thus validating the accuracy of the proposed approach. Although the apparent contact areas of the analyzed specimens have a rectangular shape, the proposed method is also applicable to determine the electrical constriction resistance of other geometries. It is also proved that depending on the pressure applied to the contact interface, the electrical constriction resistance can be almost independent of the apparent area of contact. Although the aim of this work was to generate an electrical constriction resistance model for power connectors, it is also applicable to many other power devices.Peer ReviewedPostprint (author's final draft

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“…8 The electrical contacts present in relays, circuit breakers and relays are also made up of Cu. 9,10 Cu has the best electrical conductivity of 5.8 × 10 5 S cm −1 and the thermal conductivity of 401 W m −1 K −1 . 11,12 The resistivity temperature coefficient of Cu is 0.00389.…”

mentioning

confidence: 99%

“…47,48 Finite element modelling based two-dimensional and three-dimensional simulations can be carried out to analyse the performance of components made of nanomaterials such as CNT and graphene. 9,10,49 Although CNT wires and interconnects have been modelled and analysed in theoretical research, fabrication of CNT structures has remained an enigma until now. 50 Various processing methods are available to increase the strength, thermal conductivity and electrical conductivity of the Cu/CNT composite materials.…”

mentioning

confidence: 99%

Investigation of using CNT and Cu/CNT Wires for Replacing Cu for Power Electronics and Electrical Applications

Robert

Prince

2022

ECS J. Solid State Sci. Technol.

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The demand for power electronics increases continuously with technological development. Next-generation power electronic converter circuits and electrical power system will require sustainable, highly efficient, and higher functionality material which should outperform Cu. In future electrical systems, Cu transmission cables and windings would be replaced by carbon nanotubes (CNTs) and Cu/CNT composite. This paper presents the investigation of using CNT and Cu/CNT wires for replacing Cu for power electronics and electrical applications. Conducting wires made of Cu, Cu/CNT composite, and CNT are considered. Frequency domain electromagnetic analysis was carried out to obtain the performance parameters such as magnetic flux density, current density, impedance, voltage, power, resistance losses, inductance and AC resistance at the current of 1 A supplied with the frequency of 50 Hz . Finite element modeling simulation is carried out using COMSOL Multiphysics. The frequency of the supply current was also varied from 50 Hz to 5 MHz. The analysis shows that Cu/CNT is performing close to Cu in terms of electromagnetic parameters. Thermal analysis was also carried out by varying the current from 1 A to 35 A. CNT conductors produces lowest temperature and perform better in terms of electro-thermal parameters.

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An FEM Study of the Electrothermal Properties of Microelectrical Contacts for Application in the Design of Arcless Switches

Cited by 10 publications

References 27 publications

Power Withstanding Capability and Transient Temperature of Carbon Nanotube-Based Nano Electrical Interconnects

Power Withstanding Capability and Transient Temperature of Carbon Nanotube-Based Nano Electrical Interconnects

A 3D-FEM-based model to predict the electrical constriction resistance of compressed contacts

Investigation of using CNT and Cu/CNT Wires for Replacing Cu for Power Electronics and Electrical Applications

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