Results 21 to 30 of about 104,472 (281)

Design and characterization of 90 GHz feedhorn-coupled TES polarimeter pixels in the SPTpol camera [PDF]

open access: yes, 2012
The SPTpol camera is a two-color, polarization-sensitive bolometer receiver, and was installed on the 10 meter South Pole Telescope in January 2012. SPTpol is designed to study the faint polarization signals in the Cosmic Microwave Background, with two ...
Ade, P.   +60 more
core   +1 more source

Improved Temperature Monitoring and Protection Method of Three-Level NPC Application Based on Half-Bridge IGBT Modules

open access: yesIEEE Access, 2022
The overheating stress of power devices is the main cause of converter system failures, so real-time temperature acquisition, as well as timely over-temperature protection, under various operating conditions are key to achieving a more reliable energy ...
Qiang Wang   +5 more
doaj   +1 more source

Study on the Homogeneity of Large-Size Blade Lithium-Ion Batteries Based on Thermoelectric Coupling Model Simulation

open access: yesEnergies, 2022
To improve the energy density of lithium-ion battery packs, lithium-ion batteries are gradually advancing towards large-size structures, which has become one of the dominant development trends in the battery industry.
Fei Chen   +6 more
doaj   +1 more source

Wave reflection at a free interface in an anisotropic pyroelectric medium with nonclassical thermoelasticity [PDF]

open access: yes, 2016
In this paper, the well-established two-dimensional mathematical model for linear pyroelectric materials is employed to investigate the reflection of waves at the boundary between a vacuum and an elastic, transversely isotropic, pyroelectric material.
A. E. N. Abd alla   +4 more
core   +1 more source

A Novel Methodology for Electric-Thermal Mixed Power Flow Simulation and Transmission Loss Analysis in Multi-Energy Micro-Grids

open access: yesFrontiers in Energy Research, 2021
For urban electrical and thermal energy supply and consumption terminals, the multi-energy system is a way to realize the energy conversion and consumption efficiently, cleanly and economically.
Yi Lei   +4 more
doaj   +1 more source

Optomechanical zipper cavity lasers: theoretical analysis of tuning range and stability [PDF]

open access: yes, 2009
The design of highly wavelength tunable semiconductor laser structures is presented. The system is based on a one dimensional photonic crystal cavity consisting of two patterned, doubly-clamped nanobeams, otherwise known as a "zipper" cavity.
Björk   +38 more
core   +2 more sources

Exploring the Electro-Thermal Parameters of Reliable Power Modules: Insulated Gate Bipolar Transistor Junction and Case Temperature

open access: yesEnergies, 2018
In the exploration of new energy sources and the search for a path to sustainable development the reliable operation of wind turbines is of great importance to the stability of power systems.
Bo-Ying Liu   +4 more
doaj   +1 more source

Low-carbon economic dispatch of regional electro-thermal coupled system considering dynamic constraints of CHP units

open access: yesEnergy Reports, 2023
The flexibility modification of Combined Heat And Power (CHP) units can enable the units to have fast electric output regulation capability, respond to grid auxiliary frequency regulation, and enhance the operational flexibility of regional electric and ...
Lei Zhang   +4 more
doaj   +1 more source

Thermo-Electro-Mechanical Modeling and Experimental Validation of Thickness Change of a Lithium-Ion Pouch Cell with Blend Positive Electrode

open access: yesBatteries, 2023
Lithium-ion battery cells exhibit a complex and nonlinear coupling of thermal, electrochemical, and mechanical behavior. In order to increase insight into these processes, we report the development of a pseudo-three-dimensional (P3D) thermo-electro ...
David Schmider, Wolfgang G. Bessler
doaj   +1 more source

Studying the Effect of Deposition Conditions on the Performance and Reliability of MEMS Gas Sensors

open access: yesSensors, 2007
In this paper, the reliability of a micro-electro-mechanical system (MEMS)-based gas sensor has been investigated using Three Dimensional (3D) coupled multiphysics Finite Element (FE) analysis.
Walied Moussa, Khaled Sadek
doaj   +1 more source

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