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The growing need for accurate estimation of by fitting battery's thermal and electrical performances at different operating conditions is crucial in its applications especially in electrified vehicles. This paper presents an effective method for developing a thermal and electrical modeling methodology for calculation thermal behavior of a lithium-ion cell and the voltage response under a current solicitation...
This paper proposes the design of an online temperature estimation technique for a Li-ion battery pack that utilizes phase change composite (PCC™) for thermal management. The phase change composite allows heat absorption and distribution, enabling lightweight and compact packs with extended cycle-life and safety. A coupled electro-thermal model has been developed for the cylindrical 18650 Li-ion cells,...
The thermal behavior knowledge of IGBT devices is very important to address issues related to the thermal management. Experimental measurements could provide the junction temperature of the devices in transient or steady state conditions. However, in case of short circuit, it became very difficult to get the temperatures because of the very short time in which the phenomenon happens (order of microseconds)...
This paper deals with the development of methodology suited for design of computation algorithm which is able to determine power losses of electronic systems based on measured temperature distribution. Second part of paper is given to development of methodology for optimal selection of mentioned active components for thermal simulation model of given electronic system. Finally experimental verification...
In highly exploited and integrated mechatronic systems the thermal design and management defines the maximum load case. The trend to move to higher power densities needs precise and reliable thermal models of electrical machines to determine the limits of new and thermally demanding use cases and/or gives design guidelines for future generations of the product.
Frequency tuning of aluminum nitride (AlN) microre-sonators has been demonstrated via localized heating (ovenization) of the resonator. Specifically, piezoelectically driven 625 MHz microresonators were heated by embedded joule heaters in vacuum. A temperature increase of 135°C was achieved with only 2.8 mW of power consumption. This increase corresponds to ∼4500ppm of frequency shift. To minimize...
Battery thermal management for high power applications such as electrical/hybrid vehicles is crucial. Modeling is an indispensible tool to help engineers design better battery cooling systems. An accurate battery thermal model using Foster network is proposed. The parameters in the Foster network including capacitance and resistance are extracted from Computational Fluid Dynamics (CFD) results. The...
The paper deals with the nonlinear compact thermal model of SiC power semiconductor devices based on the Cauer network. The analytical description of the model and the method of the model parameter estimation are presented. The accuracy and usefulness of the model is verified experimentally for the Schottky diode and MESFET transistor at their various cooling conditions.
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