Results 21 to 30 of about 251,703 (265)

Thermoelectricity in atom-sized junctions at room temperatures [PDF]

Scientific Reports, 2013
Atomic and molecular junctions are an emerging class of thermoelectric materials that exploit quantum confinement effects to obtain an enhanced figure of merit. An important feature in such nanoscale systems is that the electron and heat transport become highly sensitive to the atomic configurations.
Makusu Tsutsui, Takanori Morikawa, Akihide Arima, Masateru Taniguchi   +3 more
openaire   +2 more sources

Enhanced Cooling of LED Filament Bulbs Using an Embedded Tri-Needle/Ring Ionic Wind Device

Energies, 2020
Improving the heat dissipation ability for light-emitting diode (LED) filament bulb is very difficult. A tri-needle/ring ionic wind generator was developed to improve the heat dissipation condition of bulbs.
Chunlin Xu, Huai Zheng, Jie Liu, Jingcao Chu, Xiaoliang Zeng, Rong Sun, Sheng Liu   +6 more
doaj   +1 more source

Research on junction temperature detection method of power electronic devices based on turn-off time and turn-off loss

Energy Reports, 2022
The temperature-sensitive electrical parameter (TSEP) method is widely used in the extraction and prediction of junction temperature (Tj) of power semiconductor devices.
Lingfeng Shao, Guoqing Xu, Weiwei Wei, Xichun Zhang, Huiyun Li, Luhai Zheng, Hui Zhao   +6 more
doaj   +1 more source

A Hybrid Model of Turn-Off Loss and Turn-Off Time for Junction Temperature Extraction

IEEE Journal of the Electron Devices Society, 2022
Temperature-sensitive electrical parameter (TSEP) approaches are widely employed in the junction temperature (Tj) extraction and prediction of power semiconductor devices.
Lingfeng Shao, Guoqing Xu, Pengbo Li
doaj   +1 more source

High-temperature anomaly of the conductance of a tunnel junction

Physical Review B, 1997
4 pages, 2 ...
Göppert, Georg, Wang, Xiaohui, Grabert, Hermann   +2 more
openaire   +3 more sources

Investigation of Emissivity and Junction Contacting Status of C-Type Thermocouples Using Rich Hencken Flames

Energies
C-type thermocouples are widely used to measure rich combustions; however, the measured temperature, i.e., the thermocouple junction temperature, is not equal to the gas temperature.
Linqing Zhang, Yingrong Lu, Qinghuang Huang, Peiyong Wang, Juntao Chang   +4 more
doaj   +1 more source

Optical determination of the junction temperature of OLEDs [PDF]

Organic Electronics, 2013
Abstract This paper describes a novel optical measurement technique for the in situ determination of the spatial temperature distribution at the organic layer level in large-area organic light-emitting diodes (OLEDs). The local junction temperature of OLEDs is a very important factor with respect to the luminance uniformity. Moreover the variation of
Buytaert, Jan, Bleumers, Johan, Steen, Alexander, Hanselaer, Peter   +3 more
openaire   +2 more sources

Research on Junction Temperature Smooth Control of SiC MOSFET Based on Body Diode Conduction Loss Adjustment

Energies
In a converter of actual working condition, the change in the current and voltage of the power device will cause the junction temperature to fluctuate greatly. This device is subjected to high thermal stress due to the change in the junction temperature.
Junke Wu, Yunpeng Wei, Yuntao Wu, Zhou Wang, Xingyu Li, Xiangnan Wei   +5 more
doaj   +1 more source

ВИЗНАЧЕННЯ ДОДАТКУ ДО ЗНАЧЕННЯ ТЕПЛОВОГО ОПОРУ СИЛОВИХ НАПІВПРОВІДНИКОВИХ ПРИЛАДІВ

Elektrotehnìka ta Elektroenergetika, 2010
Ця стаття присвячена обгрунтуванню методики визначення додатку до значення теплового опору напівпровідникового приладу для постійного струму, який дає можливість визначити максимальну температуру напівпровідникової структури приладу при навантажені ...
V. S. Ostrenko
doaj   +1 more source

Research on IGBT junction temperature model based on united-parameters

Energy Reports, 2020
The insulated gate bipolar transistor (IGBT) is the most expensive central component in the converter interior, but it is also one of the most vulnerable to failure. The failure of power electronic system is mainly due to temperature change.
Lingfeng Shao, Yi Hu, Guoqing Xu, Ph.D., Xinian Wang   +3 more
doaj   +1 more source