Results 231 to 240 of about 47,975 (255)

Direct Measurement of Transformer Winding Hot Spot Temperature

IEEE Power Engineering Review, 1984
Fiber optic temperature sensors were embedded diarectly within the windings of a large auto-transformer to measure hot spot temperatures under a variety of loading conditions. Numerous application problems were encountered, but a substantial amount of usable data was acquired.
W. J. McNutt, J. C. McIver, G. E. Leibinger, D. J. Fallon, K. A. Wickersheim   +4 more
openaire   +1 more source

Electron temperature of hot spots in quantum Hall conductors

Physical Review B, 2006
Spectroscopic studies are carried out on the cyclotron emission from the hot spots of $\mathrm{Ga}\mathrm{As}∕\mathrm{Al}\mathrm{Ga}\mathrm{As}$ two-dimensional electron gas systems in a quantum Hall regime at $B=6.0\phantom{\rule{0.3em}{0ex}}\mathrm{T}$ $(\ensuremath{\nu}=2.5)$ and $7.5\phantom{\rule{0.3em}{0ex}}\mathrm{T}$ $(\ensuremath{\nu}=2.0)$ at
S. Komiyama, H. Sakuma, K. Ikushima, K. Hirakawa   +3 more
openaire   +1 more source

The effect of various wafer thicknesses on hot spot temperature

2008 11th Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, 2008
Hot spots on thin wafers of IC packages are becoming an important issue in thermal and electrical engineering. To investigate these hot spots, we developed a diode temperature sensor array (DTSA) that consists of an array of 32 times 32 diodes (1,024 diodes) in an 8 mm x 8 mm surface area.
null Kyo Sung Choo, null Il Young Han, null Sung Jin Kim   +2 more
openaire   +1 more source

The Effect of “Hot-Spot” Temperatures on the Unlubricated Wear of Steel

A S L E Transactions, 1967
Experiments are described in which pins of low-alloy, medium-carbon steel are worn against disks of the same material under unlubricated sliding conditions. The friction and wear characteristics of this system are measured as functions of load and speed.
openaire   +1 more source

Hot-spot winding temperatures in self-cooled oil-insulated transformers

Electrical Engineering, 1942
IN recent years operators have wanted to know how much overload a transformer would carry for a given length of time without exceeding a safe temperature. This knowledge would enable them to obtain the most from available equipment or to install equipment which would provide reasonable overload capacity in case of emergency.
F. J. Vogel, Paul Narbutovskih
openaire   +1 more source

Investigation of hot-spot temperatures in integral-horsepower motors

Electrical Engineering, 1945
L. E. Hildebrand, B. M. Cain, F. D. Phillips, W. R. Hough, J. G. Rosswog, C. P. Potter   +5 more
openaire   +2 more sources

SPICE simulation of ferrite core losses and hot spot temperature estimation

2017 24th IEEE International Conference on Electronics, Circuits and Systems (ICECS), 2017
A simple, user-friendly model is proposed to estimate ferrite core losses and the hot spot temperature by SPICE simulation that are based on the Steinmetz equation. The model is capable to produce, on the fly, the estimates as the operating condition of the core are changing.
openaire   +1 more source

Minimising hot spot temperature in gradient coil design

2010
Gradient coil hot spots can lead to image distortion and coil failure. An analytic method is presented for redesigning gradient coils with improved spatial temperature distributions and reduced hot spot temperatures. Maximum temperature is a non-linear constraint and a relaxed fixed point iteration scheme is introduced to alter the coil windings ...
While, Peter T., Forbes, Larry K., Crozier, Stuart   +2 more
openaire   +1 more source

Improvement of the accuracy in measuring cryogenic hot spot mix by multi-channel Ross filter pairs through a two-temperature model of hot spot electron temperature

Review of Scientific Instruments
In inertial confinement fusion experiments, hot spot mix caused by hydrodynamic instabilities is a critical performance limitation. Currently, multi-channel Ross filter pair imaging is used to quantitatively diagnose the mix mass of cryogenic hot spots driven by 100 kJ energy, but this method brings significant uncertainty.
Shengxin Ke, Bolun Chen, Feng Wang, Xing Zhang, Xiangming Liu, Yankang Wu, Yudong Pu, Chuankui Sun, Ao Sun, Ji Yan, Wanli Shang, Tianxuan Huang, Dong Yang, Yunsong Dong, Jiamin Yang   +14 more
openaire   +2 more sources

Transformer hot spot temperature prediction based on basic operator information

International Journal of Electrical Power and Energy Systems, 2021
Tiedo Tinga
exaly