Academic literature on the topic 'Power temperature coefficient'
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Journal articles on the topic "Power temperature coefficient"
Fokeev, A. E., and I. N. Tumakov. "Analysis of Operating Modes of Oil-Immersed Power Transformers with a Voltage of 10 (6) / 0.4 kV." Vestnik IzhGTU imeni M.T. Kalashnikova 24, no. 4 (2021): 80–91. http://dx.doi.org/10.22213/2413-1172-2021-4-80-91.
Full textRadziemska, E., and E. Klugmann. "Photovoltaic Maximum Power Point Varying with Illumination and Temperature." Journal of Solar Energy Engineering 128, no. 1 (January 24, 2005): 34–39. http://dx.doi.org/10.1115/1.2147586.
Full textTsao, Bang Hung, Jacob Lawson, James D. Scofield, Clinton Laing, and Jeffery Brown. "3D Thermal Stress Model for SiC Power Modules." Materials Science Forum 600-603 (September 2008): 1227–30. http://dx.doi.org/10.4028/www.scientific.net/msf.600-603.1227.
Full textKonovalov, Dmytro, Ignat Tolstorebrov, Yuhiro Iwamoto, Halina Kobalava, Jacob Joseph Lamb, and Trygve Magne Eikevik. "Optimizing Low-Temperature Three-Circuit Evaporative Cooling System for an Electric Motor by Using Refrigerants." Energies 17, no. 16 (August 9, 2024): 3942. http://dx.doi.org/10.3390/en17163942.
Full textKang, Yunxin, and Ling Xu. "First-order Bandgap Reference Source Design with High Power Supply Rejection Ratio." Journal of Physics: Conference Series 2405, no. 1 (December 1, 2022): 012003. http://dx.doi.org/10.1088/1742-6596/2405/1/012003.
Full textHossain, Md Al Amin, Md Abdul Malek Soner, Md Abdus Salam, Md Fazlul Huq, and Md Shamsul Huda Sohel. "Measurement of Feedback Reactivity Effects of the Baec Triga Reactor." Journal of Bangladesh Academy of Sciences 42, no. 2 (December 30, 2018): 183–90. http://dx.doi.org/10.3329/jbas.v42i2.40050.
Full textPrijić, Z., Z. Pavlović, S. Ristić, and N. Stojadinović. "Zero-temperature-coefficient (ZTC) biasing of power VDMOS transistors." Electronics Letters 29, no. 5 (1993): 435. http://dx.doi.org/10.1049/el:19930291.
Full textImhoff, Eugene A., Karl D. Hobart, Francis J. Kub, M. G. Ancona, Rachael L. Myers-Ward, N. Y. Garces, Virginia D. Wheeler, Luke O. Nyakiti, Charles R. Eddy, and D. Kurt Gaskill. "Positive Temperature Coefficient SiC PiN Diodes." Materials Science Forum 717-720 (May 2012): 981–84. http://dx.doi.org/10.4028/www.scientific.net/msf.717-720.981.
Full textLin, Jyun-Min, Ying-Chung Chen, and Chi-Pi Lin. "Annealing Effect on the Thermoelectric Properties of Bi2Te3Thin Films Prepared by Thermal Evaporation Method." Journal of Nanomaterials 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/201017.
Full textHuang, Pei, Tong Shen, Zhenxing Liu, Renjun Dian, Wanlun Xu, and Dan Wang. "Thermal characteristics analysis of medium frequency transformer under multiple working conditions." Thermal Science, no. 00 (2023): 239. http://dx.doi.org/10.2298/tsci230807239h.
Full textDissertations / Theses on the topic "Power temperature coefficient"
Sandu, Sebastian. "Developing a power dissipation model for planetary roller screws." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI096.
Full textRoller screws are highly efficient rotation-translation converters used in a variety of industries. Despite its numerous advantages, the mechanism remains complex and rather difficult to understand. The main goal of this thesis is to quantify the amount of power dissipated by standard and inverted roller screws, which is an important result for any study related to efficiency or temperature distribution. Furthermore, it is used as a design criterion in choosing optimal parameters for a given application. Due to the limited amount of available research and the restrictive assumptions made in current literature, this memoir starts with a basic geometric analysis of the mechanism and attempts to generalize threaded surface equations for different types of profiles and backlash conditions. The contact point locations can then be deduced using a very fast Newton-Raphson algorithm. This information is crucial for any subsequent force analysis. Classic Hertzian equations are then adapted to slightly conforming contacts in order to calculate the shape, size and orientation of the roller-screw and roller-nut contact ellipses. It is shown that the principal directions of curvature obtained here by differential geometry are different from the ones assumed by previous research. Next, the mechanism kinematics is investigated using a stationary model, which relates the steady-state movement of all the different components and allows a simplified calculation of the sliding velocity field at any point within the contact areas. The local motion proves to be a combination of spin and uniform sliding. The model is set to have only one degree of freedom in the form of a slip ratio, which depends on lubrication conditions and force balance equations. An experimental setup is designed to measure this ratio and thus allow comparison to numerical values, as well as the few analytical models available in the literature. Results show that measurements are very close to ideal operating conditions, which makes lubricant properties and friction coefficients the most influential parameters in the little room available for kinematic improvement. Finally, a numerical force model is developed, which calculates the power dissipated during the steady-state regime. The iterative algorithm first determines the value of the slip ratio reached during stationary equilibrium and then uses the result to deduce the other kinematic and dynamic unknowns involved. A parametric study is conducted to identify the important factors in efficiency and power dissipation, as well as their relative influence
Joseph, Jyothis. "Improving Photovoltaic Panel Efficiency by Cooling Water Circulation." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1404617/.
Full textGhorbani, Shaban Reza. "Structural and Electrical Transport Properties of Doped Nd-123 Superconductors." Doctoral thesis, KTH, Physics, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3461.
Full textIt is generally believed that one of the key parameterscontrolling the normal state and superconducting properties ofhigh temperature superconductors is the charge carrierconcentrationpin the CuO2planes.By changing the non-isovalent dopingconcentration on the RE site as well as the oxygen content in(RE)Ba2Cu3O7−δ, an excellent tool is obtained tovary the hole concentration over a wide range from theunderdoped up to the overdoped regime.In the present thesis thefocus is on the doping effects on the structural and normalstate electrical properties in Nd-123 doped with Ca, La, Pr,Ca-Pr, and Ca-Th.T he effects of doping have been investigatedby X-ray and neutron powder diffraction, and by measurements ofthe resistivity, thermoelectric powerS, and Hall coefficient RH.T he thermoelectric power is a powerful tool forstudies of high temperature superconductivity and is highlysensitive to details of the electronic band structure.Sas a function of temperature has been analyzed in twodifferent two band models.The parameters of these models arerelated to charactristic features of the electron bands and asemiempirical physical description of the doping dependence ofSis obtained.So me important results are following:
(i)The valence of Pr in the RE-123 family.Results from thestructural investigations, the critical temperature Tc, and thethermoelectric power indicated a valence +4 at low dopingconcentration, which is in agreement with results of chargeneutral doping in the RE-123 family.(ii)Hole localization. The results of bond valence sum (BVS)calculations from neutron diffraction data showed that holelocalization on the Pr+4site was the main reason for the decrease of thehole concentration p.Differ ent types of localization wereinferred by S measurements for Ca-Th and Ca-Pr dopings.(iii)Competition between added charge and disorder. Theresults of RH measurements indicated that Ca doping introduceddisorder in the CuO2planes in addition to added charge.This could bethe main reason for the observed small decrease of thebandwidth of the density of states in the description of aphenomenological narrow band model.(iv) Empirical parabolic relation between γ and p.S data were analyzed and well described by a two-band modelwith an additional linear T term, γT.An empiricalparabolic relation for γ as a function of holeconcentration has been found.
Key words:high temperature superconductors, criticaltemperature, resistivity, thermoelectric power, Hallcoefficient, X-ray diffraction, Neutron diffraction, NdBa2Cu3O7−δ, hole concentration,substitution.
Mirmasoudi, Sara. "High Temperature Transient Creep Analysis of Metals." Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1452693927.
Full textAltalidi, Sulaiman Saleh. "Two-Phase Spray Cooling with HFC-134a and HFO-1234yf for Thermal Management of Automotive Power Electronics using Practical Enhanced Surfaces." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1011876/.
Full textTorres, aguilar Moira. "Development of photovoltaic module outdoor performance indicators based on experimental platforms." Electronic Thesis or Diss., Institut polytechnique de Paris, 2024. http://www.theses.fr/2024IPPAX025.
Full textA crucial factor in accelerating the energy transition towards solar photovoltaic (PV) is the improvement of accuracy in power estimations from solar installations, the main motivation of this PhD thesis. The rating of a module is done under Standard Test Conditions (STC) (irradiance of 1000 W/m², module temperature (Tmod) of 25 °C, Air Mass of 1.5) not usually found outdoors, making it necessary to study the behavior of a PV module operating under real-life conditions.This work starts by providing a case-study of the impact of environmental factors such as irradiance (G), Tmod, snow, wind, shading, and soiling on the power output of a PV outdoor testbench and a grid-connected rooftop PV power plant, both located on the campus of École Polytechnique near Paris. Based on this analysis, different filters are proposed to clean the dataset for performance evaluation. The testbench is comprised of modules of five different technologies (a-Si/µc-Si, c-Si, CIS, HIT, CdTe). The rooftop installation has a capacity of 16.3 kWp with 52 panels of 6 different models (white and black backsheet, PERC full and half-cells, Q.ANTUM half-cells, bifacial), all based on monocrystalline silicon.Then, the performance characterization of said installations is carried out, for a 4-year period for the outdoor testbench and a 3.5-year period for the rooftop installation. This is done by utilizing performance indicators like reference yield, module yield, and performance ratio (PR), along with their temperature-corrected counterparts. Monthly PR values show diverse seasonal variation depending on the module type, some of them showing a strong degradation over time.On average, there is a 5% PR loss due to temperature effect for the c-Si-based modules and about half for the thin-film modules in the testbench. The average PR during winter, considering the temperature effect, is between 89-93 % for c-Si and HIT and between 77-90 % for thin-films. During this time, losses in PR due to shading of 10 % for the black backsheet, 15 % for the white backsheet, less than 5 % for the half-cells, and 7% for the bifacial module were observed in the rooftop installation.The PR loss for the modules in the testbench led to an estimated degradation rate in %/year of -0.12, -0.30, -0.8, -0.46, -1.88 for a-Si/µc-Si, c-Si, CIS, HIT, CdTe respectively and of 1%/year for the rooftop installation.The final analysis is the experimental retrieval of the power temperature coefficient (γ), commonly used to perform temperature corrections on PV power estimations and assumed to be constant, its STC value (γSTC) is usually taken from the module’s datasheet. Thus, this work studies its dependence on G (γG) and analyzes the possibility of using γG in a PV power estimation model to improve its accuracy. This is done for different data sources of G (pyranometer, photodiode, retrieved from short-circuit current measurements, modelled from global-direct-diffuse irradiance) and Tmod (measured, retrieved from open-circuit voltage measurements). The results showed a dependence of γ on the level of G, the irradiance sensor providing the measurements utilized for its computation, and the filters used to clean the data. Using a γG calculated with pyranometer or modelled irradiances and a measured Tmod yielded no improvement on the power estimation for the testbench modules whereas one using photodiode measurements reduced the relative mean absolute error (rMAE) by up to 2.9 %, proving more adequate for c-Si technologies. Furthermore, computing γG using a G and Tmod estimated from the module’s I-V curve measurements resulted in a decrease of rMAE of up to 3.6%, a method proving to be adequate for c-Si technologies and useful in compensating for degradation in thin-film modules. However, the improvements were modest, a 1% betterment of the total power estimation for the testbench
Філянін, Данило Володимирович. "Методи і засоби інформаційного забезпечення режимів електричних мереж в умовах низької якості електроенергії." Thesis, Національний технічний університет України "Київський політехнічний інститут імені Ігоря Сікорського", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/40949.
Full textThesis for the PhD degree in technical sciences, Specialty 05.14.02 – power plants and electric power complexes. National technical university of Ukraine "Kyiv polytechnic institute", Kyiv, 2019. The thesis is oriented to the scientific and applied problem - harmonic distortion sources detection in distribution systems (DS), improving the electromagnetic compatibility of electrical equipment, increasing the reliability of electric power supply by creating a diagnostic and control system. The use of distributed measurements to distortions source detection is justified. A modification of the method of harmonic analysis is developed to increase the reliability of distortions sources detection. Based on the study’s results, methods for distributing compensation payments between DS`s subjects that consume harmonics power are proposed. A number of recommendations on the practical application of the results of the thesis work have been developed. A method for indirect monitoring of the temperature of cable lines is proposed.
Філянін, Данило Володимирович. "Методи і засоби інформаційного забезпечення режимів електричних мереж в умовах низької якості електроенергії." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/40946.
Full textThesis for the PhD degree in technical sciences, Specialty 05.14.02 – power plants and electric power complexes. National technical university of Ukraine "Kyiv polytechnic institute", Kyiv, 2019. The thesis is oriented to the scientific and applied problem - harmonic distortion sources detection in distribution systems (DS), improving the electromagnetic compatibility of electrical equipment, increasing the reliability of electric power supply by creating a diagnostic and control system. The use of distributed measurements to distortions source detection is justified. A modification of the method of harmonic analysis is developed to increase the reliability of distortions sources detection. Based on the study’s results, methods for distributing compensation payments between DS`s subjects that consume harmonics power are proposed. A number of recommendations on the practical application of the results of the thesis work have been developed. A method for indirect monitoring of the temperature of cable lines is proposed.
Záboj, Jakub. "Návrh vytápění a ohřevu teplé vody v rodinném domě." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229674.
Full textSaulich, Sven. "Generic design and investigation of solar cooling systems." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/13627.
Full textBook chapters on the topic "Power temperature coefficient"
Shang, Chao-hao, You-sen Hu, Yuan-xiong Guo, Chang-ying Li, and Jun Chen. "The Main Reason of SG Thermal Power Imbalance Between Each Loop in CPR1000 Nuclear Power Plants." In Springer Proceedings in Physics, 231–42. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1023-6_22.
Full textDemazière, C., and I. Pázsit. "On-line Determination of the MTC (Moderator Temperature Coefficient) by Neutron Noise and Gamma-Thermometer Signals." In Power Systems, 135–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04945-7_10.
Full textHuang, Yuxuan, Ruihuang Wu, Bingjun Xiong, Zhipeng Li, Jia Liu, Yun Zou, Jingjing Liu, and Xinghua Sun. "An Ultra-Low Power CMOS Subthreshold Voltage Reference with Temperature Coefficient Compensation." In Lecture Notes in Electrical Engineering, 187–97. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-2636-3_15.
Full textLiu, Ze, Sichuan Xu, and Baitao Zhang. "Development and Validation of a 100 kW-Class Fuel Cell System Controller for Passenger Cars." In Proceedings of the 10th Hydrogen Technology Convention, Volume 1, 69–75. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-8631-6_7.
Full textMukherjee, Koyel, Soumya Pandit, and Rajat Kumar Pal. "Further Improved 198 nW Ultra-Low Power 1.25 nA Current Reference Circuit with an Extremely Low Line Sensitivity (0.0005%/V) and 160 ppm/$$^\circ $$C Temperature Coefficient." In Lecture Notes in Networks and Systems, 357–67. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2680-0_31.
Full textZerrouk, I., S. G. Ionov, V. P. Popov, and S. Hamamda. "Anisotropy of Thermal Expansion Coefficient of Pressed Graphite Foam Measured over the Temperature Interval 20-500°C." In Progress in Powder Metallurgy, 241–44. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-419-7.241.
Full textAbdurakhmanov, Gulmurza, Dibya Prakash Rai, and Gulbahor Vokhidova. "Modern Physics of the Thermoelectric Phenomena: Achievements and Problems." In New Materials and Devices for Thermoelectric Power Generation [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.1002721.
Full text"Construction and Operating Parameters of Adsorptive Chillers." In Technology Development for Adsorptive Heat Energy Converters, 251–89. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-4432-7.ch008.
Full textHooton, Brian. "Reactor Operations and Control." In Understanding Nuclear Reactors, 69–80. Oxford University PressOxford, 2024. http://dx.doi.org/10.1093/oso/9780198902652.003.0007.
Full textLock, G. S. H. "The Simple, Tubular Thermosyphon." In The Tubular Thermosyphon, 35–102. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780198562474.003.0002.
Full textConference papers on the topic "Power temperature coefficient"
Loaiza, David, F. Eric Haskin, Albert C. Marshall, Mohamed S. El-Genk, and Mark D. Hoover. "TOPAZ II Temperature Coefficient Analyses." In SPACE NUCLEAR POWER AND PROPULSION: Eleventh Symposium. AIP, 1994. http://dx.doi.org/10.1063/1.2950131.
Full textKawauchi, Yuma, Kenji Akimoto, Akihiko Watanabe, and Ichiro Omura. "DUT Temperature Coefficient and Power Cycles to Failure." In 2021 33rd International Symposium on Power Semiconductor Devices and ICs (ISPSD). IEEE, 2021. http://dx.doi.org/10.23919/ispsd50666.2021.9452298.
Full textDa-Eun Jeong, Jae-Sub Ko, Jin-Gook Lee, Hak-Gyun Jeong, Dae-Kyong Kim, and Dong-Hwa Chung. "MPPT control of photovoltaic system with temperature coefficient." In 2012 IEEE Vehicle Power and Propulsion Conference (VPPC). IEEE, 2012. http://dx.doi.org/10.1109/vppc.2012.6422602.
Full textFord, R., and M. Kahn. "Positive Temperature Coefficient Resistors as High Power Pulse Switches." In Sixth IEEE International Symposium on Applications of Ferroelectrics. IEEE, 1986. http://dx.doi.org/10.1109/isaf.1986.201230.
Full textWu, Zhenxing, Yu Wu, Yunpeng Jia, Feifei Tian, Yin Liu, and Yueyang Liu. "Research to Improve the Forward Temperature Coefficient of FRD." In 2010 Asia-Pacific Power and Energy Engineering Conference. IEEE, 2010. http://dx.doi.org/10.1109/appeec.2010.5448583.
Full textIshii, R., H. Tsuchida, K. Nakayama, and Y. Sugawara. "20V-400A SiC Zener Diodes with Excellent Temperature Coefficient." In 19th International Symposium on Power Semiconductor Devices and Ics. IEEE, 2007. http://dx.doi.org/10.1109/ispsd.2007.4294986.
Full textMamaev, Boris I., and Mikhail M. Petukhovskiy. "Gas Temperature Profile Attenuation Through a Multistage Axial-Flow Turbine." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59033.
Full text"A Low Temperature Coefficient and Low Power Voltage Detector for Energy Harvesting." In 2021 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE, 2021. http://dx.doi.org/10.1109/iscas51556.2021.9401120.
Full textNing Li and Peng Jin. "Voltage-temperature coefficient analysis and testing of high power light-emitting diodes." In 2013 10th China International Forum on Solid State Lighting (ChinaSSL). IEEE, 2013. http://dx.doi.org/10.1109/sslchina.2013.7177333.
Full textPakravan, Elaheh, Mortaza Mojarad, and Behboud Mashoufi. "A Low-Power Bandgap Voltage Reference Circuit With Ultra-Low Temperature Coefficient." In 2023 5th Iranian International Conference on Microelectronics (IICM). IEEE, 2023. http://dx.doi.org/10.1109/iicm60532.2023.10443209.
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