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Design of a Rogowski Coil with a magnetic core Used for Measurements of Nanosecond Current Pulses

Plasma Science and Technology 2006年第4期8卷 457-460页

作者：朱俊栋张乔根贾江波陶风波杨连殿杨兰均 State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong UniversityXi'an 710049China

A Rogowski coil is developed to detect the nanosecond pulse signals of the discharge current with a wide bandwidth of 800 kHz to 106 MHz and high sensitivity of 2.22 V/A. Performance tests show that the Rogowski coil has both excellent dynamic and static characteristics. Calibrating results and the comparison between the standard current shunt and the developed Rogowski coil for the measurement of nanosecond discharge pulses demonstrate that the developed Rogowski coil can reproduce the actual waveform of the discharge current accurately.

关键词： Rogowski coil magnetic core measurement nanosecond current pulses

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Fabrication of solenoid-type microinductor with different magnetic core schemes by MEMS technique

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High Technology Letters 2006年第3期12卷 260-262页

作者：高孝裕 Zhou Yong Chen Ji＇ an Lei Chong Zhao Xiaolin National Key Laboratory of Nano/Micro Fabrcation Teclmology Key Laboratory for Thin Film and Microfabrication of Ministry of Education Institute of Micro and Nano Science and Teehnology Shanghai Jiaotong University Shanghai 200030 P.R. China

Two micromachined solenoid-type inductors with different electroplated core structures, ellipse and rectangle, were fabricated, tested and compared in order to reach optimum designs for integrated induetoes and transformers. In the process of fabrication, UV-LIGA, dry. etching technique, fine polishing and eleetroplating techniques have been adopted to achieve high performance mieminduetor. Experimental results show that both types of the induetors are characterized by high inductance, Q-factor and low electrical resistance. While the inductance of the inductor with rectangular magnetic core is slightly higher than that with elliptical magnetic core, the quality factor of the latter is larger than that of the former.

关键词： microelectromechanical system (MEMS) inductance quality factor (Q-factor) microinductor magnetic core

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Newly-modeled graphene-based ternary nanocomposite for the magnetophotocatalytic reduction of CO_(2) with electrochemical performance

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Frontiers of Chemical Science and Engineering 2022年第10期16卷 1438-1459页

作者： Zambaga Otgonbayar Kwang Youn Cho Chong-Hun Jung Won-Chun Oh Department of Advanced Materials Science&Engineering Hanseo UniversitySeosan-Si 31962Korea Korea Institutes of Ceramic Engineering and Technology Jinju-Si 660031Korea Decommissioning Technology Research Division Korea Atomic Energy Research InstituteDaejeon 305-600Korea Anhui International Joint Research Center for Nano Carbon-based Materials and Environmental Health College of Materials Science and EngineeringAnhui University of Science&TechnologyHuainan 232001China

The development of CO_(2)into hydrocarbon fuels has emerged as a green method that could help mitigate global *** novel structured photocatalyst is a promising material for use in a photocatalytic and magneto-electrochemical method that fosters the reduction of CO_(2)by suppressing the recombination of electron−hole pairs and effectively transferring the electrons to the surface for the chemical reaction of CO_(2)*** our study,we have developed a novel-structured AgCuZnS_(2)–graphene–TiO_(2)to analyze its catalytic activity toward the selective evolution of CO_(2).The selectivity of each nanocomposite substantially enhanced the activity of the AgCuZnS_(2)–graphene–TiO_(2)ternary nanocomposite due to the successful interaction,and the selectivity of the final product was improved to a value 3 times higher than that of the pure AgCuZnS_(2)and 2 times higher than those of AgCuZnS_(2)–graphene and AgCuZnS_(2)–TiO_(2)under ultraviolet(UV)-light(λ=254 nm)irradiation in the photocatalytic *** electrochemical CO_(2)reduction test was also conducted to analyze the efficacy of the AgCuZnS_(2)–graphene–TiO_(2)when used as a working electrode in laboratory electrochemical *** electrochemical process was conducted under different experimental conditions,such as various scan rates(mV·s^(–1)),under UV-light and with a 0.07 T *** evolution of CO_(2)substantially improved under UV-light(λ=254 nm)and with 0.07 T magnetic-core treatment;these improvements were attributed to the facts that the UV-light activated the electron-transfer pathway and the magnetic core controlled the pathway of electrontransmission/prevention to protect it from chaotic electron *** all tested nanocomposites,AgCuZnS_(2)–graphene–TiO_(2)absorbed the CO_(2)most strongly and showed the best ability to transfer the electron to reduce the CO_(2)to *** believe that our newly-modeled ternary nanocomposite opens up new opportunities for the evolution of C

关键词： ternary nanocomposite photocatalytic electrochemical CO_(2) reduction UV-light magnetic core

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Transverse Flux Induction Coil for Uniform Bar Heating Excluding Edge

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Journal of Iron and Steel Research International 2012年第S2期19卷 754-757页

作者： PARK Jong-Soo BAE Jin-Su CHO Un-Kwan HA Tae-Jong KIM Goo-Hwa Process Engineering Design Research Group Engineering Research Center

This work particularly focuses on compensating Joule heat in under-heated areas occurred when thin steel bar is(<20 mm)heated by transverse flux induction heater(TFIH).The under-heated areas take place in range of 50~... 详细信息

This work particularly focuses on compensating Joule heat in under-heated areas occurred when thin steel bar is(magnetic core is proposed and optimized to supplement this *** solutions on the electromagnetic field are obtained numerically by commercial code MAXWELL 3D software from ANSYS *** then,verified experimentally by pilot-scale tests,in which the TFIH was manufactured with a nominal power of 100 kW at a fundamental frequency of 1 ***,TFIC having geometrically the optimized magnetic core made the heating pattern U-shaped,so could supply a desirable temperature profile for the rolling process.

关键词： Transverse Flux Induction heating(TFIH) induction coil magnetic core uniform heating

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