Analysis of flux concentration phenomena in eddy-current type A.C. high magnetic field generator.

The article describes the possibility of generating a micro and sub-microsecond magnetic impulse reaching 1–10 T, investigates various configurations of microcoils and discusses the principal circuit of a magnetic field impulse generator of microsecond duration. The transient processes of current, temperature and magnetic field are calculated applying the finite element method. Santrauka Nagrinėjamas mikrosekundinės ir submikrosekundinės trukmės magnetinių impulsų, siekiančių 1–10 T, generavimas. Pateikta mikrosekundės trukmės magnetinių impulsų generatoriaus, kuris susideda iš mikroritės, mažą parazitinį induktyvumą turinčio kondensatoriaus ir greitų didelės galios MOSFET raktų principinė valdymo schema. Pereinamiesiems srovės, įtampos, elektromagnetinio lauko ir termodinaminiams vyksmams gauti taikomi analizinis ir baigtinių elementų skaičiavimo metodai. Straipsnyje pateikti elektromagnetinio lauko pasiskirstymo skaičiavimo rezultatai.

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A Repeated Pulsed High Magnetic Field Generator for Frequency-Tunable Terahertz Sources

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.516-517.1897 ◽

2012 ◽

Vol 516-517 ◽

pp. 1897-1901 ◽

Cited By ~ 1

Author(s):

Huan Li ◽

Hong Fa Ding ◽

Hou Xiu Xiao

Keyword(s):

Magnetic Field ◽

High Magnetic Field ◽

Heat Dissipation ◽

Pulse Repetition Frequency ◽

Terahertz Sources ◽

In Series ◽

Gate Driver ◽

Frequency Tunable ◽

Magnetic Field Generator ◽

Pulsed High Magnetic Field

This paper presents a Repeated Pulsed High Magnetic Field (RPHMF) generator for frequency-tunable terahertz sources, which mainly consists of a charging power supply, a capacitor bank, a discharging switch, a bitter magnet and other facilities. The four thyristors (80 mm, 4 kV) in series with a self-supplied gate driver are taken as the discharge switch which can be triggered when the high voltage capacitor C was charged to 300 V. Meanwhile, a bitter magnet with fast heat dissipation was designed and fabricated. According to the experiment, the designed system has a pulse repetition frequency of 0.1 Hz with a maximum magnetic field of 9 T.

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Laminated eddy-current type solenoid coil for the alternating high magnetic field

10.1109/intmag.1990.734917 ◽

1990 ◽

Author(s):

M. Enokizono ◽

T. Todaka ◽

S. Haseba ◽

K. Bessho

Keyword(s):

Magnetic Field ◽

High Magnetic Field ◽

Eddy Current ◽

Solenoid Coil

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The experimental research on explosively high magnetic field generator

2012 14th International Conference on Megagauss Magnetic Field Generation and Related Topics (MEGAGAUSS) ◽

10.1109/megagauss.2012.6781415 ◽

2012 ◽

Author(s):

Zhuowei Gu ◽

Hao Luo ◽

Hengdi Zhang ◽

Shichao Zhao ◽

Xiaosong Tang ◽

...

Keyword(s):

Magnetic Field ◽

High Magnetic Field ◽

Experimental Research ◽

Magnetic Field Generator

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Construction of the Pulsed High Magnetic Field Generator up to 33T and the Enhancements of the Magnetic Coercivity in High Fields

Materials Science Forum ◽

10.4028/www.scientific.net/msf.721.41 ◽

2012 ◽

Vol 721 ◽

pp. 41-46 ◽

Cited By ~ 1

Author(s):

Yasushi Nakahata ◽

Koji Yamada ◽

Jiao Lian Luo ◽

Hiroyasu Shimoji ◽

Bartosz E. Borkowski ◽

...

Keyword(s):

Magnetic Field ◽

High Magnetic Field ◽

Permanent Magnets ◽

Pulsed Magnetic Field ◽

Pulsed Field ◽

High Fields ◽

Magnetic Field Generator ◽

Pulsed High Magnetic Field ◽

Negative Field

M-Heff full curves up to 19T for the permanent magnets composed of Nd-Fe-B were very precisely observed by using specially designed magnetizer. The pulsed magnetic field directions were safely reversed with the same coil-end to ground side of coil positive and negative field directions. The coercivity enhancements were observed by 15% in high pulsed field applications.

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