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Flat-top-like wave pulse high-intensity magnetic field generating device and method

A generation device and flat-top wave technology, applied in the direction of magnetic resonance measurement, etc., to achieve the effect of high waveform quality, slow change of discharge waveform, and long duration

Pending Publication Date: 2022-01-04
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

[0010] The technical problem to be solved by the present invention is that the prior art flat-top wave pulse strong magnetic field generator mostly adopts a double-coil or multi-coil structure, and a relatively complex feedback control structure is used to realize the flat-top wave, which has high system cost and slow magnet energy transfer. , The waveform quality is not high or the flat-top band lasts for a short time

Method used

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  • Flat-top-like wave pulse high-intensity magnetic field generating device and method

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Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the present invention Examples, not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0034] Such as Figure 7 As shown, a kind of flat-top wave pulse strong magnetic field generating device includes a low-voltage capacitor bank, a low-voltage freewheeling branch, a high-voltage capacitor bank, a high-voltage freewheeling branch, a zero-crossing DC switch, and a single-coil magnet. The single-coil magnet includes Magnet coil L and resistor R, the low-voltage capa...

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Abstract

The invention discloses a flat-top-like wave pulse high-intensity magnetic field generating device and method. The device comprises a low-voltage capacitor bank, a low-voltage follow current branch, a high-voltage capacitor bank, a high-voltage follow current branch, a zero-crossing direct-current switch and a single-coil magnet, the single-coil magnet comprises a magnet coil L and a resistor R, the low-voltage capacitor bank is connected with the low-voltage follow current branch in parallel, the high-voltage capacitor bank is connected with the high-voltage follow current branch in parallel, the low-voltage follow current branch is connected with the high-voltage follow current branch in series, and the non-series-connection end of the high-voltage follow current branch is connected with the non-series-connection end of the low-voltage follow current branch through the zero-crossing direct-current switch, the resistor R and the magnet coil L. The device has the advantages that flat-top-like waves are achieved through a simple structure, the system manufacturing cost is low, the waveform quality is high, and the flat-top wave band maintaining time is long.

Description

technical field [0001] The present invention relates to the technical field of pulsed strong magnetic field devices, and more particularly relates to a device and method for generating flat top wave pulsed strong magnetic field. Background technique [0002] Strong magnetic fields provide extreme experimental conditions for modern scientific research and are important scientific experiment platforms. Strong magnetic fields are divided into pulsed strong magnetic fields and steady-state strong magnetic fields. Pulsed strong magnetic fields can provide higher strength (>45T) magnetic fields, which can better meet certain requirements Some requirements for high-intensity magnetic field scientific experiments. However, ordinary pulsed strong magnetic fields are time-varying, and some scientific experiments, such as nuclear magnetic resonance (NMR) and specific heat experiments, require a relatively stable magnetic field for a period of time. For this reason, scientists have p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/38
CPCG01R33/38
Inventor 刘小宁费伟宋敏慧王灿徐烟红
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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