A device and method for generating flat-top pulsed strong magnetic field with multi-power supply coordinated power supply

Abstract

The present invention provides a device and method for generating a flat-top pulsed strong magnetic field by cooperative power supply of multiple power sources, which mainly includes: a high-voltage capacitor power supply consisting of a high-voltage capacitor bank and a thyristor; a battery power supply consisting of a battery pack, a first DC circuit breaker and The supercapacitor power supply is composed of a supercapacitor bank, a second DC circuit breaker and a multi-phase interleaved parallel DC / DC converter; a high-voltage isolation unit; a freewheeling branch; a magnet; the working process is as follows. The magnet is discharged to make its current rise rapidly, and then when the voltage of the high-voltage capacitor bank is lower than the voltage of the battery pack, the two commutate. The device performs negative feedback control on the magnet current to generate a flat-top magnetic field. After the discharge is completed, the magnet energy is released by the freewheeling circuit. In summary, high stability, long duration, and high flat-top ratio flat-top pulsed magnetic field are generated.

Description

technical field [0001] The invention belongs to the technical field of pulse power, and more specifically relates to a device and method for generating a flat top pulse strong magnetic field through cooperative power supply of multiple power sources. Background technique [0002] With the rapid development of science and technology, pulsed strong magnetic field, as an extreme experimental environment, has become an indispensable research condition for basic frontier scientific research. Specific heat measurement, nuclear magnetic resonance (Nuclear Magnetic Resonance, NMR), high-power gyrotron terahertz source and many other scientific experiments and cutting-edge technologies not only have extremely high requirements on the strength and stability of the magnetic field, but also the longer the duration of the magnetic field, the more favorable The realization of scientific research. For example: in NMR and specific heat measurement, the duration of the magnetic field needs ...

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Problems solved by technology

[0010] Aiming at the defects of the prior art, the object of the present invention is to provide a device and method for generating a flat-top pulse strong magnetic field with multi-power supply cooperative power supply, aiming at solving the problem that the existing flat-top pulse magnetic field is difficult to take into account the stability and flat-top duration of the flat-top The problem of small proportion and low efficiency

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