Energy feed conversion device having low-temperature coil

Abstract

The invention discloses an energy feed conversion device with a low-temperature coil, relates to the technical field of electromagnet excitation. The energy feed conversion device comprises a cold source module, a vacuum module, an external energy module, an internal energy module and a connecting module, the cold source module is configured to provide a cold source for the vacuum module, the external energy module is configured to be located outside the vacuum module, the internal energy module is configured to be located inside the vacuum module, and the internal energy module and the external energy module are configured to be connected through the connecting module. The energy feed conversion device with the low-temperature coil further comprises a refrigerant module, the refrigerant module is configured to be located in the vacuum module, and the internal energy module is configured to be located in the refrigerant module. The connection module comprises a power electronic converter, the power electronic converter comprises a large current unit and a small current unit, the small current unit is configured to be located outside the vacuum module, and the large current unit isconnected with the internal energy module through a large current lead.

Description

technical field [0001] The invention relates to the technical field of electromagnet excitation, in particular to an energy feeding conversion device with a low-temperature coil. Background technique [0002] The phenomenon of superconductivity was discovered in 1911, and due to its excellent properties such as zero resistance, it quickly attracted the attention of researchers all over the world. The critical temperature of superconducting materials can reach 20K-77K or even higher, and some materials can enter the superconducting state in the liquid nitrogen environment. At present, some superconducting materials have been mass-produced in an industrialized manner. Due to their zero-resistance characteristics, superconducting coils wound with superconducting materials can be produced under DC excitation, which is impossible for coils wound with traditional copper wires. Magnetic field strength, and in some occasions, under the same magnetic field strength, it can be much l...

AI Technical Summary

Problems solved by technology

[0012] (1) It solves the problems that the existing low-temperature coil open-loop excitation technology (prior art 1) has a large calorific value of the current lead, which leads to a large capacity of the refrigerator required, and the coil system is too bulky, etc.

Open-loop operation can solve the problems of ultra-low-resistance or non-resistance joint manufacturing process difficulties during closed-loop operation, and the operating current is relatively low compared with open-loop technology under the same conditions (the utilization rate of superconducting materials is not high).

[0013] (2) It solves the relatively complex excitation system existing in the existing superconducting coil closed-loop excitation technology (prior art 2), and the problems that the current lead heat is still relatively large during excitation.

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