A kind of inductive energy storage pulse power supply using superconducting pulse transformer

Abstract

The invention relates to an inductance energy storage pulse power supply utilizing a superconducting pulse transformer, which belongs to the technical field of pulse power. It is characterized in that it includes a superconducting pulse transformer, a primary power supply is arranged on the primary side of the superconducting pulse transformer, and the output terminal of the primary power supply is simultaneously connected to the conversion branch, the freewheeling branch and the primary side of the superconducting pulse transformer through a controllable switch S1 At both ends of the winding, there is also an energy recovery branch connected between the conversion branch and the primary power supply; on the secondary side of the superconducting pulse transformer, one end of the secondary winding is connected to one end of the load control branch, and the other end of the secondary winding One end is connected to at least one set of superconducting energy storage inductance charging branch and one end of the switching branch at the same time, and the load control branch, the superconducting energy storage inductance charging branch and the other end of the switching branch are connected at one place. The inductive energy storage pulse power supply using superconducting pulse transformer adopts multi-module superconducting energy storage inductance to release more energy to the load, and at the same time solves the problem of overvoltage at the moment of switching.

Description

technical field [0001] The invention relates to an inductance energy storage pulse power supply utilizing a superconducting pulse transformer, which belongs to the technical field of pulse power. Background technique [0002] Pulse power technology is a technology that quickly compresses and converts slowly stored energy, and finally effectively releases it to the load. After more than half a century of development, pulse power technology has gradually extended from high-tech and national defense research fields to industrial and civilian fields. In the existing technology, energy storage methods in pulse power technology are mainly divided into inductive energy storage and capacitive energy storage. Capacitive energy storage has the advantages of simple structure and mature technology, but its energy storage density is low, the volume is large, and the leakage current is large. , not suitable for long-term storage. [0003] High-temperature superconducting energy storage ...

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Problems solved by technology

[0005] In the prior art, Wu Rui, Cheng Zhi, Gui Zhixing, Li Haitao, Yan Zhongming, Wang Yu, Research on current zero-crossing open circuit based on the working mode of high-temperature superconducting hybrid pulse transformer, Journal of Low Temperature Physics, 2012, 34 (5): 342-346, proposed a new switch breaking method based on the hybrid pulse transformer (HPPT) working mode, this method uses the current zero-crossing instant break mode commutation, that is, an external circuit is used to offset the current flowing through the switch to zero , and then disconnect the switch instantaneously, so that the switch will not be subjected to high-amplitude overvoltage when the switch is disconnected. The method of direct current cutoff will produce a large arc that affects the turn-off loss, and a high-peak overvoltage pulse will be generated at the moment of disconnection. However, the circuit has The following problems: (1) It uses the quench of the primary winding of the superconducting pulse power transformer to cause the current in the inductor to decay rapidly, so that the pulse current is induced in the secondary winding of the pulse transformer

However, if it is necessary to obtain a large pulse current output, a very large quench resistance is required, which puts forward very high requirements on the material properties of the superconductor and the quench trigger technology, and repeated use of the superconducting inductive quench will make the superconductor The lifetime of the inductor is reduced

(2) The current flowing through the switch in the external circuit is offset to zero, which is achievable in principle, but it is difficult to achieve in actual engineering

(3) The energy storage inductor is in the form of a single module, and the stored energy is limited

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