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A Repetitive Frequency Square Wave Generator Based on Magnetic Switch

A square wave generator, repetition frequency technology, applied in pulse train generator, pulse generation, electric pulse generation and other directions, can solve problems such as difficulty in adapting to development needs, and achieve the effect of reducing volt-second product requirements and fast charging

Active Publication Date: 2015-08-05
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned square wave pulse generating device with PFL (pulse forming line) as the key component, the pulse forming switch is mostly a gas switch, and the repetitive working frequency can reach the order of 100Hz at most, which is difficult to meet the current industrial development needs

Method used

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  • A Repetitive Frequency Square Wave Generator Based on Magnetic Switch
  • A Repetitive Frequency Square Wave Generator Based on Magnetic Switch
  • A Repetitive Frequency Square Wave Generator Based on Magnetic Switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] see figure 1 , figure 2 , forming a linear typical Marx generator based on a magnetic switch, including a pulse source with adjustable frequency pulse width; a magnetic pulse compression circuit; forming a linear Marx generator based on a magnetic switch; matching load four parts, among which the linear Marx generator The structure is:

[0046] N-level PFLs are charged in parallel, and the shielding layer (skin) and core port at one end of each level of PFL are connected to the circuit through a pair of coupled inductors, and the pair of coupled inductors is connected to the PFL with the same name, N-level PFL and its coupled inductor The relevant parameters of the pair should be exactly the same, and the direction of the same-named end of the coupled inductor on each side of the N-level PFL circuit should be consistent. The connection method of all levels of PFLs discharged in series through magnetic switches is as follows: the charging current inflow terminal of th...

Embodiment 2

[0053] Figure 5 Shown is the circuit topology diagram of the two-stage forming line charging and discharging port isolation type Marx generator. Compared with the circuit topology of the two-stage forming line type Marx generator based on magnetic switches, the connection method of the magnetic switch is changed: PFL 5 with PFL 6 The first end is connected to the circuit through a coupled inductor, and the tail end is connected in series through a magnetic switch to discharge to a matching load.

[0054] The connection method of the magnetic switch at the end is as follows: the wire core at the end of the first-stage PFL is grounded through MS7, and the end wire sheath of the n-stage PFL is connected to the end wire core of the n+1-stage PFL through a magnetic switch. The small inductance of the coupling inductance during the charging process is equivalent to a short circuit, the large inductance of the magnetic switch is equivalent to an open circuit, and the Marx generator...

Embodiment 3

[0057] Figure 6 Shown is the circuit topology of the two-stage magnetic switch parallel charging type Marx generator. Compared with the circuit topology of the two-stage magnetic switch-based linear Marx generator, the positions of the magnetic switch and the PFL are reversed. Magnetic switch MS through a coupled inductance 10 -MS 12 Perform parallel charging.

[0058] The advantage of the two-stage magnetic switch parallel charging type Marx generator is that the original circuit topology works as the magnetic switch MS 10 -MS 12 Impedance and PFL 9 -PFL 10 The impedance is relatively small, and the MS 10 -MS 12 A large current will flow, causing the current flowing through each coupled inductor to be different, so that the magnetic flux is unbalanced, and the PFL 9 -PFL 10 Charging consistency becomes poor. Figure 6 When a large current flows through the magnetic switch, the topological structure will improve the magnetic flux balance of the coupled inductor, the...

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Abstract

The invention discloses a repetition frequency voltage-multiplying square-wave generator based on a magnetic switch. The repletion frequency voltage-multiplying square-wave generator comprises an adjustable pulse source, a magnetic pulse compressor circuit, a square-wave voltage multiplying Marx generator and a matched load. The square-wave generator is connected behind a main capacitor or pulse transformer in a cascading manner, is subjected to parallel charging to various stages of pulse forming lines, and then subjected to series discharging to the matched load so as to obtain output square-wave pulse, and therefore purposes of voltage multiplying, high-repetition frequency and rising edge compression are achieved. The magnetic switch serves as a pulse forming switch and substitutes for a conventional gas switch. Due to the fact that the magnetic switch has no problems of electrode erosion and insulation restoration, the generator can run at high-repetition frequency. In the following embodiment, the square-wave source can reach the repetition working frequency over 20 kHz which is much higher than the 100Hz-level repetition working frequency of a conventional square-wave source based on the pulse forming lines. In addition, the magnetic switch also has an effect of sharpening rising edges of square waves.

Description

technical field [0001] The invention belongs to the technical field of pulse square wave generators, and relates to a voltage doubler square wave generator based on the repetition frequency of a magnetic switch. Background technique [0002] Due to the urgent application needs of civil industry, environmental protection, medical research and national defense and military fields, the square wave pulse power source has ushered in a peak period of development, which puts forward stricter requirements on power level, rise time, and especially repetitive working frequency. The traditional square wave source using the pulse forming line as the pulse forming element is difficult to obtain a high repetition rate, and can achieve a repetition rate of the order of 100H at most. [0003] Document 1 (Harjes H, Reed K, Buttram M, et al. The Repetitive High Energy Pulsed PowerModule[C], 19th International Power Modulator Symposium, 1990.) proposed a pulsed square wave source based on a pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K3/017H03K3/64
Inventor 丁卫东吴佳玮任航
Owner XI AN JIAOTONG UNIV
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