Research on multi-switch synchronization based on single trigger generator

There is an increasing interest in synchronization of multiple spark gap switches while maintaining compact geometry, less-complex circuit, and low jitter switching performances. A study of the effect of electrical parameters on switching performances is necessary for the operation of a large number of simultaneous switches. A miniaturized trigatron switch assembly (Outer diameter: 35 mm and thickness: 5 mm) is developed and experimentally investigated for switching performance. A polyether ether ketone insulator and brass conductor electrodes are utilized due to their high insulation and solderable properties, respectively. Important switching parameters, delay time, switch time delay, jitter in delay time, discharging peak current, trigger break down time, and trigger break down voltage, are studied under four typical conditions. These four conditions are: (a) a fast trigger (FT) with normal circuit inductance (10 ns, 20 nH); (b) a fast trigger with higher circuit inductance (10 ns and 500 nH); (c) a slow trigger (ST) with normal circuit inductance (250 ns and 20 nH) and (d) a slow trigger with higher circuit inductance (250 ns and 500 nH). Subsequently, three trigatron spark gaps (4 kV, 5 kA, >100 shots, 4 nH, and 20 mΩ) are simultaneously switched within 5 ns time. Many experimental results are the first of their kind in terms of compact switch development, switching performance, and single electrical trigger based synchronization. This paper will also add a good value to presently available knowledge through systematically implementing the simultaneous switching condition for the generation of 5 kA, 50 ns current pulses. These low cost (US$40) trigatron switches can be utilized in low energy, compact pulsed power applications.

show abstract

Development of miniaturized trigatron switch and experimental investigation of its switching performance

Sharma

Chavan

Marathe

et al. 2020

Review of Scientific Instruments

View full text Add to dashboard Cite

show abstract

Plasma triggered spark gap switch for multiple switch synchronization

Kanchi

Shukla

Sharma

2020

Review of Scientific Instruments

View full text Add to dashboard Cite

A four-electrode plasma based triggered spark gap switch is designed for pulsed power applications, which consists of an anode and cathode of a main spark gap switch and an anode and cathode for a trigger pin. The anode and cathode of the trigger pin are coaxially arranged, and the gap between electrodes is 25 μm. A trigger voltage of 200 V is applied across the trigger gap with the help of a switching insulated gate bipolar transistor. With the breakdown of the trigger gap, plasma is generated, which is injected into the main gap. The trigger pin is placed axisymmetric to the main spark gap in the cathode. The main discharge channel of the spark gap has 0.6 mm space between two electrodes, which is charged to 1000 V. When the spark gap is triggered, the discharge current has a peak value of 6.1 kA with a quarter cycle time period of 0.97 µs. The four-electrode spark gap switch results are compared with those of a three-electrode trigatron switch, which has the peak current of 6 kA with 1.01 µs as quarter-cycle time period. Four similar four-electrode spark gap switches are triggered with the same scheme and synchronized within 10 ns as peak values of currents with jitter as less than 5 ns.

show abstract

The influence mechanism of leakage inductance and distributed capacitance on nanosecond pulse transformer-type trigger

Lu,

Liu,

Wang

et al. 2024

AIP Advances

View full text Add to dashboard Cite

The pulse trigger generator exerts a significant impact on the Marx generator’s output pulse (OP). In this paper, a pulse transformer (PT)-type trigger device is intended to give a pulse of front steepness below 30 ns, a half-width of more than 300 ns, and a magnitude of 50 kV to a 4 MV Marx generator. A steepening circuit is modeled on the output side of the PT equivalent circuit to reduce the OP front steepness, establishing the model of a closed-core PT-type trigger generator. The influence of distributed capacitance and leakage inductance (parasitic parameters) of the PT winding on the OP magnitude, triggering delay time, and front steepness are analyzed, and the design scheme of the PT is decided accordingly. Then, the pulse trigger generator model is simulated, and the trigger pulses are obtained in accordance with the design index. The OP waveforms are tested using a newly developed pulse trigger device prototype.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Research on multi-switch synchronization based on single trigger generator

Cited by 4 publications

References 10 publications

Development of miniaturized trigatron switch and experimental investigation of its switching performance

Development of miniaturized trigatron switch and experimental investigation of its switching performance

Plasma triggered spark gap switch for multiple switch synchronization

The influence mechanism of leakage inductance and distributed capacitance on nanosecond pulse transformer-type trigger

Contact Info

Product

Resources

About