Coupling Analysis and Research of Multistage SICL Based on Crowbar Circuit

Guan, Shaohua; Wang, Dong; Guan, Xiaocun; Li, Wei-Chen; Gao, Tian; Qiu, Liyuan

doi:10.1109/tps.2020.3016658

Cited by 5 publications

(2 citation statements)

References 20 publications

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“…RCGs commonly use crowbar drive circuits [23], [24]. On the one hand, a large excitation current can be developed in a short period of time, creating a large peak electromagnetic thrust.…”

Section: B Circuit Equationsmentioning

confidence: 99%

Specified Velocity Launching of Reluctance Coil Gun Based on Genetic Algorithm

Zhang

2024

IEEE Access

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In this study, a method is proposed to obtain the initial voltage of the capacitor and the initial relative position of the projectile of a reluctance coil gun using a genetic algorithm to make the projectile launch at a specified muzzle velocity with high efficiency. Firstly, the equivalent inductance change during the launching process is used as a link for multi-physics field analysis, and a set of electromagnetic dynamics equations is derived to correct the effect of magnetic saturation on the inductance according to the current value in the coil. Further the set of equations is constructed as a Simulink discretized numerical computational program and called by a genetic algorithm written in MATLAB to approximate the optimal solution by generation-by-generation optimization. When the specified projectile muzzle velocity is set to 10 m/s, the initial voltage of the capacitor calculated using the genetic algorithm is 156 V, and the initial position of the projectile is −14.3 mm. We input the parameters into the finite element analysis model and the launch experiment platform, and the obtained projectile muzzle velocity is 9.67 m/s and 9.8 m/s respectively, and the efficiency is close to the optimal value, also the comparison of voltage and current waveforms also shows that the method proposed in this study is effective.INDEX TERMS reluctance coil gun, equivalent inductance, genetic algorithm, specified muzzle velocity, launching efficiency.

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“…RCGs commonly use crowbar drive circuits [23], [24]. On the one hand, a large excitation current can be developed in a short period of time, creating a large peak electromagnetic thrust.…”

Section: B Circuit Equationsmentioning

confidence: 99%

Specified Velocity Launching of Reluctance Coil Gun Based on Genetic Algorithm

Zhang

2024

IEEE Access

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“…Therefore, the current should decrease to near zero before the projectile moves to that position. The commonly used crowbar circuit [14,15] diagram of REMLs is shown in Fig. 2.…”

Section: To Get the Currentmentioning

confidence: 99%

Research on Electromagnetic Dynamics Algorithm of Reluctance Launcher during Acceleration Process

Mengkun,

Junhong,

Xianglie

et al. 2023

IEEJ Transactions Elec Engng

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The structure of the reluctance electromagnetic launcher (REML) is equivalent to an inductor with a movable iron core. The dynamic current in the launching process is easy to be measured by instruments, but the data such as the position, velocity of the projectile and the equivalent inductance are not only difficult to solve by analytical methods, but also difficult to measure by instruments, which seriously hinders the development of the control technology. To solve this problem, referring to the method of introducing the inductance matrix into the motor algorithm model to realize semi-analytic calculation, a special algorithm model is proposed to calculate the launch process data of REML based on the current data. According to the working characteristics of the reluctance coil transmitter, it is pointed out that its inductance matrix should be specifically expressed as a three-dimensional data table rather than a traditional two-dimensional table. The current can be obtained by closed-loop calculation according to the proposed algorithm block diagram when the circuit parameters are known, or measured by instruments when the circuit parameters are unknown, and then the launch process data is obtained indirectly through calculation. In this study, an experimental platform was built, and the algorithm model was established using MATLAB/Simulink. The comparison of the dynamic launch process data of the finite element method (FEM) showed that the method was feasible.

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Advanced Mathematical Calculation Model of Single-Stage RCG

Zhang

et al. 2022

IEEE Trans. Plasma Sci.

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Coupling Analysis and Research of Multistage SICL Based on Crowbar Circuit

Cited by 5 publications

References 20 publications

Specified Velocity Launching of Reluctance Coil Gun Based on Genetic Algorithm

Specified Velocity Launching of Reluctance Coil Gun Based on Genetic Algorithm

Research on Electromagnetic Dynamics Algorithm of Reluctance Launcher during Acceleration Process

Advanced Mathematical Calculation Model of Single-Stage RCG

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