Research on energy conversion efficiency of the reconfigurable reconnection electromagnetic launcher

Fan, Guangcheng; Wang, Yu; Hou, Kai; Yu, Miao; Hu, Yanwen; Yan, Zhongming

doi:10.1016/j.energy.2020.119088

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…(2) Since the drive coil and each armature filament can be regarded as a cylindrical coil, this paper calculates the magnetic field distribution of the drive coil and armature by using the single integral method [19][20][21][22]. It can be seen from ( 1)-( 2) that the magnetic induction intensity components of drive coil and each armature filament can be calculated to obtain the magnetic field distribution law of the synchronous induction coil launcher [23][24].…”

Section: Bzz=bz+b1bz+b2bz+…+bibz+…+bnbzmentioning

confidence: 99%

“…Compared with the conventional chemical launch method, the synchronous induction coil launcher has the advantages of adjustable speed, high precision, long range and great power. It is mainly composed of drive coil and armature [1][2][3][4], which refers to that uses pulse current to generate magnetic traveling wave to drive the armature movement [5][6][7]. It is suitable to accelerate the effective load with large mass to high speed which has important application prospects in the fields of air defense and missile defense, ultra-long-range suppression, and micro-satellite launch [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Numerical Analysis and Measurement of High In-Bore Magnetic Field of Synchronous Induction Coil Launcher

Guan

Shi

et al. 2022

IEEE Access

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The high in-bore magnetic field generated by synchronous induction coil launcher (SICL) was analyzed and measured. According to the current filament method, the magnetic induction intensity generated by the drive coils and each armature filament were calculated. The magnetic field distribution law of the synchronous induction coil launcher was obtained through magnetic field superposition principle. Based on the Biot-Savart law, the equation for calculating magnetic induction intensity of synchronous induction coil launcher was deduced, and the numerical calculation model of magnetic field distribution of synchronous induction coil launcher was established. The magnetic field distribution and numerical calculation model when the drive coils discharge with or without armature were carried out, and the numerical calculation results of the magnetic induction intensity when the drive coils discharge were compared with the finite element simulation results. Finally, the accuracy of the numerical calculation model was verified by comparing the one-dimensional hall probe arranged on the single-stage test platform with the simulation results.INDEX TERMS Numerical analysis, synchronous induction coil launcher(SICL), magnetic field, Biot-Savart law.

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Section: Bzz=bz+b1bz+b2bz+…+bibz+…+bnbzmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Analysis and Measurement of High In-Bore Magnetic Field of Synchronous Induction Coil Launcher

Guan

Shi

et al. 2022

IEEE Access

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“…Pulsed-current-driven electromagnetic launchers (EMLs) are mainly categorized into rail-type, coil-type and reconnectiontype, etc. [1], [2]. Reluctance coil launcher is one of the coiltype launchers, mainly characterized by a ferromagnetic projectile material [3], whose launching process is not only transient, but also very difficult to analyze due to the strong nonlinearity [4].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Reluctance Coil Launchers Driven by Distributed Feeder Circuit

Lu,

Yi,

Yuan

et al. 2024

IEEE Access

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Reluctance coil launchers usually use a pulse current formed by capacitive discharge to excite the excitation coil when launching. The pulse current peaks are high, and the projectile usually undergoes deep magnetic saturation, resulting in low launching efficiency. To address this problem, this article proposes using distributed feeder circuit to drive reluctance coil launchers, replacing the traditional single set of large-capacity capacitor discharge scheme with multiple small-capacity capacitors discharged in a time-sequential manner, so as to reduce the peak current and suppress magnetic saturation problems. The study includes two main aspects, one is to study the effect of the driving method on the launch performance and analyze the reasons; the other is to propose the calculation of the time-varying data in the launch process by the time-segmented calculation method. The efficiency of the model described in the paper is only 1.301% when using a single high-capacity capacitor for launching, while the launching efficiency is increased to 3.535% when driven by the distributed feeder circuit, indicating that the method can effectively improve the launching performance.INDEX TERMS Reluctance coil launcher, magnetic saturation, distributed feeder circuit, flat-topped wave current, time-segmented calculation method.

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Influence of charging voltage and capacitance on energy conversion efficiency of electromagnetic launcher

et al. 2022

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Research on energy conversion efficiency of the reconfigurable reconnection electromagnetic launcher

Cited by 8 publications

References 23 publications

Numerical Analysis and Measurement of High In-Bore Magnetic Field of Synchronous Induction Coil Launcher

Numerical Analysis and Measurement of High In-Bore Magnetic Field of Synchronous Induction Coil Launcher

Performance Analysis of Reluctance Coil Launchers Driven by Distributed Feeder Circuit

Influence of charging voltage and capacitance on energy conversion efficiency of electromagnetic launcher

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