Optimum Design of A Miniaturized Electromagnetic Generator for Electrical Energy Supply of A Small Size Projectile’s Fuse

Document Type : Original Article

Authors

Malek-Ashtar University of Technology

Abstract

This research describes the optimum design of a Miniaturized Electromagnetic Generator (MLG) which supplies electrical energy for the projectile fuse. It supplies the energy by converting the mechanical energy of the projectile into electrical energy. The MLG presented, consists of three parts; a ring magnet, a metal bobbin, and a shear plate and produces the energy by applying the Faraday induction law. To maximize the energy and determine the effect of each parameter on the energy, optimization was performed using RSM, while numerical simulations were performed by Maxwell 3D. Having obtained the MLG parts’ optimum dimensions, an experimental test was used to verify the numerical results. Due to the mechanical energy of the projectile resulting from the initial acceleration, the shock test was selected as the experimental test. The results obtained in the 800'g acceleration range with a capacitor of 100uF show the charge rates of 14V in 1.9ms and 14.8V in 1.5ms for the experimental test and the numerical method respectively, displaying good conformity between them. Also, a safety mechanism was designed to activate MLG at accelerations higher than 800'g and its analysis was carried out by Abaqus. In addition to reducing the volume, the results of theoptimization led not only to increased energy production by MLG, but also, to the determination of each part’s effect on the MLG's performance.

Keywords

References

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Applied Electromagnetics
Volume 7, Issue 1 - Serial Number 18
February 2019
Pages 17-28

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History

  • Receive Date: 26 April 2019
  • Revise Date: 24 July 2019
  • Accept Date: 16 September 2019
  • Publish Date: 22 May 2019

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