Electromagnetic Propulsion System with Rapid Current Discharge Circuit for Enhanced Projectile Acceleration

Guy Bar Sovik, Bar Halivni, Michael Evzelman, Mor Mordechai Peretz

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a rapid current discharge circuit for single and multi-stage high current coilgun. The circuit eliminates an undesired braking force, which is developed due to a residual current, when the projectile passes the center point of an energized coil. This is done by rerouting the coil current towards an alternative, quick discharge path, where it is damped to zero. Utilization of the discharge circuit is especially advantageous in multi-stage coilgun systems, as the design of the discharge circuit is done once for the 'worst case scenario' and applied to all the coils. It guarantees a safe operation of all the switches, with minor effect on the system performance. The discharge circuit operation has been validated by an experimental prototype rated for 450V, demonstrating rapid coil current discharge for braking force mitigation.

Original languageEnglish
Title of host publication2022 IEEE 23rd Workshop on Control and Modeling for Power Electronics, COMPEL 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665410816
DOIs
StatePublished - 1 Jan 2022
Event23rd IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2022 - Tel-Aviv, Israel
Duration: 20 Jun 202223 Jun 2022

Publication series

NameProceedings of the IEEE Workshop on Computers in Power Electronics, COMPEL
Volume2022-June
ISSN (Print)1093-5142

Conference

Conference23rd IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2022
Country/TerritoryIsrael
CityTel-Aviv
Period20/06/2223/06/22

Keywords

  • braking force
  • coilgun
  • current discharge circuit
  • muzzle velocity

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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