The Thrust Characteristics Investigation of Double-Side Plate Permanent Magnet Linear Synchronous Motor for EML

Electromagnetic launch (EML) system has such advantages as high thrust, good controllability, reusable, etc., and so it will be widely used in the future. As a launching motor, a double-side plate Permanent Magnet Linear Synchronous Motor (PMLSM) can provide high instantaneous thrust. According to the characteristics of the EML, this paper studies the thrust characteristics of double-side plate PMLSM. Analyzes the thrust and thrust ripple characteristics in different conditions including: phase current, length of air-gap, height of secondary permanent magnet and pole arc efficient. The analysis results provide a foundation for the optimum design of electromagnetic launcher.