Cogging Force Reduction and Profile Smoothening Methods for a Slot-Spaced Permanent Magnet Linear Alternator

A Permanent Magnet Linear Alternator (PMLA) works seamlessly with a Free Piston Stirling Engine (FPSE) to convert short-stroke and high-frequency linear motion electric power. Cogging force is an unavoidable opposition acting on the translator, limiting from driving force, which shortens lifespan of machine, causing oscillatory power output increased maintenance costs. This research focuses methods reduce cogging translator slot-spaced PMLA by making geometrical changes structure machine. The profile made be in line displacement avoid unnecessary vibrations damaging piston FPSE. also influence induced voltage. Bringing balance between reduced voltage minor sinusoidal outcome this work.