Size optimization of steel-cored permanent magnet linear synchronous motor (PMLSM) using auto-tuning niching genetic algorithm (GA) is executed for realizing rapid and smooth driving on the short reciprocating trajectory. Particularly, the dynamic constraints are newly proposed and applied for considering the running conditions of PMLSM. Furthermore, the optimally designed one is manufactured, and experimented for comparing the results with the calculated ones.Index Terms-Auto-tuning niching genetic algorithm (GA), dynamic constraints, steel-cored PMLSM.
Tubular-type linear generator for the free-piston engine is anlayzed using finite element method and its characteristics are explaind. Magnetic characteristics of the linear generator are calculated using the finite element method and various structures are considered to achieve the lowest detent force within the rated voltage. The path of the magnetic flux is constructed by the axially magnetized magnets and the iron pole, and the detent force is minimized by adjusting the width of the magnet pole.
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