Abstract

The research development regarding Axial Flux Permanent Magnet Generator (AFPMG) has been more interesting, since its construction is simple, easy (iron coreless), and portable. Permanent magnet NdFeB type has high density, commercially available everywhere, relatively low price, and long usage duration. It is brushless resulting in cheap maintenance; and direct drive resulting in high efficiency and reliability. One of the components influencing AFPMG performance much is the connection between rotating magnet motors (distributing magnet field) and coil as a stator place that produces electricity. Rotor-stator performance optimization is influenced by rotor rotation speed and air gap. This paper discussed air velocity distribution over rotor-stator, absolute pressure distribution and resultant force distribution inside the chamber (three dimensions) using Computational Fluid Dynamic (CFD) numerical simulation. The simulation results were presented in geometry distribution form of 5 mm air gap along with casing and cashing grid, Y+ value distribution as the meshing quality indicator on rotor-stator surface, air velocity distribution on rotor-stator surface, absolute pressure distribution on rotor-stator surface, and resultant force distribution of forces directing X, Y, Z axis on rotor-stator surface.

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