Characterization of a system suspended by permanent magnets

Abstract

In this article we present the basic principles of design, construction and characterization of a mini-wind turbine suspended by magnetic levitation. The repulsive force is generated by permanent magnet poles of the same type (north or south), aligned by a shaft of aluminum. We compare the magnetic force with gravitational force involved in determining the magnetic moment m of the magnets, knowing the magnitude of m we find the magnetic field (B) theoretical, finally compare our measurements with magnetic fields depending on the distance measured by a gaussmeter. The determination of the magnitude of the magnetic fields allow us to know the physical limits of our levitated system, as well as optimization of materials used in its construction. An experimental system will be described, in which we have a pair of permanent magnets forming a magnetic dipole of 0.034 Kg of weight levitating above another magnetic dipole of equal weight and magnitude, separated by a distance of 4.248 cm.