FEM Analysis of a New Electromechanical Converter with Rolling Rotor and Axial Air-Gap

• Main Authors: UNGUREANU, C., GRAUR, A.
• Format: Article
• Language: English
• Published: Stefan cel Mare University of Suceava 2015-11-01
• Series: Advances in Electrical and Computer Engineering
• Subjects: angular velocity; air gap; finite element method; force measurement; friction
• Online Access: http://dx.doi.org/10.4316/AECE.2015.04009

The paper presents the modeling of a new type of electromechanical converter with rolling rotor (ECRR) in order to obtain an optimisation at functional level. The ECRR prototype comprises a stator composed of twelve magnetic poles and a disk-shaped rolling rotor made of ferromagnetic material, without windings. Each magnetic pole is made of an E-shaped magnetic system and a winding placed on its central column. The electromechanical converter with rolling rotor is analyzed through a magnetic field study with Flux2D software in magnetostatic application. The field study examines the influence of the rotor thickness, axial air-gap size and current density on the magnetic attraction force that changes the position of the disk-shaped rolling rotor. Also, it is analyzed the variation of the magnetic attraction force for different inclination angles of the rolling rotor. The main advantage of the ECRR is represented by a low rotational speed without using mechanical gearboxes. The ECRR prototype can be used in photovoltaic panels tracking systems.