Design and simulation of disk stepper motor with permanent magnets

Abstract

In this paper the design and the magneto-static simulation of axial-flux permanent- magnet stepper motor with the disc type rotor is presented. Disk motors are particularly suitable for electrical vehicles, robots, valve control, pumps, centrifuges, fans, machine tools and manufacturing. The brushless machine with axial flux and permanent magnets, also called the disc-type machine, is an interesting alternative to its cylindrical radial flux counterpart due to the disk shape, compact construction and high torque density. This paper describes a design of four phase microstepping motor with the disc type rotor. The FEM modeling and the 3D magneto-static simulation of the disk stepper motor with permanent magnets is being subject of the article, too. Disc rotor type permanent magnet stepper motor for high torque to inertia ratio is ideal for robotics and CNC machines.

Modeling of Axial Flux Permanent Magnet Generators

“…The obtained Equations ( 6) and ( 7) are modifications of the well-known classical equation describing the one-dimensional distribution of the magnetic field in the air gap [33,34]. The presence of permanent magnets in the machine magnetic circuit causes some modifications in the form of an additional component B PM (θ, ϕ, r) [29,35] described by the Equation (7).…”

“…Similar simplifications can be assumed for the flux-density component excited by PM (7). Finally, it can write:…”

“…The aim of the work is related to the search for design solutions for electromechanical energy converters with permanent magnets dedicated to small power plants. These include machines excited by PM with a radial magnetic field as well as disk machines with an axial flux permanent magnetic field [1][2][3][4][5][6][7].…”

“…In papers from the recent years, apart from the structural analyses of AFPM generators used for wind farms [1,[3][4][5], there are more and more other possibilities of their use. One can mention here electric cars, traction drives and low-speed vehicles [2,7,8,10].…”

Measurement of BLDC Motor Efficiency for Commutation Angle Optimisation

“…Two main requirements for fan are high efficiency and silent operation, where the second one is linked to the minimum torque ripple. Basic properties of the motor are influenced by mechanical and electrical design [2], [3]. However, the methods to drive motor do the rest.…”