The Lorentz force law is proposed as an alternative to the Maxwell stress tensor calculate torque of ironless axial flux permanent magnet (AFPM) motor. This allows calculating only magnetic field produced by magnets. A model this based on one magnet, superposition principle, and geometric transformations proposed. method for single inspired finite elements, reduce calculation time. validated 3-...

recently, transverse flux permanent magnet generators (tfpmgs) have been proposed as a possible generator in direct drive variable speed wind turbines due to their unique merits. generally, the quality of output power in these systems is lower than multi stage fixed speed systems, because of removing the gears, so it’s important to design these kinds of generators with low ripple and lowest har...

Tendencies in development of wind power industry including direct-drive small-scale wind power plants and generators have been analyzed. Synchronous generators with permanent magnet excitation for direct-drive wind power turbines are described. Primary magnetic field distribution and effect of armature reaction have been studied for design of a low-speed multipole permanent-magnet synchronous g...

The spoke type rotor can be used to obtain magnetic flux concentration in permanent magnet machines. This allows the air gap magnetic flux density to exceed the remanent flux density of the permanent magnets but gives problems with leakage fluxes in the magnetic circuit. The end leakage flux of one spoke type permanent magnet rotor design is studied through measurements and finite element simul...

The traditional flux reversal permanent magnet (FRPM) machine has high torque ripple due to the double salient-pole structure, and effective air-gap length is increased by structure of stator tooth surface, which affects size magnetomotive force (MMF). This paper proposes an axial modular flux-reversal (AM-FRPM) with attractive capabilities. Based on magnetic field modulation theory, a method a...

Axial-flux permanent magnet (AFPM) motors have been attracting great interest due to their key advantages of high-torque density and compact structure. Concentrated windings are commonly used for AFPM since they significantly reduce the radial length end windings. This paper proposes a novel double-sided stator single-rotor motor topology where one is offset by π radians. arrangement can cancel...

<p>The development of axial-flux permanent-magnet (AFPM) machines has become a mature technology. The single-stator double-rotor (SSDR) AFPM structure advantages on the compactness and low up to medium power applications so microscale size low-cost are reachable be designed. research main objectives designing manufacturing lateral shifting from north poles first rotor face second (NN) sou...