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This paper presents an analytical solution for prediction of the no-load magnetic field in slotted semi-closed permanent magnet axial flux synchronous machines. The technique is based on 2-D solution of the Maxwell's equations using the separation of variables method, this technique is validated for two different machines. The magnetic field expressions are developed in slots regions, magnetic airgap...
The paper investigated the design of a new-type direct-drive axial flux permanent magnet (AFPM) synchronous in-wheel machine specially designed for electric vehicle applications. The machine configuration is simple and easy to manufacture. The machine has good performances such as phase EMF waveform close to sinusoidal waveform and low cogging torque. The electromagnetic design of 6.8 kW AFPM machine...
Torque ripple is the parasitic element that causes mechanical vibration, acoustic noise and even latent operational failure in permanent magnet (PM) machines. Consequently, considerable design efforts should be made to minimize torque ripple of the machines for high performance applications. In this paper, one cost effective torque ripple reduction technique is proposed and investigated for an axial...
In this study, an axial flux permanent magnet synchronous machine has been optimized for design using the Taguchi method. Five factors have been selected for optimizing, each of which has four levels. A total of sixteen experiments have been conducted according to Taguchi's L-16 orthogonal arrays. The variable to be optimized has been selected to be the air gap flux. Results from the 16 experiments...
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