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The acoustic noise of an external rotor Surface Permanent Magnet Synchronous Machine (SPMSM) is studied using a multi-physical analytical methodology. The magnetic radial forces are calculated from the field solution, which is obtained through numerical conformal mapping, using Maxwell stress tensor. Applied on the rotor at the air gap location, these forces excite the rotor plus housing system and...
Cost reduction of any design process is always of interest for industries. Simulation work packages tackle this problem since they can quickly provide reliable results that permit detection of critical design issues prior to the prototype phase. A trade-off is then often made between model accuracy and computation speed. In the particular case of electric machines, homogenization techniques are used...
High prices of permanent magnets (PM), in Permanent Magnet Synchronous Machines of current electric vehicles, pushes for the development of reluctance machines. Synchronous reluctance machine (SynRM) can be a competitive technology when compared to other machines, e.g. induction machines, since the lack of rotor winding limit the copper losses. In SynRM torque is produced due to anisotropy of the...
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