Technical Specifications

Permanent magnet synchronous machines (PMSM) are strong contenders for many applications requiring low torque pulsation and high torque density.

These electrical machines are used in many devices, such as household appliances, office products, and industrial drives.

Due to the quest for low-noise operation, it is clear that acoustic behavior of PMSM plays a key role in their overall suitability. Over the last few decades, many researchers have investigated possible solutions for noise mitigation in electrical machines. In general, the existing body of work can be classified into active and passive noise control methods.

Active control methods directly reduce the forces acting on the machine.

Passive control methods, on the other hand, are based on altering the geometry of the machine to avoid potential resonance phenomena.

A survey of the literature suggests that the aforementioned methods require information regarding acting forces on the stator, modal frequencies, and emitted sound power.