Electric Garbage Trucks 

Interior permanent magnet motors are well known for their high torque density, achieved largely due to the high airgap flux density produced by rare earth magnets. The results produced by the characteristics mentioned above mean that an IPM motor can be up to a third of the size and weight of AC induction or brushed DC motor, while staying cost neutral or cheaper for a given power rating.

In many applications a motor’s location means it is unsprung mass and exposed to harsh vibrations; this can cause insulation failures within the motor. Benevelli IPM motor incorporates encapsulated windings and stator to protect the motor against vibration fatigue: the windings are not exposed to environmental conditions.

On IPM motor the magnets are embedded within the rotor design. This eliminates risk of a magnet separating from the rotor and causing failure; it also allows the rotor to rotate at higher speeds. In addition to the windings, the magnets can be completely encapsulated, thus protecting them from environmental and vibration fatigue.