PM Synchronous Motors According to Types
PM synchronous motors by ELIN Motoren stand out due to their high levels of efficiency and reliability. The various types are classified by the following criteria:
In general, PM synchronous machines are operated on the frequency converter. The corresponding requirements concerning the electric strength are considered in the design.
Surface magnets can be attached to the rotor via bonding techniques. Additional bindings generate further stabilization.
Implementing this design, the rotor carries the magnets below the rotor surface according to their recess. Due to the newly accumulated space, the magnets can be adjusted advantageously. As a result, the field weakening area can be used more efficiently.
This winding system is suitable for all types of induction machines. Most-widely implemeted are distributed windings as two-layer windings for polyphase voltage systems.
Counting Coil Design
The advantage of this design lies in the winding head’s compactness. Due to the shorter winding head and the higher line density of a PM synchronous machine, the required space for the drive can be further reduced.
Only the machine’s cooling system ensures the operating point in the required heating phase.
In the following you can find an example of the applied cooling systems:
|Surface Cooling (heat derivation via fins and ribs on casing) – airflow is provided by a fan on second shaft end.
|Air-Water Heat Exchanger
|Recooling via air-air heat exchanger (pipe machine)
|Recooling via air-air heat exchanger (external fitting)
|Open Construction: cooling with ambient air