Fractional Slot Concentrated Winding. These are characterized by fractional slot per pole and per phase lower than unity resulting in dense harmonic contents of the armature mmf with a number of pole pairs lower than the field one. This statement is much more critical in fractional slot concentrated winding permanent magnet synchronous machines also named fractional slot permanent magnet machines fspmms.
Figure 5 From Performance Comparison Of Fractional Slot Concentrated Winding Spoke Type Synchronous Motors With Different Slot Pole Combinations Semantic Scholar from www.semanticscholar.org
But continued technological advancement in power electronics along with the need for more efficient and power dense machines is increasing use of fscw in a variety of machine types and sizes. Fractional slot concentrated windings fscw have been used for decades primarily in small machines. A winding is called concentrated when the number of slots per pole per phase is fractional and strictly lower than one.
Fractional slot concentrated windings.
Fractional slot concentrated windings. This means that all coil sides of a certain phase are concentrated in a single slot under one pole thus requiring deep slots. This statement is much more critical in fractional slot concentrated winding permanent magnet synchronous machines also named fractional slot permanent magnet machines fspmms. These are characterized by fractional slot per pole and per phase lower than unity resulting in dense harmonic contents of the armature mmf with a number of pole pairs lower than the field one.
