Title : 
Theoretical investigation of fractional conductor windings for AC-machines - definition, air-gap m.m.f. and winding factors
         
        
            Author : 
Grop, Henrik ; Soulard, Juliette ; Persson, Holger
         
        
            Author_Institution : 
Sch. of Electr. Eng., R. Inst. of Technol., Stockholm
         
        
        
        
        
        
            Abstract : 
This paper introduces the concept of fractional conductor windings for AC-machines. They allow to obtain fractional equivalent number of conductors per slot. Different arrangements of windings are presented. The harmonic spectrum of the armature magneto-motive force in the air-gap is then analyzed in order to derive rules for choosing suitable combinations using winding factors.
         
        
            Keywords : 
AC machines; air gaps; conductors (electric); machine insulation; machine windings; AC-machines; air-gap; armature magneto-motive force; fractional conductor windings; harmonic spectrum; winding factors; Air gaps; Automation; Coils; Conductors; Harmonic analysis; Machine windings; Magnetic analysis; Paper technology; Power electronics; Stator windings;
         
        
        
        
            Conference_Titel : 
Electrical Machines, 2008. ICEM 2008. 18th International Conference on
         
        
            Conference_Location : 
Vilamoura
         
        
            Print_ISBN : 
978-1-4244-1735-3
         
        
            Electronic_ISBN : 
978-1-4244-1736-0
         
        
        
            DOI : 
10.1109/ICELMACH.2008.4799916