Title :
Reduction of the torque ripple in Brushless Doubly-Fed Machine
Author :
Gorginpour, Hamed ; Jandaghi, Behzad ; Oraee, Ashknaz ; Saket, M.A. ; Ahmadian, Mohammad ; Oraee, H.
Author_Institution :
Dept. of Electr. Eng., Islamic Azad Univ., Borazjan, Iran
Abstract :
In this paper, a new structure for the rotor of the Brushless Doubly-Fed Machine (BDFM) is introduced to reduce the machine´s torque ripple. The ripple has a considerable effect on the machine start up. At the first section of the paper, analytical expressions for the air gap permeance distribution, the air gap MMF distribution, cogging torque and back EMF are presented. Then, the effects of skewing the rotor loops are analyzed. Finally, the relation between non-skewed quantities and their values in skewed coordinate are introduced.
Keywords :
air gaps; brushless machines; torque; BDFM; air gap MMF distribution; air gap permeance distribution; back EMF; brushless doubly-fed machine; cogging torque; machine start up; machine torque ripple reduction; rotor; rotor loop skewing; skewed coordinate value; Conductors; Forging; Rotors; Stator windings; Torque; Windings; Air gap MMF; brushless doubly fed machines; skew effect; stator to rotor mutual inductance; torque ripple;
Conference_Titel :
Energetics (IYCE), Proceedings of the 2011 3rd International Youth Conference on
Conference_Location :
Leiria
Print_ISBN :
978-1-4577-1494-8
