Title :
Reduction of cogging torque due to production tolerances of rotor by using partially placed dummy slots in axial direction
Author :
Nakano, M. ; Morita, Yusuke ; Matsunaga, Tsuneo
Author_Institution :
Adv. Technol. R&D Center, Mitsubishi Electr. Corp., Amagasaki, Japan
Abstract :
In this paper, a novel stator core structure is proposed to reduce cogging torque due to production tolerances of PM motor. Theoretical analysis of cogging torque due to production tolerances of rotor is implemented. We propose a stator core structure of placing dummy slots partially in axial direction. The effectiveness of the proposed stator core structure is demonstrated by 2D, 3D FEM analysis and measurement results of 12slot-10pole PM motor.
Keywords :
finite element analysis; permanent magnet motors; rotors; stators; torque; 2D FEM analysis; 3D FEM analysis; PM motor; axial direction; cogging torque reduction; partially placed dummy slots; production tolerances; rotor; stator core structure; Forging; Harmonic analysis; Permanent magnet motors; Rotors; Stator cores; Torque;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2014 IEEE
Conference_Location :
Pittsburgh, PA
DOI :
10.1109/ECCE.2014.6954165
