Title :
Influences of rotor eccentricity on permanent magnet synchronous motor characteristics
Author :
Takahata, R. ; Wakui, S. ; Miyata, K. ; Noma, K. ; Senoo, M.
Author_Institution :
Hitachi Res. Lab., Hitachi Ltd., Hitachi, Japan
Abstract :
This paper describes the influence of rotor eccentricity on permanent magnet synchronous motor characteristics. Specifically, we studied the influence of rotor eccentricity on permanent magnet synchronous motor characteristics by conducting a magnetic field analysis and several experiments. The rotor eccentricity unbalances the magnetic force and thus increases the mechanical loss. Furthermore, a circulating current generated in two three-phase windings connected in parallel results in an increase in electric power loss in the permanent magnet synchronous motor.
Keywords :
permanent magnet motors; synchronous motors; magnetic field analysis; permanent magnet synchronous motor characteristics; rotor eccentricity; three-phase windings; Coils; Degradation; Magnetic analysis; Magnetic field measurement; Magnetic forces; Permanent magnet motors; Production; Rotors; Stator windings; Synchronous motors; circulating current; motor efficiency; permanent magnet synchronous motor; rotor eccentricity; unbalanced magnetic force;
Conference_Titel :
Electrical Machines and Systems, 2009. ICEMS 2009. International Conference on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-5177-7
Electronic_ISBN :
978-4-88686-067-5
DOI :
10.1109/ICEMS.2009.5382869
