Title :
Dynamic rotor eccentricity analysis by coupling electromagnetic and structural time stepping FEM
Author :
Ha, K.H. ; Hong, J.P.
Author_Institution :
Dept. of Electr. Eng., Changwon Nat. Univ., Kyungnam, South Korea
fDate :
9/1/2001 12:00:00 AM
Abstract :
The influence of unbalance forces in rotary electric machines on the rotor vibration behavior is investigated in this paper. The dynamic response of a Switched Reluctance motor (SRM) rotor is analyzed by the coupled structural and electromagnetic Finite Element Method (FEM) in the transient state solved in a step-by-step procedure with respect to time. The proposed procedure allows solving the coupled field. The dynamic behavior of rotor caused by the coupled mechanical and magnetic forces is presented, according to the variation of unbalance mass and bearing stiffness
Keywords :
finite element analysis; machine theory; magnetic forces; reluctance motors; rotors; vibrations; bearing stiffness; coupled field; dynamic response; electromagnetic FEM; magnetic force; mechanical force; rotary electric machine; rotor eccentricity; rotor vibration; structural FEM; switched reluctance motor; time stepping finite element method; transient state; unbalance force; unbalance mass; Electric machines; Electromagnetic analysis; Electromagnetic coupling; Electromagnetic forces; Finite element methods; Magnetic analysis; Reluctance machines; Reluctance motors; Rotors; Vibrations;
Journal_Title :
Magnetics, IEEE Transactions on
