Optimal shape design of iron core to reduce cogging torque of IPM motor

Dong-Hun Kim, Il-Han Park, Joon-Ho Lee, Chang-Eob Kim
2003 IEEE transactions on magnetics  
This paper presents a practical design method to dramatically reduce cogging torque of an interior permanent-magnet (IPM) motor without deteriorating other performances. Using the continuum sensitivity analysis combined with the finite-element method (FEM), the optimal shape of a rotor is investigated. The Lagrange sliding interface technique and an objective function expressed in terms of stored system energy allow fast convergence and simple implementation of the optimization algorithm.
more » ... mental results show that the proposed method is very effective in suppressing the cogging torque of an IPM motor. Index Terms-Finite-element method (FEM), interior permanent-magnet (IPM) motor, sensitivity analysis, shape optimization.
doi:10.1109/tmag.2003.810214 fatcat:4f4y5zv6uzfyrpsrrtxicjmrau