A Jabbari - PhD student Manufacturing Engineering Group, Mechanical Engineering Department,Noushirvani University of Technology, Babol, Iran
M. Shakeri - Associate professor Manufacturing Engineering Group, Mechanical Engineering Department,Noushirvani University of Technology, Babol, Iran

A tooth shape optimization method for cogging torque reduction in Permanent Magnet motors is developed by using the Reduced Basis Technique (RBT) coupled by Finite Element Analysis (FEA) and Design of Experiments (DOE) methods. The primary objective of the method is to reduce the enormous number of design variables required to define the tooth shape. RBT is a weighted combination of several basis shapes. The aim of the method is to find the best combination using the weights for each tooth shape as the design variables. The experimental design of Taguchi method is used to build the approximation model and to perform optimization. This method is demonstrated on the tooth shape optimization of a 8-poles/12-slots PM motor.

Permanent motor, cogging torque, tooth shape optimization, reduced basis approach