Investigation of Reducing End Detent Force by Modification Design of End Teeth for Linear Induction Motor with Ansys

An investigation has been made to reduce detent force because of end effect by modifying end teeth design. The concave shape is selected to get the smallest value of detent force since previous design with convex shape can only reduce few percent of all. Four types of concave models are analysed using FEM and ANSYS to determine the value of total magnetic flux density as it is one of important parameter for calculating value of detent force. Simulations show that the value of total magnetic flux density depends on a steep slope on each model and the steepest of slop in a model has the high value of total magnetic flux density which will significantly influence the value of detent force add more with the location of the maximum value area is also different but not the same location for each model.