Procedure for fast electromagnetic design of axial flux permanent magnet machines

A fast and accurate algorithm to design an axial flux machine is presented in this paper. Analytical approach, avoiding numerical solutions, is used to calculate the main dimensions of the stator lamination for a given magnetic and electrical load. The method is used to assure maximal electromagnetic torque for a given value of tangential stress and outer diameter. As a result of this process an improved torque estimation procedure based on the non-ideal parameters of the machine such as magnetizing inductance, leakage inductance, armature reaction effect and leakage flux, is developed. Finite element analysis is used to validate these results, establishing a good agreement with the analytical approach.