Design, analysis and optimization of permanent magnet synchronous generator

Permanent magnet synchronous generator (PMSG) is eventually making a serious impact on to the direct drive wind power application. The power density of these generators is critically important to ensure the robustness and cost effectiveness of the supporting turbine structure. In this paper, an optimal design procedure is adopted for the investigation of a radial flux surface mounted PMSG. In order to optimize the weight and losses of the machine, the authors applied ∈-constrained differential evolution with gradient based mutation optimization technique. The design constraints in terms of electromagnetic force, torque, stator tooth flux density & rotor tooth flux density define the boundary of this optimization technique. Finally, the Maxwell-Ansys finite element method is used to validate the designed PMSG.