CAD-based design, analysis and experimental verification of an out-runner permanent magnet synchronous generator for small scale wind turbines

This paper presents the CAD-based design procedure, analysis and experimental verification of a 1 kW out-runner permanent magnet synchronous generator (PMSG) with radial magnetic flux for small-scale wind turbine systems. Firstly, the CAD and mechanical model used in the design procedure of the PMSG are presented. The generator is designed via developed CAD-procedure and design interface in which the basic parameters of the generators are calculated respectively. And then the effectiveness of the interface is supported by applying a coupled transient electromagnetic procedure using finite element method and the design and simulation principles presented apply primarily to the prototype model. Furthermore, the test results of the prototype permanent-magnet generator are analyzed and compared with the calculated data and characteristics. The purposed model is particularly well suited for low-speed wind turbine systems with low-starting torque.