Dep. of Fundamentals of Physics for Engineers
Politehnica University Timişoara
Design of Low-Speed PM Generators using FEM
Abstract: The paper deals with the design, FEM analysis, and testing of two surface-mounting permanent magnet (PM) generators with an inner rotor for wind applications. The purpose of this work has been to build a PM generator with simple structure, good performances and very low cogging torque. With a view to minimize the cogging torques, a very high Least Common Multiplier (LCM) between the number of poles and slots was chosen. The paper presents the main design aspects, the performance characteristics, and some test results of the two PM generator prototypes of a 5KW-120 rpm. Good agreement between simulated and experimental results has been achieved.