Comparing of cogging torque reduction methods in permanent magnet machines with fractional slot windings

[摘要] The results of the investigation of the cogging torque in permanent magnet synchronous machines, which is caused by the stator slotting and the rotor eccentricity, are presented in the paper. A new design of the machine has been developed in the course of the investigation, and the value of the cogging torque in this construction is less considerably compared to other constructions. In contrast to the available methods of the cogging torque reduction, the solution suggested not only decreases the level of the cogging torque but also has negligibly small influence on characteristics of the machine with the rotor eccentricity which is typical of the mass production and long-term usage.

[发布机构] Novosibirsk State Technical University, 20, Karla Marksa Av., Novosibirsk; 630073, Russia^1

[效力级别] 电工学

[关键词] Cogging torque;Cogging torque reductions;Fractional slot;Mass production;Permanent magnet synchronous machines;Permanent-magnet machine;Rotor eccentricity;Stator slotting