Method for improving starting performance and steady state performance of the new permanent magnet motor rotor structure

The present invention particularly relates to an improved starting performance and steady state performance of the new permanent magnet motor rotor structure, belongs to the technical field of electrical engineering, comprising a shaft and a rotating shaft sleeve, some of the rotor core, the rotor core has a plurality of side permanent magnets and the distribution of the composition octagonal, the rotor core is provided with a recess formed at the corners of the spacer between the permanent magnet magnetic bridge, with the circumferential direction of the rotor core sheath recess, the recess is provided on the sheath circumferentially segmented solid rotor jacket , compared to the present invention and the prior art has the beneficial effects: eddy current generated in the starting process can be obtained on the solid sheath is larger than the starting torque of the rotor laminations, smaller than the solid structure of the permanent magnet motor starting current ; increase rate of the motor of salient pole, to increase the pull-in capability, and torque density of the motor overload, the rotor jacket to avoid overheating, reduce the temperature rise of the rotor during starting, help protect the permanent magnet.