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For the motorized spindle applications, the interior permanent magnet (IPM) machines is preferred to be chosen than surface mounted permanent magnet (SPM) machines, since it has better magnet protection ability, easier magnet installation, and less magnet loss. However, IPM machines usually has higher stator core loss, higher torque ripple, etc. Especially, when the machine is working under over loading...
In this paper, based on the special requirements and rigor conditions of the power air cooling island motor for fan, a 115kW 67.9RPM 380V low-speed high-torque direct-driven PMSM with fractional-slot winding for fan used on power air cooling island was designed to state design feature and difficulties. For the air cooling island vertical motor for fan, due to space and weight restricted, cooling difficulties,...
This paper studies the characteristics and design concept of low-speed high-torque direct-driven PMSM with fractional-slot concentrated winding used in coal mine belt conveyor system. The fractional slot concentrated winding PMSM with high efficiency, high power density and simple windings type is used widely, and more attention is paid to the influence of cogging torque with different slots and poles,...
This paper studies the electromagnetic noise and vibration of three-phase induction motor with squirrel cage rotor affected by different skewed slots tooth distance. For low electromagnetic noise motor, a traditional method which recommending skewed slot tooth distance of the rotor is equal to one pitch of the stator is not optimal. A new method is proposed in which the coefficient factor is coupled...
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