Motor for directly driving electric drum

Abstract

The invention provides a motor for directly driving an electric drum. The motor for directly driving the electric drum comprises a stator iron core, a rotor iron core, a drum wall, an exciting winding, an armature winding, a shaft and the like. The motor for directly driving the electric drum is of an outer rotor structure. The outer side of the rotor iron core and the drum wall are fixed together. When the stator pole number of the motor for directly driving the electric drum is 6N and the rotor pole number of the motor for directly driving the electric drum is 7N, a pole arc coefficient of a stator of the motor for directly driving the electric drum is 0.333, and a pole arc coefficient of a rotor of the motor for directly driving the electric drum is 0.5. When the stator pole number of the motor for directly driving the electric drum is 6N and the rotor pole number of the motor for directly driving the electric drum is 5N, the pole arc coefficient of the stator of the motor for directly driving the electric drum is 0.4, and the pole arc coefficient of the rotor of the motor for directly driving the electric drum is 0.5. The motor for directly driving the electric drum is provided with a six phase winding, and phase angle difference of the six phase winding is 60 electrical degrees. The six phase winding is divided into two channels which are isolated from each other, and when one phase or one channel of the six phase winding breaks down, the other channel can run in fault tolerant mode, and accordingly reliability of a system is improved, and the motor for directly driving the electric drum can be used to directly drive the drum.

Description

technical field [0001] The invention relates to a motor for a direct-drive electric drum, belonging to the technical field of special motors. Background technique [0002] Electric drums used in metallurgy, mining, coal, building materials, electric power, chemical industry and other industries are the main components for power transmission of belt conveyors and hoisting equipment. If the electric drum fails, it will cause serious economic losses. [0003] Most of the traditional electric drums adopt the inner rotor structure of the motor, and the power is transmitted to the outer body of the drum through the gear reducer. This transmission mode makes it difficult to reduce the size of the whole machine. The high-speed motor and multi-stage gear reducer are noisy, and the drum needs to be installed Lubricating oil, and long-term operation will generate a lot of heat, which will accelerate the wear of mechanical parts. The direct-drive electric drum enables the motor to dire...

AI Technical Summary

Problems solved by technology

[0006] At present, there have been research reports on four-phase and five-phase electrically excited double salient pole motors, and there are also research reports on six-phase permanent magnet motors and six-phase induction motors, but no research reports on six-phase double salient pole motors have been retrieved so far. Because the six-phase doubly salient motor designed by the traditional method has serious phase asymmetry

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