Motor for directly driving electric drum

An electric drum and drum technology, which is applied to electrical components, electromechanical devices, magnetic circuit rotating parts, etc., can solve the asymmetry of each phase of the six-phase doubly salient motor, and no research reports on the six-phase doubly salient motor have been retrieved. problems, to achieve the effect of reducing copper consumption, improving reliability and reliable operation

Active Publication Date: 2015-05-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Motor for directly driving electric drum
  • Motor for directly driving electric drum
  • Motor for directly driving electric drum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 The shown motor for a direct drive electric drum includes a stator core, a rotor core, a drum wall, an excitation winding, an armature winding and a shaft, etc., the motor is of an outer rotor structure, and the outer side of the rotor core is fixed to the drum wall; The number of poles of the motor stator is 6N, the pole arc coefficient of the stator is 0.333, the pole number of the rotor is 7N, and the pole arc coefficient of the rotor is 0.5.

Embodiment 2

[0036] Such as figure 2 The difference between the motor for fixed direct drive electric drum shown in this embodiment and that of Embodiment 1 is that the number of poles of the stator and rotor is 6N / 5N, the pole arc coefficient of the stator is 0.4, and the pole arc coefficient of the rotor is 0.5.

[0037] Such as image 3 The winding method of each winding of the high-reliability motor for the direct-drive electric drum is shown. There is an armature coil and an excitation coil on each stator pole, and the armature coil is divided into A-phase coil and B-phase coil in turn along the circumferential direction. Coil, C-phase coil, D-phase coil, E-phase coil and G-phase coil, so cycle N times, and the winding directions of adjacent armature coils are opposite; each excitation coil on the stator pole has the same number of turns, and The winding directions of adjacent excitation coils are opposite.

[0038] Such as Figure 4 The connection method between the motor winding...

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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...

Claims

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Application Information

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IPC IPC(8): H02K1/14H02K1/24H02K3/28
CPCH02K3/18H02K3/28H02K29/00
Inventor 史立伟周波魏佳丹赵星甘志伟胡豆豆
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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