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Motor for reducing mechanical losses by decreasing base size

A technology of mechanical loss and machine frame size, which is applied in the direction of electromechanical devices, mechanical energy control, electrical components, etc., and can solve problems such as inability to achieve energy saving and consumption reduction

Pending Publication Date: 2017-08-22
天津林元机械设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rotor surface wind wear loss accounts for more than 70% of the mechanical loss of the motor. Therefore, if the higher-speed permanent magnet motor does not find a way to reduce the rotor surface loss, it will not be able to achieve the purpose of energy saving and consumption reduction.

Method used

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  • Motor for reducing mechanical losses by decreasing base size
  • Motor for reducing mechanical losses by decreasing base size
  • Motor for reducing mechanical losses by decreasing base size

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A kind of novel motor that reduces mechanical loss by reducing frame size, its composition comprises: 110kw / 3000rpm motor, described 110kw / 3000rpm motor has motor shaft, and described motor shaft passes through rotor iron core 1, and described The rotor core is connected to the permanent magnet 27, the rotor core passes through the stator core 2, the stator core is connected to the sleeve 3, the sleeve is connected to the base 4, and the bottom of the base is Open the No. 1 connection hole 5 and the No. 2 connection hole 6, the distance between the No. 1 connection hole and the No. 2 connection hole is 406 mm, the base is connected to the front end cover 7, and the motor shaft Through the front end cover, the distance between the center line of the motor shaft and the bottom of the base is 315 mm.

[0040] The new type of motor that reduces mechanical loss by reducing the size of the frame, the front end cover and the motor shaft are connected through a front bearing se...

Embodiment 2

[0047] In the new motor that reduces mechanical loss by reducing the frame size described in Embodiment 1, the outer diameter of the stator core is D1=327mm, the inner diameter of the stator core is Di1=182mm, and the outer diameter of the rotor core is The diameter D2=179.4mm, the length L=260mm of the rotor core.

[0048] The number of stator slots is designed as 42 slots and 4 poles. The inclined slots are reduced from the original Y2 motor inclined 1.25 slots to 0.5 slots, and the leakage reactance of the inclined slots is reduced. At the same time, the span is 9 short-distance windings, and the harmonic content is greatly reduced.

[0049] The new type of motor that reduces the mechanical loss by reducing the size of the frame, the existing 2-pole 3000rpm, in addition to the rotor roughness, air density and surface friction coefficient that affect the loss of the motor, not only the loss increases with the motor speed to the third power At the same time, it is also propor...

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Abstract

A motor for reducing mechanical losses by decreasing a base size is provided and comprises a motor shaft passing through a rotor core. The rotor core is connected with a permanent magnet and passes through a stator core. The stator core is connected with a sleeve. The sleeve is connected to a base. The base is provided with a first connecting hole and a second connecting hole at the bottom. The distance between the first connecting hole and the second connecting hole is 406 mm. The base is connected to a front end cover. The motor shaft passes through the front end cover. The distance between the center axis of the motor shaft and the bottom of the base is 315 mm. The present invention is applied to an 110kW / 3000 rpm motor.

Description

[0001] Technical field: [0002] The invention relates to a new motor which reduces mechanical loss by reducing frame size. [0003] Background technique: [0004] For a long time, permanent magnet motors have achieved a considerable level of power saving compared with ordinary asynchronous motors through optimized design due to their superior performance. However, in most cases, only 4, 6, and 8-pole motors are modified for power saving, and 2-pole 3000rpm motors are not modified for power saving. The reason is that through testing, the 2-pole 3000rpm motor does not save power or saves little power compared with the asynchronous motor, so there are few energy-saving transformations for the 2-pole asynchronous motor with a synchronous speed of 3000rpm. [0005] In the industrial application environment, the fans and water pumps used in large quantities are all 2-pole pumps, and the driving motors are all low-efficiency asynchronous motors, resulting in waste of electric energy...

Claims

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Application Information

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IPC IPC(8): H02K5/00H02K5/16H02K7/00H02K1/16
CPCH02K1/165H02K5/00H02K5/161H02K7/003H02K2213/03
Inventor 吴数董敬元年维林
Owner 天津林元机械设备有限公司
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