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Low-speed reluctance motor and manufacturing method thereof

A reluctance motor, low-speed technology, applied in the direction of magnetic circuit rotating parts, magnetic circuit static parts, manufacturing stator/rotor bodies, etc., can solve the problem of not being able to solve the requirements of low-speed and high-torque drive, and the high cost of motor manufacturing , maintenance costs and other issues, to achieve the effect of large torque, reduce maintenance costs, and improve utilization

Inactive Publication Date: 2015-09-16
中国船舶重工集团公司第七一二研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Driven by a high-speed motor plus a gearbox, or the power generation method has a mechanical gearbox, the shortcomings of the drive system or power generation system are: reduced operating efficiency, increased vibration and noise, increased maintenance costs, poor reliability, and the existence of Grease leakage and other problems; the direct drive of low-speed motors can make up for the problems of some high-speed motors plus gearboxes. However, due to the limitation of the torque density of the motor, the motor is large in size and heavy in weight. And the shortcomings of high motor manufacturing costs
Neither of these two drive system methods can well solve the low-speed high-torque drive requirements.

Method used

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  • Low-speed reluctance motor and manufacturing method thereof
  • Low-speed reluctance motor and manufacturing method thereof

Examples

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Embodiment 1

[0030] Example 1: It is the basic embodiment of the low-speed reluctance motor of the present invention. Such as figure 1 , 2 Shown, a kind of low-speed reluctance motor, it comprises frame, stator lamination iron core 1, stator field winding 2, field permanent magnet 3, rotating shaft 4 and laminated salient pole rotor 5; The number of pole pairs of described stator field winding 2 The number of pole pairs is not equal to that of the laminated salient pole rotor 5 ; the laminated salient pole rotor 5 runs at a fixed speed, which is less than the rotation speed of the magnetic field generated by the stator excitation winding 2 .

Embodiment 2

[0031] Example 2: It is a further embodiment on the basis of embodiment 1. In the low-speed reluctance motor, the stator field winding 2 is embedded in the slot 1.1 of the stator lamination core 1 . The excitation permanent magnet 3 is fixed in the dovetail groove on the inner surface of the stator lamination core 1 , or fixed on the inner surface of the stator lamination core 1 by glue connection. The laminated salient pole rotor 5 is made of laminated silicon steel sheets and has a plurality of salient poles, and the number of salient poles is even or odd. There is a filler 6 between the salient poles of the laminated salient pole rotor 5; the outer surface of the salient poles of the laminated salient pole rotor 5 is provided with a binding band 7 for increasing the fixed bonding strength between the filler 6 and the laminated salient pole rotor 5 . The filler 6 is a non-conductive and non-magnetic material, preferably a glass fiber composite material or a carbon fiber ...

Embodiment 3

[0032] Example 3: is a preferred embodiment. Such as figure 1 As shown, the low-speed reluctance motor is a radially magnetized high-torque low-speed reluctance motor, and its excitation permanent magnet 3 is a radial magnetic pole structure of radial magnetization, and the S pole excitation permanent magnet of radial magnetization 3.1 (see figure 1 The radial solid triangle with the middle acute angle facing away from the axis) and the radially magnetized N-pole excitation permanent magnet 3.3 (see figure 1 The radial hollow triangle with the middle acute angle pointing to the axis).

[0033] The stator laminated core 1 is composed of laminated silicon steel sheets, and is axially fixed with the buckle and the end pressure plate. The stator excitation winding 2 is wound with enamelled copper wire, and the winding is embedded in the slot 1.1 of the stator laminated core. Then vacuum pressure impregnation is used to insulate and dry the stator field winding. The excitatio...

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Abstract

The invention relates to a low-speed reluctance motor and a manufacturing method thereof. The low-speed reluctance motor comprises a motor base, stator lamination iron cores, stator exciting windings, an exciting permanent magnet, a rotating shaft and lamination salient pole rotors, wherein the number of pole-pairs of the stator exciting windings and the number of pole-pairs of the lamination salient pole rotors are not equal; the lamination salient pole rotors operate at a fixed speed, and the speed is smaller than the rotation speed of a magnetic field generated by the stator exciting windings. The manufacturing method comprises the manufacturing steps: fixing the exciting permanent magnet, embedding the stator exciting windings in grooves of the stator lamination iron cores, and performing insulating treatment and drying. The low-speed reluctance motor has the advantages that the torque density is improved; a gear box is saved, non-contact transmission is realized, the friction loss is reduced, and the efficiency and the system reliability are improved; the maintenance cost is reduced; the problem of oil leakage is solved; the rotor is firm, durable and resistant to high temperature; the size is reduced, and the utilization rate of installation space is improved; and the manufacturing according to the steps cannot cause demagnetization caused by the fact that the exciting permanent magnet is influenced by the baking temperature.

Description

technical field [0001] The invention relates to a low-speed reluctance motor and a manufacturing method thereof, in particular to a large-torque low-speed reluctance motor, which is especially suitable for high torque density, high efficiency and A high-reliability low-speed reluctance motor belongs to the technical field of motors. Background technique [0002] The drive systems used in the field of low speed and high torque in the prior art are generally divided into two types, one is a high-speed motor plus a gearbox, and the other is a direct drive by a low-speed motor. Driven by a high-speed motor plus a gearbox, or due to the existence of a mechanical gearbox in the power generation method, the shortcomings of the drive system or power generation system are: reduced operating efficiency, increased vibration and noise, increased maintenance costs, poor reliability, and the existence of Grease leakage and other problems; the direct drive of low-speed motors can make up ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/16H02K1/17H02K1/24H02K15/03
Inventor 王刚李争光由大伟谌瑾文立辉
Owner 中国船舶重工集团公司第七一二研究所
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