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Switched reluctance motor

A technology of switched reluctance motor and soft magnetic composite material, applied in the manufacture of motor generators, magnetic circuits, synchronous machines, etc., can solve the problem of limited miniaturization of reluctance stator and rotor, limited degrees of freedom, and difficulty in forming free structural issues

Inactive Publication Date: 2014-12-03
SAMSUNG ELECTRO MECHANICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in a switched reluctance motor using mutual inductance, if the stator and rotor are formed of steel sheets, eddy currents will be generated, resulting in magnetic loss
Also, when using steel sheets to mold the stator and rotor, the degree of freedom is limited, so it is difficult to form a free structure
Therefore, the increase in reluctance and the miniaturization of the stator and rotor are limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0065] Such as figure 1 and figure 2 As shown, the rotor 100 is formed in a circular shape with a shaft disposed at the center thereof, and a plurality of salient poles 101 are formed along the outer circumference. In addition, the stator 110 includes a salient pole opposite to the salient pole 101 of the rotor 100 and has a coil 120 wound around the salient pole, and the rotor 100 is rotatably provided in the stator 110 while forming a gap between the rotor 100 and the stator 110 130.

[0066] The rotor 100 and the stator 110 described above are examples using a soft magnetic composite (SMC), and are formed in a compression manner, that is, inserting the soft magnetic composite (SMC) into a mold, and then compressing the soft magnetic composite ( SMC) for compression. Consequently, substantially no material loss occurs compared to press-forming of prior art steel sheets.

[0067] Here, the rotor 100 and the stator 110 are formed by adding a low-viscosity liquid lubricant...

Embodiment approach 2

[0074] Such as image 3 and Figure 4 As shown, the rotor 200 is formed in a circular shape with a shaft disposed at the center thereof, and a plurality of salient poles 201 are formed along the outer circumference. In addition, the stator 210 includes a salient pole opposite to the salient pole 201 of the rotor 200, and has a coil 220 wound around the salient pole 201, and the rotor 200 is rotatably provided in the stator 210 while forming a coil between the rotor 200 and the stator 210. Clearance 230.

[0075] The above-mentioned rotor 200 and stator 210 are taken as an example and formed in a compression manner, that is, inserting a soft magnetic composite (SMC) added with a low-viscosity liquid lubricant into a mold, and then compressing the soft magnetic composite (SMC) at 450° C. under high pressure SMC) for compression.

[0076] Here, the rotor 200 and the stator 210 respectively include a protruding portion 232 and a groove 231 respectively formed on central portion...

Embodiment approach 3

[0081] Such as Figure 5 As shown, the rotor 300 and the stator 310 made of soft magnetic composite (SMC) respectively include a protruding portion 332 and a groove 331 formed in central portions of opposite surfaces 300a and 310a facing each other, respectively. , and an oblique line is formed to intersect the axial direction, whereby the gap 330 which is an intermediate region of the rotor 300 and the stator 310 is curved in a straight line.

[0082] Accordingly, the opposing surfaces 300a and 310a of the rotor 300 and the stator 310, which are torque generating regions, may be increased. The increase of the opposing surfaces 300a and 310a results in an increase of reluctance, thereby improving the efficiency of a switched reluctance motor (SRM), and is advantageous for miniaturization.

[0083] Table 8 below compares torques in a case where the center portion of the gap 330 is bent in a straight line to form a diagonal line and in a case where the center portion of the gap...

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Abstract

Disclosed herein is a switched reluctance motor comprising: a rotor having a shaft disposed at a central portion thereof and having salient poles formed at an outer circumference thereof; a stator having the rotor rotatably installed therein while forming a gap and having salient poles facing the salient poles of the rotor; and an extraction pressure decreasing unit separating the rotor and the stator from a mold, wherein the rotor and the stator are made of a soft magnet composite (SMC).

Description

[0001] Cross References to Related Applications [0002] This application claims priority to Korean Patent Application No. 10-2013-0059686, filed May 27, 2013, entitled "Switched Reluctance Motor," the entire contents of which are incorporated by reference incorporated into this application. technical field [0003] This invention relates to switched reluctance machines. Background technique [0004] In switched reluctance motor (SRM), the cores of both the rotor and the stator are formed in the magnet structure, the magnet structure is salient pole, and the concentrated coils are only wound around the stator without any excitation means (windings or permanent magnets) formed in the rotor ). [0005] Switched reluctance motors (SRMs), which vary in reluctance to turn a rotor with reluctance torque, are inexpensive to manufacture, require little maintenance, and have an almost permanent lifespan due to high reliability. [0006] Meanwhile, a switched reluctance motor gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K19/02
CPCH02K1/24H02K1/14H02K1/02H02K1/06H02K15/022H02K19/103H02K2201/03H02K37/02
Inventor 尹熙洙裵汉京郑盛太林成骏李尚钟申畯植
Owner SAMSUNG ELECTRO MECHANICS CO LTD