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Synchronous reluctance motor and rotor for synchronous reluctance motor

一种同步磁阻、电动机的技术，应用在用于单相电流的同步电动机、同步机、电动组件等方向，能够解决功率损耗、弱磁场控制、永磁体机械强度、耐热性问题等问题，达到提高转矩和功率因数的效果

Inactive Publication Date: 2015-11-25
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although PMSM does not cause power loss due to the generation of magnetic gas and has high efficiency, it requires weaker magnetic field control during high-speed operation, and there are still problems with the mechanical strength and heat resistance of permanent magnets.

Method used

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  • Synchronous reluctance motor and rotor for synchronous reluctance motor
  • Synchronous reluctance motor and rotor for synchronous reluctance motor
  • Synchronous reluctance motor and rotor for synchronous reluctance motor

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0033] figure 1 It is a cross-sectional view perpendicular to the rotation axis direction of the synchronous reluctance motor according to the first embodiment. In addition, figure 2 It is a partial cross-sectional view showing a detailed cross section perpendicular to the rotation axis direction of the synchronous reluctance motor according to the first embodiment. figure 2 The middle is 1 / 4 of the cross section. Although only 1 / 4 of the figure is shown for convenience of explanation, it does not mean that the synchronous reluctance motor can be divided into four.

[0034] The synchronous reluctance motor 100 has a stator 10 and a rotor 20 inside a housing (not shown).

[0035] The stator 10 has a stator core 11 and a plurality of stator teeth 12.

[0036] The stator core 11 has a structure in which electromagnetic steel sheets are laminated in the rotation direction, and the electromagnetic steel sheets are thin plates made by adding silicon to iron in order to reduce eddy curren...

no. 2 approach

[0074] Figure 8 It is a cross-sectional view perpendicular to the rotation axis direction of the synchronous reluctance motor according to the second embodiment. This embodiment is a modification of the first embodiment.

[0075] The star shaft 50 has four radial plates 51 each extending outward in the radial direction. The four radial plates 51 are arranged at intervals in the circumferential direction and extend along the rotation axis direction of the rotor 20. Here, although the case where there are four radial plates 51 is shown, it is not limited to four. The multiple pieces may be, for example, 6 pieces or the like.

[0076] The radial plate 51 in the second embodiment is arranged in the area where the q-axis direction magnetic flux barrier 41 is formed in the first embodiment. The material of the star shaft 50 is a non-magnetic body. Therefore, similar to the q-axis direction magnetic flux barrier 41 in the first embodiment, the magnetic resistance is large and the magn...

no. 3 approach

[0083] Picture 9 It is a partial cross-sectional view of a detailed cross section perpendicular to the rotation axis direction of the synchronous reluctance motor according to the third embodiment. This embodiment is a modification of the first embodiment.

[0084] In the first embodiment, the d-axis surrounding magnetic flux barrier 31 and the q-axis direction magnetic flux barrier 41 are air layers, but in the third embodiment, the d-axis surrounding magnetic flux barrier 32 and the q-axis direction magnetic flux barrier 42 are Filled with non-magnetic resin.

[0085] In the present embodiment thus constituted, since the d-axis surrounding magnetic flux barrier 32 and the q-axis direction magnetic flux barrier 42 are made of non-magnetic resin, the magnetic flux barrier can be formed as in the first embodiment.

[0086] Therefore, since the q-axis direction magnetic flux barrier 42 plays the same role as the q-axis magnetic flux barrier 41 in the first embodiment, the salient pol...

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PUM

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Abstract

A synchronous reluctance motor (100) comprises: a shaft (23); a rotor core (21) fixed to the shaft (23), and having a plurality of flux barriers formed therein; a stator core (11) having a plurality of protruding stator teeth formed therein; and a multiphase armature winding (15) wound around the plurality of the stator teeth (12). The flux barriers include: a plurality of first flux barriers (41) formed spaced apart in the circumferential direction, and extending in the radial direction; and a plurality of second flux barriers (31) formed mutually spaced apart in the circumferential direction, and having a curved surface protruding toward the center of the rotary shaft in each circumferentially angular region sandwiched by the first flux barriers (41).

Description

Technical field [0001] The invention relates to a synchronous reluctance motor (reluctance motor) and its rotor. Background technique [0002] In the case of existing synchronous motors, there are known permanent magnet type synchronous motors (PMSM: Permanent Magnet Synchronous Motor) with permanent magnets on the rotor, and synchronous motors with field coils on the rotor (FCSM: Field Coil Synchronous Motor), which have permanent magnets on the rotor. Salient pole reluctance motor (RM: Reluctance Motor), etc. [0003] Although PMSM does not cause power loss due to the generation of magnetism and has high efficiency, it needs weaker magnetic field control during high-speed operation, and there are still problems with the mechanical strength and heat resistance of permanent magnets. [0004] Due to the problems of PMSM and the high price of magnets, motors that do not use permanent magnets, namely RM, have gradually attracted attention. As the RM, a synchronous reluctance motor (Sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K19/10
CPCH02K19/103H02K1/246H02K1/2706H02K1/28H02K19/10
Inventor 福本翔大石浩司松下真琴三须大辅竹内活德桥场丰高桥则雄结城和明长谷部寿郎
Owner KK TOSHIBA
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