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Switched Reluctance Motor

A technology of switched reluctance motor and stator core, applied in magnetic circuit, synchronous motor for single-phase current, synchronous machine, etc. Increase the pulsation and other problems, to achieve the effect of shortening the magnetic circuit, reducing the torque pulsation, and keeping the duty cycle consistent.

Active Publication Date: 2020-01-21
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like Image 6 As shown, if the three-phase current is passed to the switched reluctance motor described in Patent Document 1, the single-phase torque repeats more, so the peak value of the torque output by the switched reluctance motor becomes higher, and the torque Increased pulsation

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0055] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that, in the description of this embodiment, a switched reluctance motor used as a drive source of a vehicle such as an automobile will be described as an example.

[0056] figure 1 It is a longitudinal sectional view of the switched reluctance motor in one embodiment of the present invention. figure 2 yes figure 1 A magnified view around the first slot and the second slot of the .

[0057] Such as figure 1 As shown, a switched reluctance motor (hereinafter, simply referred to as an SR motor) 1 includes a rotor 2 , a stator 3 , and a winding 4 .

[0058] The rotor 2 includes a rotating shaft 5 and a rotor core 6 . The rotating shaft 5 is rotatably supported by the stator 3 . The rotor core 6 stands radially outward from the outer peripheral surface of the rotary shaft 5 . The rotor core 6 is fixed by fitting or the like with respect to the rotary shaft 5 s...

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Abstract

The present invention provides a switched reluctance motor capable of reducing torque ripple. A switched reluctance motor includes: a stator having a ring-shaped stator core having a multi-pole tooth portion formed in the circumferential direction and having a circular cross-sectional profile perpendicular to the axis; and a winding wound around the tooth portion. and a rotor having a rotor core in which salient pole portions with multiple poles are formed at equal intervals in the circumferential direction. The number of poles of the salient pole portion is 5 poles×N, and the number of poles of the tooth portion is 6 poles×N, where N is a natural number. In addition, the salient pole portion has an inclined surface in which corner portions at both ends in the circumferential direction are cut off.

Description

technical field [0001] The invention relates to a switched reluctance motor. Background technique [0002] There is known a switched reluctance motor with a simple structure that does not use permanent magnets. In this switched reluctance motor, a plurality of teeth of the stator are arranged at equal intervals in the circumferential direction and extend in the radial direction. Therefore, there is a problem that the facing area of ​​the salient poles and the teeth is reduced, and the magnetic path formed between the stator and the rotor is deformed and lengthened, thereby increasing the loss of the motor. [0003] In order to solve this problem, in the switched reluctance motor described in Patent Document 1, the number of poles of the tooth portion 13 of the stator is 6 poles×N, and the number of poles of the salient pole portion of the rotor is 5 poles×N (“N " are the same natural number respectively), the stator core is alternately equipped with first slots and second ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K19/10H02K1/24
CPCH02K1/246H02K19/10H02K19/103H02K1/146
Inventor 筒井隆裕
Owner HONDA MOTOR CO LTD
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