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Rotating motor

A technology for rotating electrical machines and rotating directions, which is applied in the direction of electromechanical devices, electrical components, electric components, etc., and can solve problems such as the decline in efficiency of rotating machines and the increase in high-frequency components of rotor magnetomotive force, so as to reduce high-frequency iron loss and improve efficiency , the effect of suppressing high-frequency components

Active Publication Date: 2021-06-18
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art described in Patent Document 1, since the amount of the rotor magnetomotive force differs between the interpoles where the permanent magnets are inserted and the interpoles where the permanent magnets are not inserted, the high frequency components of the rotor magnetomotive force Increase, the efficiency of the rotating machine decreases due to the increase of high-frequency iron loss

Method used

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Examples

Experimental program
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Effect test

Embodiment approach 1

[0049] figure 1 is a cross-sectional view schematically showing the rotating electric machine according to Embodiment 1, figure 2 is a schematic external view showing the rotor of the rotating electric machine according to Embodiment 1, image 3 is a perspective view showing a schematic appearance of a pole core body to which the rotor of the rotating electric machine according to Embodiment 1 is applied, Figure 4 It is a perspective view which shows the 1st pole which comprises the schematic appearance of a pole core body. exist Figure 1 to Figure 4 Among them, a rotating electric machine 1 as an AC generator motor for vehicles is divided into a rotating machine part 2 and an electric equipment part 3. The electric equipment part 3 is configured to supply electric power to a rotor winding 18 via a brush 8 and a slip ring 9, and is equipped with There are a power circuit unit and the like for supplying electric power to the stator winding 12 .

[0050] The shaft 6 of th...

Embodiment approach 2

[0064] Figure 17 It is a cross-sectional view showing the vicinity of the first pole 16 and the second pole 17 of the rotor and the first claw-shaped magnetic pole portion 16 a and the second claw-shaped magnetic pole portion 17 a of the permanent magnet 23 in the second embodiment. The width WMa in the rotational direction of the first chamfered portion 26a and the second chamfered portion 27a adjacent to the inter-magnetic pole portion 22a where the permanent magnet 23 is inserted is made larger than the first chamfered portion adjacent to the magnetic pole interpole portion 22b where the permanent magnet 23 is not inserted. 26b and the second chamfered portion 27b have a large rotational width WMb.

[0065] According to the second embodiment, since the first chamfered portion 26a and the second chamfered portion 27a adjacent to the inter-magnetic pole portion 22a where the permanent magnet 23 is inserted are configured so as to be adjacent to the first inter-magnetic pole ...

Embodiment approach 3

[0067] Figure 18 It is a cross-sectional view showing the vicinity of the first pole 16 and the second pole 17 of the rotor and the first claw-shaped magnetic pole portion 16a and the second claw-shaped magnetic pole portion 17a of the permanent magnet 23 according to the third embodiment. The rotational width WMa of the first chamfered portion 26 a and the second chamfered portion 27 a adjacent to the magnetic pole interpole portion 22 a inserted in the permanent magnet 23 is made wider than half Wrh of the radial width of the magnetic flux output surface of the permanent magnet 23 .

[0068] The magnetic flux generated by the permanent magnet 23 is divided into a magnetic circuit and an output magnetic flux 29, wherein the magnetic circuit forms a leakage magnetic flux passing through the second magnetic flux regulating part 25a via the first magnetic flux regulating part 24a and closing in the rotor 28 , the output magnetic flux 29 passes from the first claw-shaped magneti...

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PUM

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Abstract

Disclosed is a rotating motor. By suppressing a high-frequency component of rotor magnetomotive force and reducing high-frequency iron loss, efficiency of the rotating motor can be improved. A permanent magnet (23) is provided in a part of an inter-pole part between a first claw-shaped magnetic pole part (16a) and a second claw-shaped magnetic pole part (17a), The shape of a first chamfered part (26a) and the second chamfered part (27a) provided at the inter-pole part where the permanent magnet (23) is inserted is the same as the shape of the inter-pole part where the permanent magnet (23) is not inserted The shape of the first chamfered part (26b) and the second chamfered part (27b) are different.

Description

technical field [0001] The present application relates to a rotating electrical machine having a rotor composed of claw-shaped magnetic pole portions. Background technique [0002] In a rotating electric machine, the rotor arranged on the inner peripheral side of the stator pole with a certain gap therebetween is composed of a pair of oppositely arranged claw-shaped magnetic poles, a field winding (rotor winding) and a permanent magnet, wherein the pair of oppositely arranged Claw poles are integrally attached to the shaft, and a claw portion having a plurality of N poles and S poles is formed at the front end portion, the field winding (rotor winding) generates magnetizing force in the claw poles, and the permanent magnet They are alternately arranged between the claws of the oppositely arranged claw-shaped magnetic poles. The distance L1 between claws of opposing claw poles on which permanent magnets are arranged is narrower than the distance L2 between claws of opposing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/24H02K1/27
CPCH02K1/243H02K1/2753H02K2201/06H02K21/044H02K2213/03H02K11/05H02K1/2766H02K21/04
Inventor 日高勇気吉泽敏行前田直秀村上直司东野浩之
Owner MITSUBISHI ELECTRIC CORP
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