JPH0638412A - Permanent magnet type brushless rotating electric machine - Google Patents
Permanent magnet type brushless rotating electric machineInfo
- Publication number
- JPH0638412A JPH0638412A JP21333892A JP21333892A JPH0638412A JP H0638412 A JPH0638412 A JP H0638412A JP 21333892 A JP21333892 A JP 21333892A JP 21333892 A JP21333892 A JP 21333892A JP H0638412 A JPH0638412 A JP H0638412A
- Authority
- JP
- Japan
- Prior art keywords
- slot
- tooth
- core
- permanent magnet
- pseudo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Brushless Motors (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
(57)【要約】
【構成】 外周に突出する複数個の歯部２１と、歯部２
１の間で外周方向に開口するスロット部２２と、隣接す
る歯部２１の内周側との間を連結する連結部２３とから
なる歯部鉄心３と、スロット部２２に収納した固定子コ
イル４と、歯部鉄心２の外周に嵌合したリング状のヨー
ク部鉄心３と、各歯部２１の内周側先端に設けた疑似ス
ロット２４とを備えたものである。
【効果】 連結部に発生するコギングトルクと疑似スロ
ットによるコギングトルクが均一となるので、１スロッ
トスキューを施した場合と同等のトルクリップルが小さ
い特性の良いブラシレスモータを提供出来る。
(57) [Summary] [Structure] A plurality of teeth 21 projecting to the outer periphery and teeth 2.
1, a tooth portion core 3 including a slot portion 22 that is open in the outer peripheral direction between the tooth portions 1 and a connecting portion 23 that connects the inner peripheral side of the adjacent tooth portions 21, and a stator coil housed in the slot portion 22. 4, a ring-shaped yoke portion iron core 3 fitted to the outer circumference of the tooth portion iron core 2, and a pseudo slot 24 provided at the tip of the inner circumferential side of each tooth portion 21. [Effect] Since the cogging torque generated in the connecting portion and the cogging torque due to the pseudo slot are made uniform, it is possible to provide a brushless motor having good characteristics with small torque ripple, which is equivalent to the case where a 1-slot skew is applied.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、永久磁石形回転子を備
えたブラシレス同期モータ等の永久磁石形ブラシレス回
転電機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permanent magnet type brushless rotating electric machine such as a brushless synchronous motor having a permanent magnet type rotor.
【０００２】[0002]
【従来の技術】従来、永久磁石形ブラシレスモータのコ
ギングトルクを低減するために、回転子の磁極に対向す
る固定子の歯部先端に疑似スロットを設け、隣接する歯
部との間に形成されたスロットのオープニング部と共に
疑似スロットにも１／２スロットのスキューを施したも
のが開示されている（例えば、特開昭６１−４４４８号
公報）。2. Description of the Related Art Conventionally, in order to reduce the cogging torque of a permanent magnet type brushless motor, a pseudo slot is provided at the tip of a tooth portion of a stator, which is opposed to a magnetic pole of a rotor, and is formed between adjacent tooth portions. In addition to the opening portion of the slot, a pseudo slot having a skew of 1/2 slot is disclosed (for example, Japanese Patent Laid-Open No. 61-4448).
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記構成で
は、疑似スロットの幅は歯部先端の幅の大きさから制限
を受けるため、疑似スロットの大きさをスロットのオー
プニング部の大きさと同じにすること出来ず、コギング
リップルが不均一となって疑似スロットの効果が十分発
揮出来ないという欠点があった。本発明は、固定子のス
ロットに関係なく、疑似スロットによるコギングトルク
低減効果を高く維持することを目的とするものである。However, in the above configuration, since the width of the pseudo slot is limited by the width of the tip of the tooth portion, the size of the pseudo slot is made the same as the size of the opening portion of the slot. However, the cogging ripple becomes non-uniform and the effect of the pseudo slot cannot be fully exerted. An object of the present invention is to maintain a high cogging torque reducing effect by the pseudo slot regardless of the slots of the stator.
【０００４】[0004]
【課題を解決するための手段】本発明は、固定子鉄心の
歯部の先端に疑似スロットを設けた永久磁石形ブラシレ
ス回転電機において、外周に突出する複数個の歯部と、
前記歯部の間で外周方向に開口するスロット部と、隣接
する前記歯部の内周側との間を連結する連結部とからな
る歯部鉄心と、前記スロット部に収納した固定子コイル
と、前記歯部鉄心の外周に嵌合したリング状のヨーク部
鉄心と、前記各歯部の内周側先端に設けた疑似スロット
とを備えたものである。SUMMARY OF THE INVENTION The present invention relates to a permanent magnet type brushless rotating electric machine in which a pseudo slot is provided at the tip of a tooth portion of a stator core, and a plurality of tooth portions projecting to the outer periphery,
A tooth core formed of a slot opening between the teeth in the outer peripheral direction, and a connecting portion connecting the inner circumferences of the adjacent teeth, and a stator coil housed in the slot. A ring-shaped yoke portion iron core fitted to the outer periphery of the tooth portion iron core, and a pseudo slot provided at the inner circumferential side tip of each tooth portion.
【０００５】[0005]
【作用】歯部の先端には、ギャップ面における歯部先端
のパーミアンスが、連結部のパーミアンスと同じレベル
となるようにした疑似スロットを設けてあるので、連結
部に発生するコギングトルクと疑似スロットによって発
生するコギングトルクのレベルが同一となり、かつリッ
プル周波数が２倍となるので、均一なコギングリップル
が得られ、疑似スロットの効果が十分発揮出来る。[Function] A pseudo slot is provided at the tip of the tooth portion so that the permeance at the tip of the tooth at the gap surface becomes the same level as the permeance of the connecting portion. Since the level of the cogging torque generated by is the same and the ripple frequency is doubled, a uniform cogging ripple can be obtained and the effect of the pseudo slot can be sufficiently exerted.
【０００６】[0006]
【実施例】本発明を図に示す実施例について説明する。
図１は本発明の実施例を示す正面図で、スロット数が９
個の場合の固定子１を示している。固定子１を構成する
固定子鉄心１１は歯部鉄心２とヨーク部鉄心３とからな
っている。歯部鉄心２は外周に突出する歯部２１と、歯
部２１の間に開口するスロット部２２と、隣接する歯部
２１との間を歯部２１の内周側で連結する連結部２３と
からなり、スロット部２２に固定子コイル４を収納して
歯部２１に巻回し、その後に、歯部鉄心２の外周にリン
グ状のヨーク部鉄心３を嵌合して固定子１を形成してあ
る。歯部鉄心２の内周側には空隙を介して回転子５を設
けてある。歯部鉄心２の連結部２３はギャップ面におけ
るパーミアンスが小さくなるように、径方向の断面積を
小さくしてあり、歯部２１の回転子５に対向する内周側
先端には、ギャップ面におけるパーミアンスが連結部２
３のパーミアンスと同じレベルとなるようにスロット幅
およびスロット深さを決めた疑似スロット２４を設けて
ある。したがって、連結部に発生するコギングトルクと
疑似スロットによって発生するコギングトルクのレベル
が同一となり、かつリップル周波数が２倍となるので、
均一なコギングリップルが得られ、疑似スロットの効果
が十分発揮出来る。なお、リング状のヨーク部は必要に
応じて複数個に分割したものでもよい。Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing an embodiment of the present invention, in which the number of slots is 9
The stator 1 in the case of one piece is shown. A stator core 11 that constitutes the stator 1 is composed of a tooth core 2 and a yoke core 3. The tooth core 2 has a tooth portion 21 protruding to the outer periphery, a slot portion 22 opened between the tooth portions 21, and a connecting portion 23 that connects the adjacent tooth portions 21 on the inner peripheral side of the tooth portion 21. The stator coil 4 is housed in the slot 22 and wound around the tooth 21, and then the ring-shaped yoke core 3 is fitted around the tooth core 2 to form the stator 1. There is. A rotor 5 is provided on the inner peripheral side of the tooth core 2 with a gap. The connecting portion 23 of the tooth core 2 has a small radial cross-sectional area so that the permeance on the gap surface is small, and the inner peripheral end of the tooth 21 facing the rotor 5 has a gap surface on the gap surface. Permeance is the connecting part 2
A pseudo slot 24 having a slot width and a slot depth determined so as to have the same level as the permeance of 3 is provided. Therefore, the levels of the cogging torque generated in the connecting portion and the cogging torque generated by the pseudo slot are the same, and the ripple frequency is doubled.
Uniform cogging ripple can be obtained, and the effect of the pseudo slot can be fully exerted. The ring-shaped yoke portion may be divided into a plurality of pieces as necessary.
【０００７】[0007]
【発明の効果】以上述べたように、本発明によれば、連
結部に発生するコギングトルクと疑似スロットによるコ
ギングトルクが均一となるので、１スロットスキューを
施した場合と同等のトルクリップルが小さい特性の良い
ブラシレスモータを提供出来る効果がある。As described above, according to the present invention, the cogging torque generated in the connecting portion and the cogging torque due to the pseudo slot become uniform, so that the torque ripple equivalent to that in the case of applying the one-slot skew is small. It is effective in providing a brushless motor with good characteristics.
【図１】本発明の実施例を示す正面図である。FIG. 1 is a front view showing an embodiment of the present invention.
１ 固定子 １１ 固定子鉄心 ２ 歯部鉄心 ２１ 歯部 ２２ スロット部 ２３ 連結部 ２４ 疑似スロット ３ ヨーク部鉄心 ４ 固定子コイル ５ 回転子 1 Stator 11 Stator Iron Core 2 Tooth Part Iron Core 21 Tooth Part 22 Slot Part 23 Connection Part 24 Pseudo Slot 3 Yoke Part Iron Core 4 Stator Coil 5 Rotor
Claims (1)
を設けた永久磁石形ブラシレス回転電機において、外周
に突出する複数個の歯部と、前記歯部の間で外周方向に
開口するスロット部と、隣接する前記歯部の内周側との
間を連結する連結部とからなる歯部鉄心と、前記スロッ
ト部に収納した固定子コイルと、前記歯部鉄心の外周に
嵌合したリング状のヨーク部鉄心と、前記各歯部の内周
側先端に設けた疑似スロットとを備えたことを特徴とす
る永久磁石形ブラシレス回転電機。1. A permanent magnet type brushless rotating electric machine in which a pseudo slot is provided at a tip of a tooth portion of a stator core, and a plurality of tooth portions projecting to the outer periphery, and a slot which is opened in the outer circumferential direction between the tooth portions. Portion, and a tooth core made up of a connecting portion that connects the inner circumference side of the adjacent tooth portion, a stator coil housed in the slot portion, and a ring fitted to the outer periphery of the tooth core. A permanent magnet type brushless rotary electric machine comprising: a yoke-shaped iron core; and a pseudo slot provided at an inner peripheral end of each tooth portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21333892A JPH0638412A (en) | 1992-07-17 | 1992-07-17 | Permanent magnet type brushless rotating electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21333892A JPH0638412A (en) | 1992-07-17 | 1992-07-17 | Permanent magnet type brushless rotating electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0638412A true JPH0638412A (en) | 1994-02-10 |
Family
ID=16637502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21333892A Pending JPH0638412A (en) | 1992-07-17 | 1992-07-17 | Permanent magnet type brushless rotating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0638412A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001346A (en) * | 2012-11-28 | 2013-03-27 | 江苏洛克电气有限公司 | Vehicle air conditioner compressing motor |
| CN103166409A (en) * | 2011-12-14 | 2013-06-19 | 元山科技工业股份有限公司 | inner rotor motor |
| US9080279B2 (en) | 2011-10-24 | 2015-07-14 | Lg Electronics Inc. | Washing machine to produce three-dimensional motion |
| CN106972655A (en) * | 2017-01-21 | 2017-07-21 | 浙江悍马光电设备有限公司 | Three-phase brushless motor of dust collector |
-
1992
- 1992-07-17 JP JP21333892A patent/JPH0638412A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9290881B2 (en) | 2011-10-20 | 2016-03-22 | Lg Electronics Inc. | Washing machine to produce three-dimensional motion |
| US9080279B2 (en) | 2011-10-24 | 2015-07-14 | Lg Electronics Inc. | Washing machine to produce three-dimensional motion |
| US9255354B2 (en) | 2011-10-24 | 2016-02-09 | Lg Electronics Inc. | Washing machine to produce three-dimensional motion |
| US9279209B2 (en) | 2011-10-24 | 2016-03-08 | Lg Electronics Inc. | Washing machine to produce three-dimensional motion |
| CN103166409A (en) * | 2011-12-14 | 2013-06-19 | 元山科技工业股份有限公司 | inner rotor motor |
| CN103001346A (en) * | 2012-11-28 | 2013-03-27 | 江苏洛克电气有限公司 | Vehicle air conditioner compressing motor |
| CN106972655A (en) * | 2017-01-21 | 2017-07-21 | 浙江悍马光电设备有限公司 | Three-phase brushless motor of dust collector |
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