JPS6135144A - Permanent magnet machine - Google Patents

Permanent magnet machine

Info

Publication number
JPS6135144A
JPS6135144A JP15307084A JP15307084A JPS6135144A JP S6135144 A JPS6135144 A JP S6135144A JP 15307084 A JP15307084 A JP 15307084A JP 15307084 A JP15307084 A JP 15307084A JP S6135144 A JPS6135144 A JP S6135144A
Authority
JP
Japan
Prior art keywords
permanent magnet
salient
winding
grooves
armature
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
Application number
JP15307084A
Other languages
Japanese (ja)
Inventor
Fumio Tajima
文男 田島
Hiroshi Katayama
博 片山
Kunio Miyashita
邦夫 宮下
Teizo Tamura
田村　禎三
Kenichi Hironaka
健一 弘中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15307084A priority Critical patent/JPS6135144A/en
Priority to KR1019850005284A priority patent/KR920000717B1/en
Priority to EP85109343A priority patent/EP0169569B1/en
Priority to DE8585109343T priority patent/DE3580624D1/en
Priority to US06/758,699 priority patent/US4672253A/en
Publication of JPS6135144A publication Critical patent/JPS6135144A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Brushless Motors (AREA)

Abstract

PURPOSE:To obtain a permanent magnet motor capable of further reducing a cogging torque by increasing the width of an auxiliary groove larger than that between salient poles when the auxiliary groove is formed on the surface of the salient pole of an armature. CONSTITUTION:In a permanent magnet motor in which an armature winding 72 is wound to form an armature to obtain a relative rotation between the armature and a permanent magnet field 2 opposed thereto, auxiliary grooves 8c1, 8d1, 8e1 are formed on the surface of the salient-pole 52 for winding, and the widths H2 of the auxiliary grooves 8c1-8e1 are formed larger than the width H1 of the grooves 8a1, 8b1 between the salient poles. Thus, since the auxiliary grooves have width larger than the grooves for the winding having a large depth, the magnetic effects of the both grooves can be equalized to further reduce the cogging torque.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は、コア付の永久磁石機に係、す、特に、トルク
脈動の少ないことが要求されるテープ駆動モータ等に好
適な永久磁石機に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a permanent magnet machine with a core, and particularly to a permanent magnet machine suitable for tape drive motors, etc., which are required to have little torque pulsation. .

〔発明の背景〕[Background of the invention]

突極磁極を有する回転電機において、コギングトルクを
低減する方法として、突極磁極の表面に補助溝を設けて
低減する方法が、実開昭５０−３２５０２号、特公昭５
８−４２７０７号等に開示されている。これらの実施例
において補助溝の幅は突極間の溝とほぼ同一になされて
いるが、突極間の溝の深さが犬であるのに対し、補助溝
の深さが浅いために、十分にその効果を発揮できないの
でコギングトルクがそれ程低下しないものであった。In a rotating electric machine having salient magnetic poles, a method of reducing cogging torque by providing auxiliary grooves on the surface of the salient magnetic pole is disclosed in Utility Model Application No. 50-32502 and Japanese Patent Publication No. 50-32502.
No. 8-42707 and the like. In these embodiments, the width of the auxiliary groove is approximately the same as the groove between the salient poles, but the depth of the groove between the salient poles is dog-shaped, whereas the depth of the auxiliary groove is shallow. Since the effect could not be fully exhibited, the cogging torque did not decrease that much.

〔発明の目的〕[Purpose of the invention]

本発明は、補助溝原理を利用したものにおいて、更にコ
ギングトルクを低下しうる永久磁石回転機を提供するに
ある。The present invention provides a permanent magnet rotating machine that utilizes the auxiliary groove principle and can further reduce cogging torque.

〔発明の概要〕[Summary of the invention]

本発明は、この種構造の永久磁石機において、突極磁極
表面に設けた補助溝の幅を、突極磁極間の幅よシ大きく
して、コギングトルクを低下するものである。The present invention is a permanent magnet machine having this type of structure, in which the width of the auxiliary groove provided on the surface of the salient magnetic poles is made larger than the width between the salient magnetic poles, thereby reducing the cogging torque.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の一実施例を図面を参照しつつ説明する。 An embodiment of the present invention will be described below with reference to the drawings.

第２図は本発明の対象とする永久磁石回転機の断面構造
を示す。図において、回転子たる永久磁石磁極１は４極
に着磁されたリング状永久磁石２とヨーク部３とで構成
する。電機子４は巻線用突極５１，５２．５３と補助突
極６１，６２．６３とで構成し、巻線用突極５１，５２
．５３には、それぞれ、電機子巻線７１，７２．７３が
巻回されている。本モータは、ブラシレスモーフの場合
電機子巻線７１，７２．７３への通電を回転子１の位置
に応じて順次切シ替えて連続的な回転力を得る。FIG. 2 shows a cross-sectional structure of a permanent magnet rotating machine to which the present invention is applied. In the figure, a permanent magnet pole 1 serving as a rotor is composed of a ring-shaped permanent magnet 2 magnetized into four poles and a yoke portion 3. The armature 4 is composed of salient poles 51, 52, 53 for winding and auxiliary salient poles 61, 62, 63.
．． 53 are wound with armature windings 71, 72, and 73, respectively. In the case of a brushless morph, this motor sequentially switches the energization of the armature windings 71, 72, and 73 according to the position of the rotor 1 to obtain continuous rotational force.

８　ａ　＋　＋　　８　ａ　２　ｒ　　８　ａ　３＊　
８　ｂ＋　＋　８ｂ２　＋８ｂ３は突極磁極間に位置す
る巻線用の溝であり、また、永久磁石磁極２と対向する
巻線用突極５１゜５２．５３の外表面には、補助溝８’
１ｇ８Ｃ２＋８　Ｃ３＋　８　ｄｌ　Ｔ　８　ｄ２　Ｔ
　８ｄ３１８ｅＩ　１８ｅ２，８ｅ３が設けられ、これ
らは巻線用の溝を含めてほぼ等間隔に配置する。8 a + + 8 a 2 r 8 a 3*
8b+ + 8b2 +8b3 are winding grooves located between the salient magnetic poles, and an auxiliary groove 8' is provided on the outer surface of the winding salient pole 51°52.53 facing the permanent magnet magnetic pole 2.
1g8C2+8 C3+ 8 dl T 8 d2 T
8d318eI 18e2, 8e3 are provided, and these are arranged at approximately equal intervals including the groove for the winding.

この様モータは回転子から見て、巻線用の溝と補助溝と
が同じ磁気的効果を持つため、巻線用溝単独に比較して
コギングトルクが小さくなる。In such a motor, since the winding groove and the auxiliary groove have the same magnetic effect when viewed from the rotor, the cogging torque is smaller than that of the winding groove alone.

第１図（ａ）、　（ｂ）に本発明モータの周方向展開図
と要部拡大図を示す。一般に巻線用溝は、空隙面より電
機子巻線に到るまで空隙であるのに対し、補助溝は、外
周側には巻線用突極があり、両者同一の幅では、補助溝
のパーミアンスが犬となる。本発明では、補助溝の幅Ｈ
２を巻線用溝の幅Ｈ１よシ大ならしめ、それによって、
補助溝と巻線用溝の磁気的な平衡をはかった。これによ
って、回転子外周から見た巻線用溝と補助溝とが磁気的
に同じ効果を持ち、コギングトルクを十分小さくできる
。FIGS. 1(a) and 1(b) show a developed view in the circumferential direction and an enlarged view of the main parts of the motor of the present invention. In general, a winding groove is a gap from the gap surface to the armature winding, whereas an auxiliary groove has a salient winding pole on the outer circumferential side, and if both widths are the same, the auxiliary groove Permeance becomes a dog. In the present invention, the width H of the auxiliary groove
2 is made larger than the width H1 of the winding groove, thereby,
The magnetic balance between the auxiliary groove and the winding groove was determined. As a result, the winding groove and the auxiliary groove have the same magnetic effect when viewed from the outer circumference of the rotor, and the cogging torque can be sufficiently reduced.

尚、本発明は回転するものに限らず、直線的に移動する
永久磁石機にも同様適用されるものである。Note that the present invention is not limited to rotating machines, but is similarly applicable to linearly moving permanent magnet machines.

〔発明の効果〕〔Effect of the invention〕

以上の構成によればコギングトルクを大幅に低げること
ができるのでＶＴＲ，テープ駆動モータ第１図（ａ）お
よび（ｂ）は本発明の要部をそれぞれ示す展開断面図、
第２図は本発明が適用される永久磁石機の断面図である
。According to the above configuration, the cogging torque can be significantly reduced. FIGS. 1(a) and 1(b) are developed cross-sectional views showing the main parts of the present invention, respectively.
FIG. 2 is a sectional view of a permanent magnet machine to which the present invention is applied.

１・・・永久磁石界磁部、２・・・永久磁石磁極、３・
・・ヨ一り部、４・・・電機子、５１，５２．５３・・
・巻線用突極、６１，６２．も３・・・補助突極、７１
，７２゜７３・・・電機子巻線、８ａｌ　Ｉ　８ａ２．
８ａ３゜８”　＋　　８ｂｚ　ｅ　８　ｂ３　＝−巻線
用滴、８ｃ１゜８ｃ２　．８ｃ３　．８ｄ１．８ｄ２　
．８ｄ３　．８ｅ１゜８ｅ２，８ｅ３・・・補助溝。1... Permanent magnet field part, 2... Permanent magnet magnetic pole, 3...
・Yo part, 4... Armature, 51, 52.53...
・Salient poles for winding, 61, 62. Mo3... Auxiliary salient pole, 71
, 72° 73... Armature winding, 8al I 8a2.
8a3゜8" + 8bz e 8 b3 = - drop for winding, 8c1゜8c2 .8c3 .8d1.8d2
．． 8d3. 8e1゜8e2, 8e3... Auxiliary groove.

Claims (1)

【特許請求の範囲】[Claims] １、永久磁石磁極と、突極の全てもしくは一部に電機子
巻線を備えた突極磁極で構成した電機子部とからなり、
前記突極磁極の表面に補助溝を有した永久磁石機におい
て、突極磁極表面に設けた補助溝の幅を、突極磁極間の
幅よりも大ならしめたことを特徴とする永久磁石機。1. Consists of a permanent magnet magnetic pole and an armature part composed of a salient magnetic pole with an armature winding on all or part of the salient pole,
A permanent magnet machine having an auxiliary groove on the surface of the salient magnetic pole, characterized in that the width of the auxiliary groove provided on the surface of the salient magnetic pole is larger than the width between the salient magnetic poles. .
JP15307084A 1984-07-25 1984-07-25 Permanent magnet machine Pending JPS6135144A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP15307084A JPS6135144A (en) 1984-07-25 1984-07-25 Permanent magnet machine
KR1019850005284A KR920000717B1 (en) 1984-07-25 1985-07-24 Brushless motor
EP85109343A EP0169569B1 (en) 1984-07-25 1985-07-25 Permanent magnet electrical machine
DE8585109343T DE3580624D1 (en) 1984-07-25 1985-07-25 ELECTRIC MACHINE WITH PERMANENT MAGNET.
US06/758,699 US4672253A (en) 1984-07-25 1985-07-25 Permanent magnet electrical machine with reduced cogging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15307084A JPS6135144A (en) 1984-07-25 1984-07-25 Permanent magnet machine

Publications (1)

Publication Number Publication Date
JPS6135144A true JPS6135144A (en) 1986-02-19

Family

ID=15554325

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15307084A Pending JPS6135144A (en) 1984-07-25 1984-07-25 Permanent magnet machine

Country Status (1)

Country Link
JP (1) JPS6135144A (en)

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