JPH03101143U - - Google Patents
Info
- Publication number
- JPH03101143U JPH03101143U JP984790U JP984790U JPH03101143U JP H03101143 U JPH03101143 U JP H03101143U JP 984790 U JP984790 U JP 984790U JP 984790 U JP984790 U JP 984790U JP H03101143 U JPH03101143 U JP H03101143U
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- angle
- center
- point
- straight line
- 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.)
- Granted
Links
- 230000004907 flux Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
第１図は本考案の実施例に係る１２極の永久磁
石式回転電機を示す正面図、第２図は永久磁石を
一部切欠いて示す正面図、第３図は各磁石形状で
のコギングトルク特性を示すグラフ、第４図及び
第５図は従来技術に係る永久磁石の固定態様を説
明するための説明図である。
図面中、１……永久磁石、２……電機子鉄心、
Ａ……第１の点、Ｂ……第２の点、Ｃ……第３の
点、ｌ１……第１の直線、ｌ２……第２の直線で
ある。
Fig. 1 is a front view showing a 12-pole permanent magnet rotating electric machine according to an embodiment of the present invention, Fig. 2 is a front view showing a permanent magnet with a part cut away, and Fig. 3 is a cogging torque for each magnet shape. Graphs showing the characteristics, FIGS. 4 and 5, are explanatory diagrams for explaining the manner in which permanent magnets are fixed according to the prior art. In the drawing, 1... permanent magnet, 2... armature core,
A...first point, B...second point, C...third point, l1 ...first straight line, l2 ...second straight line.
Claims (1)
となる一対の永久磁石が、電機子鉄心の３ｍ（ｍ
は正整数）本のスロツトに対向するタイプの回転
電機であつて、 回転方向に関し永久磁石の中央位置を角度で０
゜としたとき、 （） 各永久磁石の各角度θ゜（角度は電気角
）における磁束密度Ｂθが、 θ２＜θ＜θ１の区間で Ｂ（θ）＝Ｂｍ となるとともに、 （） −９０゜≦θ≦θ２及びθ１≦θ≦θ９
０゜の区間で、 回転電機の中心から放射状に伸びるθ１，θ２
の角度を与える直線と永久磁石との交点である第
１の点、 回転電機の中心と永久磁石の中心位置とを通る
直線である磁石中心軸に対して直角で前記第１の
点を通る直線と、 Ｂ（θ）＝ＢｍＣθＯ〔３ｍ２ｎ（θ−θ２）
〕及び Ｂ（θ）＝ＢｍＣθＯ〔３ｍ２ｎ（θ−θ１）
〕となるような 曲線との交点である第２の点、及び 永久磁石の端部を与える第３の点 但し θ１＝９０゜（１−２ｍ３ｎ） θ２＝−９０゜（１−３ｍ２ｎ）＝−θ１ ｎは正整数 3/2ｍ≧ｎ Ｂｍは定数 を夫々通る第１及び第２の直線で規定される形状
となる永久磁石を有することを特徴とする永久磁
石式回転電機。[Scope of Claim for Utility Model Registration] The field magnet is formed of a plurality of permanent magnets, and a pair of permanent magnets forming a pair of poles are arranged in a 3 m (m
is a positive integer) This is a rotating electric machine of the type that faces the slots, and the center position of the permanent magnet is set at an angle of 0 with respect to the direction of rotation.
When ゜, () the magnetic flux density Bθ at each angle θ゜ (angle is electrical angle) of each permanent magnet becomes B(θ) = B m in the interval θ 2 < θ < θ 1 , and () -90°≦θ≦θ 2 and θ 1 ≦θ≦θ9
θ 1 , θ 2 extending radially from the center of the rotating electrical machine in the 0° section
A first point that is the intersection of the permanent magnet and a straight line that gives an angle of , A straight line passing through the first point at right angles to the magnet center axis, which is a straight line passing through the center of the rotating electrical machine and the center position of the permanent magnet. And, B(θ)=B m CθO [3m2n(θ−θ 2 )
] and B(θ)=B m CθO[3m2n(θ−θ 1 )
The second point is the intersection with the curve such that =-θ 1 n is a positive integer 3/2m≧n B A permanent magnet rotating electrical machine characterized by having a permanent magnet having a shape defined by first and second straight lines passing through a constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990009847U JPH087800Y2 (en) | 1990-02-05 | 1990-02-05 | Permanent magnet type rotating electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990009847U JPH087800Y2 (en) | 1990-02-05 | 1990-02-05 | Permanent magnet type rotating electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03101143U true JPH03101143U (en) | 1991-10-22 |
| JPH087800Y2 JPH087800Y2 (en) | 1996-03-04 |
Family
ID=31513435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990009847U Expired - Lifetime JPH087800Y2 (en) | 1990-02-05 | 1990-02-05 | Permanent magnet type rotating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH087800Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01120774U (en) * | 1988-02-03 | 1989-08-16 |
-
1990
- 1990-02-05 JP JP1990009847U patent/JPH087800Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01120774U (en) * | 1988-02-03 | 1989-08-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH087800Y2 (en) | 1996-03-04 |
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