JP2014045533A - Rotor of synchronous motor - Google Patents

Rotor of synchronous motor Download PDF

Info

Publication number
JP2014045533A
JP2014045533A JP2012185034A JP2012185034A JP2014045533A JP 2014045533 A JP2014045533 A JP 2014045533A JP 2012185034 A JP2012185034 A JP 2012185034A JP 2012185034 A JP2012185034 A JP 2012185034A JP 2014045533 A JP2014045533 A JP 2014045533A
Authority
JP
Japan
Prior art keywords
slit
rotor
magnet
magnetic
magnet material
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
Application number
JP2012185034A
Other languages
Japanese (ja)
Other versions
JP6017885B2 (en
Inventor
Yoshimitsu Inoue
芳光 井上
Tsuneichi Kawai
庸市 川井
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.)
Okuma Corp
Original Assignee
Okuma Corp
Okuma Machinery Works 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 Okuma Corp, Okuma Machinery Works Ltd filed Critical Okuma Corp
Priority to JP2012185034A priority Critical patent/JP6017885B2/en
Publication of JP2014045533A publication Critical patent/JP2014045533A/en
Application granted granted Critical
Publication of JP6017885B2 publication Critical patent/JP6017885B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a motor capable of obtaining desired torque or a rotational speed and capable of being manufactured at low cost.SOLUTION: A magnet material 115 is embedded over a total length of a slit 103. According to induced voltage, part of the magnet material 115 is magnetized. Thereby, since a cavity part of the slit 103 is eliminated, the slit 103 part is restrained and stress concentration is relaxed. Since a process of filling a separate member such as an insulating resin is eliminated, cost increase due to an increase of a work process is suppressed.

Description

本発明は、同期電動機の回転子のスリット構造に関する。   The present invention relates to a slit structure of a rotor of a synchronous motor.

図３は、下記特許文献１の図６に開示されている同期電動機の回転子を示した図である。この回転子は、円板状の高透磁率材料にプレス加工を施して成型された回転子素片１０１を回転軸方向に複数枚積層し、固着して作られる。この回転子では、回転子素片１０１の互いに直交する２本の直径線１０２に対して対称なスリット１０３を複数形成することで、複数の磁路１０４，１０６を形成し、回転子の円周方向に磁気抵抗分布を発生させる。そして、前記直径線１０２の近傍に固定子円周部で結集した低磁気抵抗部分が４個の磁極１０５をなして、回転磁界内で回転軸回りに回転する。このとき隣接する磁路は互いに分離され、磁気的に絶縁された状態であった方が磁極の磁気抵抗差が大きくなるためモータのトルクは向上するが、回転子の形状維持のため、隣接する磁路は磁路１０４と磁路１０６のように回転子外周部のごく一部で結合部１０７を設け結合してある。   FIG. 3 is a view showing a rotor of the synchronous motor disclosed in FIG. 6 of Patent Document 1 below. This rotor is made by laminating a plurality of rotor element pieces 101 formed by pressing a disk-shaped high magnetic permeability material in the direction of the rotation axis and fixing them. In this rotor, by forming a plurality of symmetrical slits 103 with respect to two diameter lines 102 orthogonal to each other of the rotor element 101, a plurality of magnetic paths 104 and 106 are formed, and the circumference of the rotor Generate a magnetoresistance distribution in the direction. The low magnetic resistance portions gathered around the stator circumference in the vicinity of the diameter line 102 form four magnetic poles 105 and rotate around the rotation axis in the rotating magnetic field. At this time, the magnetic paths adjacent to each other are separated from each other, and the magnetic resistance difference between the magnetic poles increases because the magnetic resistance difference between the magnetic poles increases. The magnetic path is coupled by providing a coupling portion 107 at a very small part of the outer periphery of the rotor like the magnetic path 104 and the magnetic path 106.

図４は、下記特許文献２の図７に開示されている同期電動機の回転子を示す図である。この回転子と図３の回転子との異なる点は、複数のスリット１０３に永久磁石１１０を埋め込み構成している点である。このように永久磁石１１０を埋め込む目的は、スリット１０３を通り抜けてしまう漏れ磁束に対して逆方向の磁束を磁石１１０によって発生させることによって漏れ磁束を抑え、リラクタンストルクを増大させるためである。また、永久磁石１１０による磁束とステータ巻線に流れる電流との間にローレンツ力が生じるため、更に出力トルクを増大することができる。   FIG. 4 is a diagram showing a rotor of the synchronous motor disclosed in FIG. 7 of Patent Document 2 below. The difference between this rotor and the rotor of FIG. 3 is that a permanent magnet 110 is embedded in a plurality of slits 103. The purpose of embedding the permanent magnet 110 in this way is to suppress the leakage flux and increase the reluctance torque by causing the magnet 110 to generate a magnetic flux in the opposite direction to the leakage flux that passes through the slit 103. Further, since Lorentz force is generated between the magnetic flux generated by the permanent magnet 110 and the current flowing through the stator winding, the output torque can be further increased.

また、図４においては、永久磁石１１０をスリット１０３に部分的に埋め込んでいるが、下記特許文献３の図１に示すように、スリット全体に永久磁石１１０を埋め込み構成している同期電動機の回転子もある。   In FIG. 4, the permanent magnet 110 is partially embedded in the slit 103. However, as shown in FIG. 1 of Patent Document 3 below, the rotation of the synchronous motor in which the permanent magnet 110 is embedded in the entire slit is shown. There are also children.

特開平９−２６１９３０号公報JP-A-9-261930 特開２００６−２０３７６号公報JP 2006-20376 A 特開平８−３３１７８３号公報JP-A-8-331783 特開２０１０−７６７５２号公報JP 2010-76752 A

特許文献３で示された回転子のように、スリット全体に着磁した磁石が入れてあると、マグネットトルクは向上し、トルクはアップする。しかし磁束密度が高くなり誘起電圧を抑えることが出来ないため高速回転が困難になる。誘起電圧は電動機の回転数に比例する。誘起電圧が電源電圧より高くなるとモータに電流を印加出来なくなるため、電動機の回転数が低下することになる。   If a magnet magnetized in the entire slit is inserted like the rotor shown in Patent Document 3, the magnet torque is improved and the torque is increased. However, since the magnetic flux density increases and the induced voltage cannot be suppressed, high-speed rotation becomes difficult. The induced voltage is proportional to the rotation speed of the motor. When the induced voltage becomes higher than the power supply voltage, it becomes impossible to apply a current to the motor, so that the rotational speed of the electric motor decreases.

例えば高速回転が必要な場合は、特許文献１のように磁石を廃止したり、特許文献２のように、磁石の大きさを小さくしたりして、マグネットトルクを小さくすれば良い。又、トルクを向上させたい場合は磁石を大きくすればよい。ただし、この２つの特性のモータを1台で実現するのは難しく、２種類のモータを設計する必要があった。このように２種類のモータを製造すると、例えば磁石の金型も２種類必要なため、コストアップとなる。又、製造ロットも１／２になるため、生産効率が落ち、コストアップになる。   For example, when high-speed rotation is required, the magnet torque may be reduced by eliminating the magnet as in Patent Document 1 or by reducing the size of the magnet as in Patent Document 2. Moreover, what is necessary is just to enlarge a magnet, when improving torque. However, it is difficult to realize a motor having these two characteristics with one unit, and it is necessary to design two types of motors. If two types of motors are manufactured in this way, for example, two types of magnet molds are required, which increases costs. Further, since the production lot is also halved, the production efficiency is lowered and the cost is increased.

別の課題として、スリットに空洞が出来てしまうことで結合部１０７に応力集中が掛かり、高速回転が困難になる。理由は、スリット内に永久磁石が挿入されていない場合、モータが回転し、回転子に遠心力が掛かると、スリット部分が永久磁石で拘束されず自由に変形してしまうためである。図３で説明すると、結合部１０７が大きく変形し、応力が集中する。その変形を防ぐため、特許文献４では、スリットの空洞に電気絶縁性樹脂を充填しているが、その場合、磁石挿入作業に加え電気絶縁性樹脂を充填する作業工程が増え、コストアップとなる。   Another problem is that stress is concentrated on the coupling portion 107 due to the formation of a cavity in the slit, which makes high-speed rotation difficult. The reason is that when a permanent magnet is not inserted in the slit and the motor rotates and centrifugal force is applied to the rotor, the slit portion is not restrained by the permanent magnet and is freely deformed. If it demonstrates in FIG. 3, the coupling | bond part 107 will deform | transform greatly and stress will concentrate. In order to prevent such deformation, in Patent Document 4, the slit cavity is filled with an electrically insulating resin, but in that case, the number of work steps for filling the electrically insulating resin in addition to the magnet insertion work increases, resulting in an increase in cost. .

そこで、本発明では、所望のトルクまたは回転速度が得られ、より低コストで製造でき得る電動機を提供することを目的とする。   Accordingly, an object of the present invention is to provide an electric motor that can obtain a desired torque or rotational speed and can be manufactured at a lower cost.

高透磁率材料で構成され、複数のスリットが形成された同期電動機の回転子であって、各スリットは、周方向において互いに隣接する磁極と磁極との間に形成され、少なくとも一つのスリットには、その一部が着磁された磁石材料が埋め込まれている、ことを特徴とする。   A rotor of a synchronous motor made of a high permeability material and having a plurality of slits, each slit being formed between magnetic poles adjacent to each other in the circumferential direction, and at least one slit being A magnet material partially magnetized is embedded.

スリットに磁石材料を入れ、着磁する範囲を変更することで同じ構造で特性の異なるモータを容易に製造することができる。これによりサイズの異なる磁石製作が不要となり、磁石製作を行なう金型費のコストアップを抑制することができる。さらに、モータの製造ロット数が増えるため、効率的に生産することが可能になり、コストアップを抑制することができる。   A motor having the same structure and different characteristics can be easily manufactured by inserting a magnet material into the slit and changing the magnetizing range. As a result, it is not necessary to manufacture magnets having different sizes, and it is possible to suppress an increase in mold costs for manufacturing the magnets. Furthermore, since the number of motor production lots increases, it is possible to produce efficiently and to suppress an increase in cost.

またスリット全体に磁石材料を入れ一体成形することで、スリット部分が拘束されるため、結合部に掛かる応力集中が緩和されるとともに電気絶縁性樹脂等の別部材を充填する工程が無くなり、作業工程の増加によるコストアップを抑制することができる。   Also, since the slit part is constrained by putting the magnet material all over the slit and integrally molding it, the stress concentration applied to the joint is relaxed and there is no need to fill in another member such as an electrically insulating resin. The increase in cost due to the increase in

本発明の実施形態における、同期電動機回転子の断面図である。It is sectional drawing of the synchronous motor rotor in embodiment of this invention. 他の回転子の一部拡大図である。It is a partially enlarged view of another rotor. 他の回転子の一部拡大図である。It is a partially enlarged view of another rotor. 他の回転子の一部拡大図である。It is a partially enlarged view of another rotor. 他の回転子の一部拡大図である。It is a partially enlarged view of another rotor. 他の回転子の一部拡大図である。It is a partially enlarged view of another rotor. 本発明の他の実施形態における、同期電動機回転子の断面図である。It is sectional drawing of the synchronous motor rotor in other embodiment of this invention. 従来の同期電動機の回転子を示す図である。It is a figure which shows the rotor of the conventional synchronous motor. 従来の同期電動機の回転子を示す図である。It is a figure which shows the rotor of the conventional synchronous motor.

以下、図面を参照しつつ、本発明の実施形態について説明する。図１ａは、本発明の実施形態における、同期電動機回転子の断面図である。この回転子は、円板状の高透磁率材料にプレス加工を施して成型された回転子素片１０１を回転軸方向に複数枚積層し、固着して作られる。回転子素片１０１の互いに直交する２本の直径線１０２に対して、対称に複数のスリット１０３を形成することで、複数の磁路１２５，１２６，１２７を形成し、回転子の円周方向に磁気抵抗分布を発生させる。そして、前記直径線１０２の近傍に固定子円周部で結集した低磁気抵抗部分が４個の磁極をなして、回転磁界内で回転軸回りに回転する。このとき隣接する磁路１２５，１２６，１２７は互いに分離され、磁気的に絶縁された状態であった方が磁極の磁気抵抗差が大きくなるためモータのトルクは向上するが、回転子の形状維持のため、各スリット１０３の端部と回転子素片１０１の周縁との間には隣接する磁路１２５，１２６，１２７同士を接続する結合部１２０，１２１，１２２を設けている。以上の構造については、図３と同様である。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1a is a cross-sectional view of a synchronous motor rotor in an embodiment of the present invention. This rotor is made by laminating a plurality of rotor element pieces 101 formed by pressing a disk-shaped high magnetic permeability material in the direction of the rotation axis and fixing them. A plurality of slits 103 are formed symmetrically with respect to two diameter lines 102 of the rotor element 101 that are orthogonal to each other, thereby forming a plurality of magnetic paths 125, 126, 127, and the circumferential direction of the rotor To generate a magnetoresistance distribution. Then, the low magnetic resistance portion gathered around the stator circumference in the vicinity of the diameter line 102 forms four magnetic poles and rotates around the rotation axis in the rotating magnetic field. At this time, the adjacent magnetic paths 125, 126, and 127 are separated from each other and magnetically insulated, the magnetic resistance difference between the magnetic poles increases, so that the motor torque is improved, but the rotor shape is maintained. Therefore, coupling portions 120, 121, and 122 that connect adjacent magnetic paths 125, 126, and 127 are provided between the ends of the slits 103 and the periphery of the rotor element 101. About the above structure, it is the same as that of FIG.

本実施形態では、複数のスリット１０３に、全長にわたり磁石材料１１５を埋め込んでいる。磁石材料１１５は、予めスリット１０３と同形状に製作されたものをスリット１０３に挿入し接着する方法や、ボンド磁石をスリット１０３に充填して一体成形する方法でスリット１０３に埋め込まれる。そして、磁石材料１１５の一部分には着磁が施され、他の部分は着磁されないままとなっている。図１ａにおいては、各スリット１０３の中央部（符号１１６で示した箇所）が着磁された着磁部１１６である。上述した磁石材料１１５は、各スリット１０３の断面形状に合わせて成形されている。また、磁石材料１１５の軸方向の長さは、電磁鋼板の積層の厚みに合わせて決定される。磁石材料１１５の着磁は、電磁鋼板に組み付ける前に必要部分の着磁を行ってもよいし、電磁鋼板に組み付けた後で着磁してもよい。   In the present embodiment, the magnet material 115 is embedded in the plurality of slits 103 over the entire length. The magnet material 115 is embedded in the slit 103 by a method in which a material manufactured in advance with the same shape as the slit 103 is inserted into the slit 103 and bonded, or a method in which a bonded magnet is filled into the slit 103 and integrally formed. A part of the magnet material 115 is magnetized, and the other part is not magnetized. In FIG. 1 a, the central portion (location indicated by reference numeral 116) of each slit 103 is a magnetized portion 116 that is magnetized. The magnet material 115 described above is formed in accordance with the cross-sectional shape of each slit 103. Further, the axial length of the magnet material 115 is determined in accordance with the thickness of the laminated magnetic steel sheets. Magnetization of the magnet material 115 may be performed before magnetizing the electromagnetic steel sheet, or may be magnetized after it is assembled to the electromagnetic steel sheet.

この着磁の範囲は、誘起電圧に応じて、設定されることが望ましい。なお、誘起電圧は、電動機の回転数（回転速度）に比例するため、誘起電圧は、電動機の定格回転速度などから推測することができる。そして、誘起電圧（回転数）が大きいほど、磁束密度が小さくなるように、着磁の範囲を小さくすることが望ましい。なお、具体的な着磁範囲は、実験などにより求めることができる。   This magnetization range is desirably set according to the induced voltage. Since the induced voltage is proportional to the rotation speed (rotation speed) of the electric motor, the induced voltage can be estimated from the rated rotation speed of the electric motor. And it is desirable to make the range of magnetization small so that the greater the induced voltage (the number of rotations), the smaller the magnetic flux density. The specific magnetization range can be obtained by experiments or the like.

このように、スリット１０３と同形状の磁石材料１１５をスリット１０３に埋め込んだうえで、当該磁石材料１１５の着磁する範囲を変更することで、同じ構造でありながら特性の異なるモータを容易に製造することができる。これによりサイズの異なる磁石製作が不要となり、磁石製作を行なう金型費のコストアップを抑制することができる。更にモータの製造ロット数が増えるため、効率的に生産することが可能になり、コストアップを抑制することができる。   In this manner, by embedding the magnet material 115 having the same shape as the slit 103 in the slit 103 and changing the magnetized range of the magnet material 115, a motor having the same structure but different characteristics can be easily manufactured. can do. As a result, it is not necessary to manufacture magnets having different sizes, and it is possible to suppress an increase in mold costs for manufacturing the magnets. Furthermore, since the number of motor production lots increases, it becomes possible to produce efficiently and to suppress an increase in cost.

またスリット１０３全体に磁石材料１１５を入れ一体成形することで、スリット１０３の形状が拘束されるため、結合部１２０，１２１，１２２に掛かる応力集中が緩和されるとともに電気絶縁性樹脂等の別部材を充填する工程が無くなり、作業工程の増加によるコストアップを抑制することができる。   Moreover, since the shape of the slit 103 is constrained by putting the magnet material 115 in the entire slit 103 and integrally forming it, the stress concentration applied to the coupling portions 120, 121, 122 is alleviated and another member such as an electrically insulating resin is used. This eliminates the step of filling the material, and can suppress an increase in cost due to an increase in work steps.

なお、図１ａでは、全ての磁石材料１１５に着磁部１１６を設けているが、磁束密度を調整するために、一部の磁石材料１１５にのみ着磁部１１６を設けるようにしてもよい。例えば、図１ｂ〜図１ｅに示すように、一部の磁石材料１１５にのみ着磁部１１６を設けてもよい。   In FIG. 1a, the magnetized portions 116 are provided in all the magnet materials 115, but the magnetized portions 116 may be provided only in some of the magnet materials 115 in order to adjust the magnetic flux density. For example, as shown in FIGS. 1 b to 1 e, the magnetized portion 116 may be provided only in a part of the magnet material 115.

また、図１ｆに示すように、外周部に空隙部１３５を設けてもよい。このように、スリット１０３の大半（スリット１０３の両端近傍以外の部分）に磁石材料１１５が挿入されていれば、外周部に空隙部１３５があったとしても、スリット１０３の変形が効果的に防止でき、ひいては、結合部１２０，１２１，１２２への応力集中を緩和することが出来るためである。その一方で、外周部に空隙部１３５を設けることにより、磁石材料１１５の端部形状をスリット１０３の円周方向に直角にするなど単純形状に出来るため、磁石材料１１５の製作が容易となり、安価に製作できる。   Further, as shown in FIG. 1f, a gap portion 135 may be provided on the outer peripheral portion. As described above, if the magnet material 115 is inserted in most of the slit 103 (portions other than the vicinity of both ends of the slit 103), the deformation of the slit 103 is effectively prevented even if there is a gap 135 in the outer peripheral portion. This is because the stress concentration on the joints 120, 121, 122 can be relaxed. On the other hand, by providing the gap portion 135 in the outer peripheral portion, the shape of the end of the magnet material 115 can be made simple, such as making it perpendicular to the circumferential direction of the slit 103, making the magnet material 115 easy to manufacture and inexpensive. Can be produced.

また、回転子の外周に近いスリット１０３の磁石材料１１５のみ省略してもよい。この理由を説明する。回転子が回転した場合、最内周のスリット１０３の両端に位置する結合部１２０は、磁路１２５，１２６，１２７に掛かる遠心力を保持する必要がある。一方、中間のスリット１０３の両端に位置する結合部１２１は、磁路１２５，１２６に掛かる遠心力、最外周のスリット１０３の両端に位置する結合部１２２は、磁路１２５に掛かる遠心力を保持すればよい。よって、結合部に掛かる応力は、結合部１２０が一番大きく、次に結合部１２１、結合部１２２の順になる。すなわち結合部１２２に掛かる応力は、結合部１２０より小さいので回転子の外周に近いスリット１０３は磁石材料１１５を入れて補強しなくても材料の許容応力以下となることがあり、この場合は、磁石材料１１５を省略できる。   Further, only the magnet material 115 of the slit 103 close to the outer periphery of the rotor may be omitted. The reason for this will be explained. When the rotor rotates, the coupling portions 120 located at both ends of the innermost slit 103 need to maintain the centrifugal force applied to the magnetic paths 125, 126, and 127. On the other hand, the coupling portions 121 positioned at both ends of the intermediate slit 103 hold centrifugal force applied to the magnetic paths 125 and 126, and the coupling portions 122 positioned at both ends of the outermost slit 103 hold centrifugal force applied to the magnetic path 125. do it. Therefore, the stress applied to the joint portion is the largest in the joint portion 120, and then comes in the order of the joint portion 121 and the joint portion 122. That is, since the stress applied to the coupling portion 122 is smaller than the coupling portion 120, the slit 103 near the outer periphery of the rotor may be less than the allowable stress of the material even if the magnet material 115 is not reinforced, in this case, The magnet material 115 can be omitted.

図２は、本発明の他の実施形態における、電動機回転子の断面図である。図１との違いは、スリット１０３の中央付近に繋ぎ部１３０を設けている点である。この繋ぎ部１３０により回転子が補強されるため、図１の回転子より、更に高速回転が可能となる。   FIG. 2 is a cross-sectional view of an electric motor rotor according to another embodiment of the present invention. The difference from FIG. 1 is that a connecting portion 130 is provided near the center of the slit 103. Since the rotor is reinforced by the connecting portion 130, the rotor can be rotated at a higher speed than the rotor of FIG.

図１，２の同期電動機は、磁気抵抗となる複数のスリット１０３を設けることで、磁極１０５から隣あう磁極１０５に磁路１２５，１２６，１２７を形成することで、トルクを発生させる。従って、スリット１０３を横断する方向に磁束が生成されると、発生トルクは低下する。図２のように繋ぎ部１３０を設けると、このスリット１０３を横断する方向に漏れ磁束が発生することになるため、トルクが低下する。また、一つのスリット１０３に挿入される磁石材料１１５が分割されるため、磁石の挿入工数が増加するというデメリットもあるが、上述したように、回転数の向上には効果がある。なお、図２の形態では、一つのスリット１０３に繋ぎ部１３０を一つしか設けていないが、繋ぎ部１３０は、より多数であってもよい。   The synchronous motor shown in FIGS. 1 and 2 generates a torque by forming magnetic paths 125, 126, and 127 in the magnetic pole 105 adjacent to the magnetic pole 105 by providing a plurality of slits 103 serving as a magnetic resistance. Therefore, when a magnetic flux is generated in a direction crossing the slit 103, the generated torque decreases. When the connecting portion 130 is provided as shown in FIG. 2, a leakage magnetic flux is generated in a direction crossing the slit 103, so that the torque is reduced. Further, since the magnet material 115 inserted into one slit 103 is divided, there is a demerit that the man-hour for inserting the magnet is increased. However, as described above, there is an effect in improving the rotation speed. In the form of FIG. 2, only one connecting portion 130 is provided in one slit 103, but there may be more connecting portions 130.

１０１ 回転子素片、１０２ 直径線、１０３ スリット、１０４，１０６，１２５，１２６，１２７ 磁路、１０５ 磁極、１０７，１２０，１２１，１２２ 結合部、１１０ 永久磁石、１１５ 磁石材料、１１６ 着磁部、１３０ 繋ぎ部、１３５ 空隙部。   101 rotor element, 102 diameter line, 103 slit, 104, 106, 125, 126, 127 magnetic path, 105 magnetic pole, 107, 120, 121, 122 coupling part, 110 permanent magnet, 115 magnet material, 116 magnetized part , 130 connecting part, 135 gap part.

Claims (1)

高透磁率材料で構成され、複数のスリットが形成された同期電動機の回転子であって、
各スリットは、周方向において互いに隣接する磁極と磁極との間に形成され、
少なくとも一つのスリットには、その一部が着磁された磁石材料が埋め込まれている、
ことを特徴とする同期電動機の回転子。 A rotor of a synchronous motor made of a high permeability material and having a plurality of slits,
Each slit is formed between the magnetic poles adjacent to each other in the circumferential direction,
At least one slit is embedded with a magnet material partially magnetized,
The rotor of the synchronous motor characterized by the above-mentioned.
JP2012185034A 2012-08-24 2012-08-24 Synchronous motor rotor Active JP6017885B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012185034A JP6017885B2 (en) 2012-08-24 2012-08-24 Synchronous motor rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012185034A JP6017885B2 (en) 2012-08-24 2012-08-24 Synchronous motor rotor

Publications (2)

Publication Number Publication Date
JP2014045533A true JP2014045533A (en) 2014-03-13
JP6017885B2 JP6017885B2 (en) 2016-11-02

Family

ID=50396438

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012185034A Active JP6017885B2 (en) 2012-08-24 2012-08-24 Synchronous motor rotor

Country Status (1)

Country Link
JP (1) JP6017885B2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000092763A (en) * 1998-09-18 2000-03-31 Toshiba Corp Permanent magnet type motor
JP2006340556A (en) * 2005-06-06 2006-12-14 Shin Etsu Chem Co Ltd Permanent magnet member for interior magnet-type rotary electric machine and rotary electric machine
JP2007244026A (en) * 2006-03-06 2007-09-20 Daikin Ind Ltd Rotary electric machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000092763A (en) * 1998-09-18 2000-03-31 Toshiba Corp Permanent magnet type motor
JP2006340556A (en) * 2005-06-06 2006-12-14 Shin Etsu Chem Co Ltd Permanent magnet member for interior magnet-type rotary electric machine and rotary electric machine
JP2007244026A (en) * 2006-03-06 2007-09-20 Daikin Ind Ltd Rotary electric machine

Also Published As

Publication number Publication date
JP6017885B2 (en) 2016-11-02

Similar Documents

Publication Publication Date Title
JP5286373B2 (en) Magnetic gear
DK2190103T3 (en) COREL FREE SHUTTER WITH SHIFT
US9923436B2 (en) Rotor for a rotary electric machine
US20150288233A1 (en) Rotor and motor using the same
JP6796449B2 (en) Synchronous reluctance type rotary electric machine
JP2011223742A (en) Permanent magnet type rotary machine
JP2017531997A (en) Multiphase motor having alternating permanent magnets and salient poles
KR101363199B1 (en) Motor with variable magnet flux
JP2009050099A (en) Rotor core, permanent magnet rotor, and permanent magnet synchronous electric rotating machine
JP2018148597A (en) Electric rotating machine
JP2011239650A (en) Rotator embedded with permanent magnet
JP2014045634A (en) Rotor and rotary electric machine including the same
JP2014155415A (en) Embedded magnet rotor and method of manufacturing embedded magnet rotor
JP2017055493A (en) Embedded magnet type rotor and manufacturing method of the same
US20150380993A1 (en) Method for operating variable magnetic flux motor
JP3772819B2 (en) Coaxial motor rotor structure
WO2013111301A1 (en) Rotor for synchronous electric motor, manufacturing method therefor, and synchronous electric motor
JP6017885B2 (en) Synchronous motor rotor
JP2015216786A (en) Permanent magnet embedded rotary electric machine
JP2006340556A (en) Permanent magnet member for interior magnet-type rotary electric machine and rotary electric machine
JP5793948B2 (en) Synchronous motor
JP5884464B2 (en) Rotating electric machine
JP2004304995A (en) Exciter, field unit, and motor using same
JP5740250B2 (en) Permanent magnet rotating electric machine
JP2008109800A (en) Rotor, reluctance motor, manufacturing method for rotor, and manufacturing method for reluctance motor

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20150528

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20160304

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20160315

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20160513

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20160927

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20160929

R150 Certificate of patent or registration of utility model

Ref document number: 6017885

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150