WO2017203907A1 - Rotary electric machine - Google Patents
Rotary electric machine Download PDFInfo
- Publication number
- WO2017203907A1 WO2017203907A1 PCT/JP2017/015840 JP2017015840W WO2017203907A1 WO 2017203907 A1 WO2017203907 A1 WO 2017203907A1 JP 2017015840 W JP2017015840 W JP 2017015840W WO 2017203907 A1 WO2017203907 A1 WO 2017203907A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- magnet
- interposed
- thermal expansion
- electric machine
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
Definitions
- the present invention relates to a rotating electrical machine, and more particularly to a rotor structure of a permanent magnet rotating electrical machine.
- Permanent magnet type rotating electrical machines have the property that the induced voltage increases as the number of rotations increases because the field is generated by the permanent magnets provided in the rotor.
- a rotating electrical machine is used as a drive motor for an electric vehicle, if the induced voltage generated by the rotating electrical machine exceeds the power supply voltage of the power storage device, the rotational speed cannot be increased further. For this reason, “field weakening control” in which a current for generating a magnetic field that cancels the magnetic field generated by the magnet in the stator coil is supplied to reduce the induced voltage is widely performed.
- field-weakening control has problems such as reduced efficiency because it uses a reactive current that does not directly contribute to output from a limited power source in addition to complicated control.
- Patent Document 1 in order to obtain the same effect as field-weakening control, when the rotational speed is high, the magnetic piece comes into contact with the inner surface of the bridge portion of the rotor, while when the rotational speed is low, the magnetic piece is the bridge portion.
- a non-contact magnetic piece contacting / separating mechanism is provided adjacent to the rotor circumferential end of a permanent magnet embedded in the rotor of the motor.
- a rotor for a rotating electrical machine includes a rotatable rotor core, a plurality of permanent magnets inserted into a plurality of magnet insertion holes formed in the rotor core, and a plurality of magnet insertion holes formed between adjacent magnet insertion holes of the rotor core.
- a magnetic flux short-circuit member disposed in the flux barrier and forming a magnetic flux path from one first pole of the adjacent permanent magnet to the other second pole.
- Patent Document 1 and Patent Document 2 require that a complicated mechanism be provided in the rotor in order to change the amount of magnetic flux, and there is concern about a decrease in manufacturability and long-term reliability.
- An object of the present invention is to provide a rotating electrical machine with improved efficiency during high-speed rotation.
- a rotating electrical machine is a rotating electrical machine including a rotor and a stator, and the rotor includes a plurality of magnets arranged along a rotation axis direction of the rotor. And an iron core that forms a housing part in which the magnet is housed, and a plurality of interposed members disposed in the housing part, and the thermal expansion coefficient of the plurality of interposed members is the thermal expansion coefficient of the iron core
- One of the plurality of interposition members is in contact with one of the plurality of magnets arranged along the rotation axis direction, and the other of the plurality of interposition members is the rotation shaft It contacts the other magnet among the plurality of magnets arranged along the direction.
- vertical to the rotating shaft of the rotor 30 of the rotary electric machine of a 2nd Example is shown.
- vertical to the rotating shaft of the rotor 30 of the rotary electric machine of a 3rd Example is shown. It is a vertical sectional view of the rotation axis of the rotor 30 of the fourth embodiment.
- an electric motor for driving an electric vehicle is used as an example of a rotating electric machine.
- FIG. 1 is a cross-sectional view of the rotating electrical machine 10 of the first embodiment cut along a plane parallel to the rotation axis.
- FIG. 2 is a cross-sectional view of the rotor of the rotating electrical machine 10 shown in FIG. 1 cut along an AA plane perpendicular to the rotation axis.
- the stator 20 includes a stator core 21 and a stator winding coil 23.
- the stator core 21 is provided with a stator slot 22 in the axial direction.
- the stator winding coil 23 is wound around the stator slot 22.
- the rotor 30 includes a rotor core 31 fixed to the shaft 36 and a permanent magnet 32 embedded in a magnet storage portion 33 formed on the rotor core.
- the housing 40 holds the stator 20.
- the bearing 41 supports the rotor 30 to be rotatable.
- the bracket 42 holds the bearing 41.
- the liquid cooling jacket 43 for cooling the stator 20 is provided in the housing 40 in FIG. 1, it is not always necessary to provide the liquid cooling jacket.
- FIG. 3 is a cross-sectional view of the rotor 30 of the rotating electrical machine 10 shown in FIG. 1 cut along a BB plane and a CC plane perpendicular to the rotation axis.
- the arrows in the figure indicate that the permanent magnet 32 is caused by the thermal expansion of the interposed members (the first interposed member 34 and the second interposed member 35) filled in the magnet housing portion 33 when the temperature of the rotor 30 rises. The direction of movement is shown.
- the magnet housing portion 33 provided in the rotor core 31 is formed larger than the permanent magnet 32, and in particular, flux barriers for short-circuiting the magnetic flux are provided at both ends in the circumferential direction (magnet width direction).
- the flux barrier in the magnet housing portion 33 is filled with the first interposed member 34 and the second interposed member 35 in order to hold the permanent magnet.
- the first intervention member 34 is provided so that the coefficient of thermal expansion of the first intervention member 34 is greater than the coefficient of thermal expansion of the second intervention member 34. Further, the positions where the first interposed member 34 and the second interposed member 35 are filled in the BB cross section and the CC cross section are switched.
- the movement directions of the permanent magnet 32 after the temperature rise are opposite to each other, and the relative position of the permanent magnet 32 is shifted along the rotation axis direction.
- the same effect as when the rotor 30 is skewed is obtained, and the induced voltage during high-speed rotation can be reduced.
- FIG. 4 to FIG. 6 show the results of obtaining the effect of reducing the induced voltage, torque ripple, and cogging torque by applying this embodiment by magnetic field analysis.
- FIG. 4 shows the induced voltage with respect to the electrical angle of the rotating electrical machine 10.
- FIG. 5 shows torque ripple with respect to the electrical angle of the rotating electrical machine 10.
- FIG. 6 shows the cogging torque with respect to the electrical angle of the rotating electrical machine 10.
- the solid line is the case where the present embodiment is applied.
- stator 20 of the first embodiment is concentrated winding, it may be a distributed winding stator. As described above, the effect of the present embodiment can be obtained regardless of the concentrated winding and distributed winding of the stator.
- FIG. 7 shows a cross-sectional view perpendicular to the rotation axis of the rotor 30 of the rotating electric machine according to the second embodiment of the present invention.
- the first interposed member 34 is filled on the outer diameter side of the permanent magnet 32
- the second layer member 35 is filled on the inner diameter side of the permanent magnet 32.
- the thermal expansion coefficient of the first interposed member 34 is larger than the thermal expansion coefficient of the second interposed member 35, and the permanent magnet 32 can be moved to the inner diameter side due to a temperature rise during high-speed rotation.
- FIG. 8 is a cross-sectional view perpendicular to the rotation axis of the rotor 30 of the rotating electrical machine of the third embodiment.
- the second interposed member 35 of the first embodiment is omitted.
- the permanent magnet 32 is moved in the direction of the arrow in the figure by the thermal expansion of the first interposed member 34 when the temperature rises. Moving. As a result, the effect of reducing the induced voltage during high-speed rotation can be obtained as in the first embodiment.
- FIG. 9 is a vertical sectional view of the rotation axis of the rotor 30 of the fourth embodiment.
- Example 1 to Example 3 the shape of the magnet storage portion 33 provided in the rotor core 31 is parallel, but may be V-shaped as shown in FIG.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The purpose of the invention is to provide a rotary electric machine having an improved efficiency during high-speed rotation. This rotary electric machine is provided with a rotor and a stator, wherein the rotor is provided with a plurality of magnets arranged side-by-side along the rotating axis direction of the rotor, an iron core that forms an accommodating section for accommodating the magnets, and a plurality of interposition members disposed in the accommodating section. The coefficients of thermal expansion of the plurality of interposition members are greater than the coefficient of thermal expansion of the iron core, and one side of the plurality of interposition members is in contact with the magnets on one side among the plurality of magnets arranged along the rotating axis direction, and the other side of the plurality of interposition members is in contact with the magnets on the other side among the plurality of magnets arranged along the rotating axis direction.
Description
本発明は回転電機に係り、特に永久磁石式回転電機の回転子の構造に関する。
The present invention relates to a rotating electrical machine, and more particularly to a rotor structure of a permanent magnet rotating electrical machine.
永久磁石式の回転電機は、回転子に備えた永久磁石により界磁しているため、回転数の増加に伴い誘起電圧が増加する性質を有する。このような回転電機を電動車両の駆動用モータとして利用する場合、回転電機が発生する誘起電圧が蓄電装置の電源電圧を超えると、それ以上回転数を上げることができない。このため、ステータコイルに磁石が発生する磁界を打ち消す磁界を発生するための電流を流し、誘起電圧を低減する「弱め界磁制御」が広く行われている。
Permanent magnet type rotating electrical machines have the property that the induced voltage increases as the number of rotations increases because the field is generated by the permanent magnets provided in the rotor. When such a rotating electrical machine is used as a drive motor for an electric vehicle, if the induced voltage generated by the rotating electrical machine exceeds the power supply voltage of the power storage device, the rotational speed cannot be increased further. For this reason, “field weakening control” in which a current for generating a magnetic field that cancels the magnetic field generated by the magnet in the stator coil is supplied to reduce the induced voltage is widely performed.
しかしながら弱め界磁制御は、制御が複雑になることに加え、限られた電源から出力に直接寄与しない無効電流を使用するため、効率が低下するなどの課題を有する。
However, field-weakening control has problems such as reduced efficiency because it uses a reactive current that does not directly contribute to output from a limited power source in addition to complicated control.
そこで、弱め界磁制御を実行することなく永久磁石式回転電機の回転数を上げるための手段が複数考案されており、例えば特許文献１及び２などに開示されている。
Therefore, a plurality of means for increasing the rotation speed of the permanent magnet type rotating electric machine without executing the field weakening control have been devised, such as disclosed in Patent Documents 1 and 2, for example.
特許文献１では、弱め界磁制御と同等の効果を得るために、回転数が高いときにロータのブリッジ部の内面に磁性体片が接触する一方で回転数が低いときに磁性体片がブリッジ部と非接触になる磁性体片接離機構を、モータのロータの内部に埋め込まれた永久磁石のロータ周方向端部に隣接して設けている。
In Patent Document 1, in order to obtain the same effect as field-weakening control, when the rotational speed is high, the magnetic piece comes into contact with the inner surface of the bridge portion of the rotor, while when the rotational speed is low, the magnetic piece is the bridge portion. A non-contact magnetic piece contacting / separating mechanism is provided adjacent to the rotor circumferential end of a permanent magnet embedded in the rotor of the motor.
また特許文献２では、回転電機用ロータは、回転可能なロータコアとロータコアにあけた複数の磁石挿入孔内にそれぞれ挿入された複数の永久磁石とロータコアの隣接する磁石挿入孔間にあけた複数のフラックスバリヤ内にそれぞれ配置され、隣接する永久磁石の一方の第１極から他方の第２極への磁束の通路を形成する磁束短絡部材とを含み、磁束短絡部材は、少なくとも一部が超磁歪材料から成り、ロータが高速で回転するとき、低速で回転するときよりも超磁歪材料の透磁率を向上させ、第１極から第２極への短絡磁束を増加させることで高速回転時の磁束量を低減している。
In Patent Document 2, a rotor for a rotating electrical machine includes a rotatable rotor core, a plurality of permanent magnets inserted into a plurality of magnet insertion holes formed in the rotor core, and a plurality of magnet insertion holes formed between adjacent magnet insertion holes of the rotor core. A magnetic flux short-circuit member disposed in the flux barrier and forming a magnetic flux path from one first pole of the adjacent permanent magnet to the other second pole. When the rotor rotates at high speed, the magnetic permeability of the giant magnetostrictive material is improved compared to when the rotor rotates at low speed, and the short-circuit magnetic flux from the first pole to the second pole is increased to increase the magnetic flux at high speed rotation. The amount is reduced.
しかしながら、特許文献１および特許文献２ともに、磁束量を変化させるために複雑な機構を回転子内に設ける必要があり、製造性の低下や長期信頼性に懸念がある。
However, both Patent Document 1 and Patent Document 2 require that a complicated mechanism be provided in the rotor in order to change the amount of magnetic flux, and there is concern about a decrease in manufacturability and long-term reliability.
本発明の課題は、高速回転時の効率を向上させた回転電機を提供することである。
An object of the present invention is to provide a rotating electrical machine with improved efficiency during high-speed rotation.
上記課題を解決するために、本発明に係る回転電機は、回転子と固定子を備える回転電機であって、前記回転子は、当該回転子の回転軸方向に沿って並べられる複数の磁石と、前記磁石が収納される収納部を形成する鉄心と、前記収納部に配置される複数の介装部材と、を備え、前記複数の介装部材の熱膨張率は、前記鉄心の熱膨張率よりも大きく、前記複数の介装部材の一方は、前記回転軸方向に沿って並べられた前記複数の磁石のうち一方の磁石に接触し、前記複数の介装部材の他方は、前記回転軸方向に沿って並べられた前記複数の磁石のうち他方の磁石に接触する。
In order to solve the above-mentioned problem, a rotating electrical machine according to the present invention is a rotating electrical machine including a rotor and a stator, and the rotor includes a plurality of magnets arranged along a rotation axis direction of the rotor. And an iron core that forms a housing part in which the magnet is housed, and a plurality of interposed members disposed in the housing part, and the thermal expansion coefficient of the plurality of interposed members is the thermal expansion coefficient of the iron core One of the plurality of interposition members is in contact with one of the plurality of magnets arranged along the rotation axis direction, and the other of the plurality of interposition members is the rotation shaft It contacts the other magnet among the plurality of magnets arranged along the direction.
本発明により、簡単な構造で高速回転時の効率を向上させた回転電機を提供することができる。
According to the present invention, it is possible to provide a rotating electrical machine having a simple structure and improved efficiency at high speed rotation.
以下図面を用いて本発明の実施例を説明する。
Embodiments of the present invention will be described below with reference to the drawings.
なお、以下の説明では、回転電機の一例として、電動車両の駆動用電動機を用いる。
In the following description, an electric motor for driving an electric vehicle is used as an example of a rotating electric machine.
図１は、第１の実施例の回転電機１０を回転軸平行平面で切った断面図である。図２は、図１に示す回転電機１０の回転子を、回転軸に垂直なＡ-Ａ面で切った断面図である。
FIG. 1 is a cross-sectional view of the rotating electrical machine 10 of the first embodiment cut along a plane parallel to the rotation axis. FIG. 2 is a cross-sectional view of the rotor of the rotating electrical machine 10 shown in FIG. 1 cut along an AA plane perpendicular to the rotation axis.
固定子２０は、固定子鉄心２１と、固定子巻線コイル２３と、を備える。固定子鉄心２１は、軸方向に固定子スロット２２を設ける。固定子巻線コイル２３は、固定子スロット２２に巻き回される。
The stator 20 includes a stator core 21 and a stator winding coil 23. The stator core 21 is provided with a stator slot 22 in the axial direction. The stator winding coil 23 is wound around the stator slot 22.
回転子３０は、シャフト３６に固定された回転子鉄心３１と、回転子鉄心に形成した磁石収納部３３に埋め込んだ永久磁石３２とから構成される。
The rotor 30 includes a rotor core 31 fixed to the shaft 36 and a permanent magnet 32 embedded in a magnet storage portion 33 formed on the rotor core.
ハウジング４０は、固定子２０を保持する。軸受４１は、回転子３０を回転可能に支持する。ブラケット４２は、軸受４１を保持する。また、図１にはハウジング４０内に固定子２０を冷却するための液冷ジャケット４３を備えているが、必ずしも液冷ジャケットを備える必要はない。
The housing 40 holds the stator 20. The bearing 41 supports the rotor 30 to be rotatable. The bracket 42 holds the bearing 41. Moreover, although the liquid cooling jacket 43 for cooling the stator 20 is provided in the housing 40 in FIG. 1, it is not always necessary to provide the liquid cooling jacket.
図３は、図１に示す回転電機１０の回転子３０を、回転軸に垂直なＢ-Ｂ面およびＣ-Ｃ面で切った断面図である。
FIG. 3 is a cross-sectional view of the rotor 30 of the rotating electrical machine 10 shown in FIG. 1 cut along a BB plane and a CC plane perpendicular to the rotation axis.
図中の矢印は、回転子３０が温度上昇した際に、磁石収納部３３内に充填した介装部材（第１介装部材３４や第２介装部材３５）の熱膨張により永久磁石３２が移動する方向を示している。
The arrows in the figure indicate that the permanent magnet 32 is caused by the thermal expansion of the interposed members (the first interposed member 34 and the second interposed member 35) filled in the magnet housing portion 33 when the temperature of the rotor 30 rises. The direction of movement is shown.
回転子鉄心３１に設けた磁石収納部３３は、永久磁石３２よりも大きく形成されており、特に周方向（磁石幅方向）両端には磁束を短絡させるためのフラックスバリアが設けられる。磁石収納部３３内のフラックスバリアには、永久磁石を保持するために第１介装部材３４および第２介装部材３５を充填している。
The magnet housing portion 33 provided in the rotor core 31 is formed larger than the permanent magnet 32, and in particular, flux barriers for short-circuiting the magnetic flux are provided at both ends in the circumferential direction (magnet width direction). The flux barrier in the magnet housing portion 33 is filled with the first interposed member 34 and the second interposed member 35 in order to hold the permanent magnet.
第１介装部材３４は、この第１介装部材３４の熱膨張率が第２介装部材の熱膨張率よりも大きくなるように設けられている。さらに、Ｂ-Ｂ断面およびＣ-Ｃ断面において第１介装部材３４と第２介装部材３５を充填する位置を入れ替える。
The first intervention member 34 is provided so that the coefficient of thermal expansion of the first intervention member 34 is greater than the coefficient of thermal expansion of the second intervention member 34. Further, the positions where the first interposed member 34 and the second interposed member 35 are filled in the BB cross section and the CC cross section are switched.
これにより温度上昇後の永久磁石３２の移動方向が互いに逆向きとなり、回転軸方向に沿って、永久磁石３２の相対位置がずれることになる。回転子３０をスキューさせたときと同様の効果が得られ、高速回転時の誘起電圧を低減できる。
Thus, the movement directions of the permanent magnet 32 after the temperature rise are opposite to each other, and the relative position of the permanent magnet 32 is shifted along the rotation axis direction. The same effect as when the rotor 30 is skewed is obtained, and the induced voltage during high-speed rotation can be reduced.
図４ないし図６に、本実施形態を適用することによる誘起電圧、トルクリップル、コギングトルクの低減効果を磁界解析により求めた結果を示す。図４は、回転電機１０の電気角に対する誘起電圧を示す。図５は、回転電機１０の電気角に対するトルクリップルを示す。図６は、回転電機１０の電気角に対するコギングトルクを示す。いずれの図面も実線が本実施形態を適用した場合である。本実施形態を適用することにより、誘起電圧は約10％、トルクリップルは約50%、コギングトルクは約55％低減できることが確認できた。
FIG. 4 to FIG. 6 show the results of obtaining the effect of reducing the induced voltage, torque ripple, and cogging torque by applying this embodiment by magnetic field analysis. FIG. 4 shows the induced voltage with respect to the electrical angle of the rotating electrical machine 10. FIG. 5 shows torque ripple with respect to the electrical angle of the rotating electrical machine 10. FIG. 6 shows the cogging torque with respect to the electrical angle of the rotating electrical machine 10. In all the drawings, the solid line is the case where the present embodiment is applied. By applying this embodiment, it was confirmed that the induced voltage can be reduced by about 10%, the torque ripple can be reduced by about 50%, and the cogging torque can be reduced by about 55%.
なお、第１の実施例の固定子２０が集中巻きであるが、分布巻きの固定子であってもよい。このように固定子の集中巻き、分布巻きによらずに、本実施形態による効果を得ることができる。
Although the stator 20 of the first embodiment is concentrated winding, it may be a distributed winding stator. As described above, the effect of the present embodiment can be obtained regardless of the concentrated winding and distributed winding of the stator.
図７に、本発明の第２の実施例の回転電機の回転子３０の回転軸に垂直な断面図を示す。第２の実施例においては、永久磁石３２の外径側に第１介装部材３４を充填し、永久磁石３２の内径側に第２階層部材３５を充填している。第１介装部材３４の熱膨張率は第２介装部材３５の熱膨張率よりも大きく、高速回転時には温度上昇により永久磁石３２を内径側に移動させることができる。これにより、永久磁石３２と固定子巻線コイル２３との距離が広がり、磁束量を低減することができるため、高速回転時の誘起電圧を低減する効果が得られる。
FIG. 7 shows a cross-sectional view perpendicular to the rotation axis of the rotor 30 of the rotating electric machine according to the second embodiment of the present invention. In the second embodiment, the first interposed member 34 is filled on the outer diameter side of the permanent magnet 32, and the second layer member 35 is filled on the inner diameter side of the permanent magnet 32. The thermal expansion coefficient of the first interposed member 34 is larger than the thermal expansion coefficient of the second interposed member 35, and the permanent magnet 32 can be moved to the inner diameter side due to a temperature rise during high-speed rotation. Thereby, since the distance between the permanent magnet 32 and the stator winding coil 23 can be increased and the amount of magnetic flux can be reduced, the effect of reducing the induced voltage during high-speed rotation can be obtained.
図８に、第３の実施例の回転電機の回転子３０の回転軸に垂直な断面図を示す。本実施例は、第１の実施例の第２介装部材３５を省いたものである。このとき、第１介装部材３４として回転子鉄心３１の熱膨張率よりも大きい材料を選定することにより、温度上昇時に第１介装部材３４の熱膨張により永久磁石３２が図中矢印方向に移動する。これにより、第１の実施例と同様に高速回転時の誘起電圧低減効果を得ることができる。
FIG. 8 is a cross-sectional view perpendicular to the rotation axis of the rotor 30 of the rotating electrical machine of the third embodiment. In this embodiment, the second interposed member 35 of the first embodiment is omitted. At this time, by selecting a material larger than the coefficient of thermal expansion of the rotor core 31 as the first interposed member 34, the permanent magnet 32 is moved in the direction of the arrow in the figure by the thermal expansion of the first interposed member 34 when the temperature rises. Moving. As a result, the effect of reducing the induced voltage during high-speed rotation can be obtained as in the first embodiment.
図９は、第４の実施例の回転子３０の回転軸の垂直断面図である。
FIG. 9 is a vertical sectional view of the rotation axis of the rotor 30 of the fourth embodiment.
実施例１から実施例３までは、回転子鉄心３１に設けた磁石収納部３３の形状が平行であったが、図９に示すように、Ｖ字形状であっても良い。
In Example 1 to Example 3, the shape of the magnet storage portion 33 provided in the rotor core 31 is parallel, but may be V-shaped as shown in FIG.
１０…回転電機、２０…固定子、２１…固定子鉄心、２２…固定子スロット、２３…固定子巻線コイル、３０…回転子、３１…回転子鉄心、３２…永久磁石、３３…磁石収納部、３４…第１介装部材、３５…第２介装部材、３６…シャフト、４０…ハウジング、４１…軸受、４２…ブラケット、４３…液冷ジャケット
DESCRIPTION OF SYMBOLS 10 ... Rotary electric machine, 20 ... Stator, 21 ... Stator iron core, 22 ... Stator slot, 23 ... Stator winding coil, 30 ... Rotor, 31 ... Rotor iron core, 32 ... Permanent magnet, 33 ... Magnet accommodation 34, first intervention member, 35 ... second intervention member, 36 ... shaft, 40 ... housing, 41 ... bearing, 42 ... bracket, 43 ... liquid cooling jacket
Claims (4)
- 回転子と固定子を備える回転電機であって、
前記回転子は、当該回転子の回転軸方向に沿って並べられる複数の磁石と、前記磁石が収納される収納部を形成する鉄心と、前記収納部に配置される複数の介装部材と、を備え、
前記複数の介装部材の熱膨張率は、前記鉄心の熱膨張率よりも大きく、
前記複数の介装部材の一方は、前記回転軸方向に沿って並べられた前記複数の磁石のうち一方の磁石に接触し、
前記複数の介装部材の他方は、前記回転軸方向に沿って並べられた前記複数の磁石のうち他方の磁石に接触する回転電機。 A rotating electric machine including a rotor and a stator,
The rotor includes a plurality of magnets arranged along the rotation axis direction of the rotor, an iron core that forms a storage portion in which the magnet is stored, and a plurality of interposed members that are disposed in the storage portion, With
The thermal expansion coefficient of the plurality of interposed members is greater than the thermal expansion coefficient of the iron core,
One of the plurality of interposed members is in contact with one of the plurality of magnets arranged along the rotation axis direction,
The other of the plurality of interposed members is a rotating electrical machine that contacts the other magnet among the plurality of magnets arranged along the rotation axis direction. - 請求項１に記載の回転電機であって、
前記複数の介装部材の一方は、前記一方の磁石の周方向の一方側に配置された第１介装部材と、前記一方の磁石の周方向の他方側に配置された第２介装部材と、により構成され、
前記複数の介装部材の他方は、前記他方の磁石の周方向の一方側に配置された第３介装部材と、前記他方の磁石の周方向の他方側に配置された第４介装部材と、により構成され、
前記第１介装部材の熱膨張率は，前記第２介装部材の熱膨張率よりも大きく、
前記第４介装部材の熱膨張率は，前記第３介装部材の熱膨張率よりも大きい回転電機。 The rotating electrical machine according to claim 1,
One of the plurality of intervention members is a first intervention member disposed on one side in the circumferential direction of the one magnet, and a second intervention member disposed on the other side in the circumferential direction of the one magnet. And
The other of the plurality of interposed members is a third interposed member disposed on one side in the circumferential direction of the other magnet, and a fourth interposed member disposed on the other side in the circumferential direction of the other magnet. And
The coefficient of thermal expansion of the first interposed member is greater than the coefficient of thermal expansion of the second interposed member,
The rotary electric machine has a coefficient of thermal expansion greater than that of the third interposed member. - 請求項１に記載の回転電機であって、
前記収納部は複数形成され、当該複数の収納部によりV字形状を為す回転電機。 The rotating electrical machine according to claim 1,
A rotating electrical machine in which a plurality of the storage portions are formed and V-shaped by the plurality of storage portions. - 回転子と固定子を備える回転電機であって、
前記回転子は、磁石と、前記磁石が収納される収納部を形成する鉄心と、前記収納部に配置されかつ径方向であって前記磁石よりも外周側に配置される第１介装部材と、前記収納部に配置されかつ径方向であって前記磁石よりも内周側に配置される第２介装部材と、を備え、
前記第１介装部材の熱膨張率は，前記第２介装部材の熱膨張率よりも大きい回転電機。 A rotating electric machine including a rotor and a stator,
The rotor includes a magnet, an iron core that forms a storage portion in which the magnet is stored, and a first interposed member that is disposed in the storage portion and that is disposed in the radial direction and on the outer peripheral side of the magnet. A second interposed member that is disposed in the storage portion and is disposed in a radial direction and on an inner peripheral side with respect to the magnet,
The rotary electric machine has a coefficient of thermal expansion greater than that of the second interposed member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201780026233.0A CN109155552B (en) | 2016-05-24 | 2017-04-20 | Rotor of rotating electric machine and rotating electric machine using the same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016102942A JP6685175B2 (en) | 2016-05-24 | 2016-05-24 | Rotating electric machine |
| JP2016-102942 | 2016-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2017203907A1 true WO2017203907A1 (en) | 2017-11-30 |
Family
ID=60411792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2017/015840 WO2017203907A1 (en) | 2016-05-24 | 2017-04-20 | Rotary electric machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6685175B2 (en) |
| CN (1) | CN109155552B (en) |
| WO (1) | WO2017203907A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365144B (en) * | 2019-07-18 | 2020-10-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor, motor and compressor |
| CN110380543B (en) * | 2019-08-07 | 2021-09-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor subassembly, motor, compressor |
| CN111509886B (en) * | 2020-04-15 | 2021-09-14 | 重庆三峡学院 | Multifunctional temperature control heating system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004343842A (en) * | 2003-05-13 | 2004-12-02 | Denso Corp | Rotor for electric rotating machine |
| JP2012016237A (en) * | 2010-07-05 | 2012-01-19 | Nissan Motor Co Ltd | Rotary electric machine and manufacturing method of the same |
| JP2013258850A (en) * | 2012-06-13 | 2013-12-26 | Denso Corp | Rotor of rotary electric machine |
| JP2015035888A (en) * | 2013-08-08 | 2015-02-19 | 日産自動車株式会社 | Rotor for rotary electric machine and manufacturing method therefor |
| JP2015104273A (en) * | 2013-11-27 | 2015-06-04 | 三菱電機株式会社 | Rotor with embedded magnets |
| JP2015149791A (en) * | 2014-02-04 | 2015-08-20 | トヨタ自動車株式会社 | Rotor of dynamo-electric machine |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1140036C (en) * | 1997-07-22 | 2004-02-25 | 松下电器产业株式会社 | Motor with rotor containing inner permanent magnet |
| JP4734957B2 (en) * | 2005-02-24 | 2011-07-27 | トヨタ自動車株式会社 | Rotor |
| JP2009232525A (en) * | 2008-03-21 | 2009-10-08 | Toyota Motor Corp | Rotor for ipm motor and ipm motor |
| US9154005B2 (en) * | 2010-06-14 | 2015-10-06 | Toyota Jidosha Kabushiki Kaisha | Rotor core for rotating electrical machine, and manufacturing method thereof |
| CN101917076B (en) * | 2010-08-26 | 2012-12-12 | 苏州和鑫电气股份有限公司 | Permanent magnet drive motor for solar tracking system |
| JP5786804B2 (en) * | 2012-06-13 | 2015-09-30 | 株式会社デンソー | Rotor for rotating electrical machine and method for manufacturing the same |
| JP6075300B2 (en) * | 2014-01-17 | 2017-02-08 | トヨタ自動車株式会社 | Motor rotor |
| JP2016067140A (en) * | 2014-09-25 | 2016-04-28 | トヨタ自動車株式会社 | Rotor and method of manufacturing rotor |
-
2016
- 2016-05-24 JP JP2016102942A patent/JP6685175B2/en active Active
-
2017
- 2017-04-20 WO PCT/JP2017/015840 patent/WO2017203907A1/en active Application Filing
- 2017-04-20 CN CN201780026233.0A patent/CN109155552B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004343842A (en) * | 2003-05-13 | 2004-12-02 | Denso Corp | Rotor for electric rotating machine |
| JP2012016237A (en) * | 2010-07-05 | 2012-01-19 | Nissan Motor Co Ltd | Rotary electric machine and manufacturing method of the same |
| JP2013258850A (en) * | 2012-06-13 | 2013-12-26 | Denso Corp | Rotor of rotary electric machine |
| JP2015035888A (en) * | 2013-08-08 | 2015-02-19 | 日産自動車株式会社 | Rotor for rotary electric machine and manufacturing method therefor |
| JP2015104273A (en) * | 2013-11-27 | 2015-06-04 | 三菱電機株式会社 | Rotor with embedded magnets |
| JP2015149791A (en) * | 2014-02-04 | 2015-08-20 | トヨタ自動車株式会社 | Rotor of dynamo-electric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109155552A (en) | 2019-01-04 |
| CN109155552B (en) | 2020-07-21 |
| JP6685175B2 (en) | 2020-04-22 |
| JP2017212780A (en) | 2017-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3205336U (en) | Single-phase motor and electric device having the same | |
| JP5141030B2 (en) | Rotating electric machine | |
| JP2016214070A (en) | Single-phase motor and electric apparatus having the same | |
| WO2014034344A1 (en) | Rotating electric machine | |
| US20130187504A1 (en) | Dynamo-electric machine | |
| JP5208088B2 (en) | Permanent magnet embedded motor and blower | |
| US20150372578A1 (en) | Motor | |
| US9590457B2 (en) | Stator of a rotary electric machine | |
| JP6239190B2 (en) | Rotating electric machine | |
| WO2017203907A1 (en) | Rotary electric machine | |
| WO2016060232A1 (en) | Double stator-type rotary machine | |
| JP5248048B2 (en) | Rotating electric machine rotor and rotating electric machine | |
| US20220060070A1 (en) | Rotating electric machine | |
| JP2008236866A (en) | Rotor of permanent magnet embedded-type rotating electric machine, and permanent magnet embedded-type rotating electric machine | |
| JP5195450B2 (en) | Slotless motor | |
| KR200462692Y1 (en) | Spoke type motor | |
| JP5673438B2 (en) | Rotor structure of rotating electrical machine | |
| JP2016220434A (en) | Stator of rotary electric machine | |
| JP6201405B2 (en) | Rotating electric machine | |
| JP5940354B2 (en) | Electric power steering system motor rotor and electric power steering system motor | |
| JP2012044789A (en) | Rotary electric machine and method for manufacturing the same | |
| WO2014188505A1 (en) | Rotating electric machine | |
| JP2012060709A (en) | Permanent magnet motor | |
| JP2015231253A (en) | Magnet and dynamo-electric machine including the same | |
| KR101221251B1 (en) | Rotor of interior permanent magnet motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17802505 Country of ref document: EP Kind code of ref document: A1 |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 17802505 Country of ref document: EP Kind code of ref document: A1 |