JP2021052568A

JP2021052568A - Electric motor

Info

Publication number: JP2021052568A
Application number: JP2019175988A
Authority: JP
Inventors: 貴晃小野; Takaaki Ono; 裕介入野; Yusuke Irino
Original assignee: Daikin Industries Ltd
Current assignee: Daikin Industries Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2021-04-01

Abstract

To design an appropriate insulation performance of insulating material.SOLUTION: A plurality of insulating members (70) is provided on an inner wall of a plurality of slots (53), respectively, to electrically insulate a stator core (50) and a plurality of windings (60). The plurality of windings (60) includes at least one first winding (61) included in a first winding portion to which a voltage is applied and at least one second winding (62) included in a second winding portion to which a voltage different from that applied to the first winding (61) is applied. The plurality of insulating members (70) differ from each other in the insulating performance of a portion electrically insulating the stator core (50) and the first winding (61) and in the insulating performance of a portion electrically insulating the stator core (50) and the second winding (62).SELECTED DRAWING: Figure 3

Description

本開示は、電動機に関する。 The present disclosure relates to an electric motor.

特許文献１には、固定子に配設された複数のモータ巻線と、モータ巻線と独立して固定子に配設された複数の磁気支持巻線とを備える電動機が開示されている。 Patent Document 1 discloses an electric motor including a plurality of motor windings arranged on a stator and a plurality of magnetic support windings arranged on a stator independently of the motor windings.

特開２００８−１７８１６５号公報Japanese Unexamined Patent Publication No. 2008-178165

特許文献１のような電動機では、２つの巻線に要求される絶縁性能が互いに異なる。しかしながら、従来では、２つの巻線の絶縁性能をどのように設計するのか論じられていない。 In an electric motor as in Patent Document 1, the insulation performance required for the two windings is different from each other. However, conventionally, how to design the insulation performance of the two windings has not been discussed.

本開示の第１の態様は、電動機に関し、この電動機は、回転子（30）と、固定子（40）とを備える。前記固定子（40）は、環状に形成されたバックヨーク（51）と、該バックヨーク（51）の内周に設けられる複数のティース（52）とを有する固定子コア（50）と、前記複数のティース（52）の間にそれぞれ形成される複数のスロット（53）を通過するように配線される複数の巻線（60）と、前記複数のスロット（53）の内壁部にそれぞれ設けられ、前記固定子コア（50）と前記複数の巻線（60）とを電気的に絶縁する複数の絶縁部材（70）とを有し、前記複数の巻線（60）は、電圧が印加される第１巻線部に含まれる少なくとも１つの第１巻線（61）と、該第１巻線部に印加される電圧とは異なる電圧が印加される第２巻線部に含まれる少なくとも１つの第２巻線（62）とを含み、前記複数の絶縁部材（70）は、前記固定子コア（50）と前記第１巻線（61）とを電気的に絶縁する部分の絶縁性能と前記固定子コア（50）と前記第２巻線（62）とを電気的に絶縁する部分の絶縁性能とが互いに異なる。 A first aspect of the present disclosure relates to an electric motor, which comprises a rotor (30) and a stator (40). The stator (40) includes a stator core (50) having a back yoke (51) formed in an annular shape and a plurality of teeth (52) provided on the inner circumference of the back yoke (51). A plurality of windings (60) wired so as to pass through a plurality of slots (53) formed between the plurality of teeth (52), and provided on the inner wall portion of the plurality of slots (53), respectively. It has a plurality of insulating members (70) that electrically insulate the stator core (50) and the plurality of windings (60), and a voltage is applied to the plurality of windings (60). At least one first winding (61) included in the first winding portion and at least one included in the second winding portion to which a voltage different from the voltage applied to the first winding portion is applied. The plurality of insulating members (70), including one second winding (62), have an insulating performance of a portion that electrically insulates the stator core (50) and the first winding (61). The insulation performance of the portion that electrically insulates the stator core (50) and the second winding (62) is different from each other.

第１の態様では、固定子コア（50）と第１巻線（61）とを電気的に絶縁する部分の絶縁性能と固定子コア（50）と第２巻線（62）とを電気的に絶縁する部分の絶縁性能とを互いに異ならせることにより、これらの絶縁性能が互いに同一である場合よりも、固定子コア（50）と第１巻線（61）とを電気的に絶縁する部分および固定子コア（50）と第２巻線（62）とを電気的に絶縁する部分のうち一方において絶縁性能が過剰となることを抑制することができる。これにより、絶縁部材（70）の絶縁性能を適切に設計することができる。 In the first aspect, the insulation performance of the portion that electrically insulates the stator core (50) and the first winding (61) and the stator core (50) and the second winding (62) are electrically insulated. By making the insulation performance of the part that insulates different from each other, the part that electrically insulates the stator core (50) and the first winding (61) than when these insulation performances are the same as each other. It is possible to prevent the insulation performance from becoming excessive in one of the portions that electrically insulate the stator core (50) and the second winding (62). Thereby, the insulation performance of the insulating member (70) can be appropriately designed.

本開示の第２の態様は、第１の態様において、前記複数のスロット（53）は、前記第１巻線（61）および前記第２巻線（62）が通過する共通スロット（54）を含み、前記複数の絶縁部材（70）のうち前記共通スロット（54）に設けられる絶縁部材（70）は、前記固定子コア（50）と前記第１巻線（61）とを電気的に絶縁する第１部分（70a）と、前記固定子コア（50）と前記第２巻線（62）とを電気的に絶縁する第２部分（70b）とを有し、前記第１部分（70a）の絶縁性能は、前記第２部分（70b）の絶縁性能と異なることを特徴とする電動機である。 In a second aspect of the present disclosure, in the first aspect, the plurality of slots (53) pass through a common slot (54) through which the first winding (61) and the second winding (62) pass. Among the plurality of insulating members (70), the insulating member (70) provided in the common slot (54) electrically insulates the stator core (50) and the first winding (61). It has a first portion (70a) and a second portion (70b) that electrically insulates the stator core (50) and the second winding (62), and the first portion (70a). The insulation performance of the electric motor is different from the insulation performance of the second portion (70b).

第２の態様では、第１部分（70a）の絶縁性能と第２部分（70b）の絶縁性能とを互いに異ならせることにより、これらの絶縁性能が互いに同一である場合よりも、第１部分（70a）および第２部分（70b）のうち一方において絶縁性能が過剰となることを抑制することができる。これにより、共通スロット（54）に設けられる絶縁部材（70）の絶縁性能を適切に設計することができる。 In the second aspect, the insulation performance of the first portion (70a) and the insulation performance of the second portion (70b) are made different from each other so that the insulation performance of the first portion (70a) is different from that of the first portion (70a). It is possible to prevent the insulation performance from becoming excessive in one of the 70a) and the second portion (70b). Thereby, the insulation performance of the insulating member (70) provided in the common slot (54) can be appropriately designed.

本開示の第３の態様は、第２の態様において、前記共通スロット（54）には、前記第１巻線（61）と前記第２巻線（62）とを電気的に絶縁する線間絶縁部材（80）が設けられ、前記共通スロット（54）に設けられる線間絶縁部材（80）の絶縁性能は、前記複数の絶縁部材（70）のうち該共通スロット（54）に設けられる絶縁部材（70）の絶縁性能と異なることを特徴とする電動機である。 A third aspect of the present disclosure is, in the second aspect, between the wires that electrically insulate the first winding (61) and the second winding (62) in the common slot (54). The insulating member (80) is provided, and the insulation performance of the line insulating member (80) provided in the common slot (54) is the insulation provided in the common slot (54) among the plurality of insulating members (70). It is an electric motor characterized by being different from the insulation performance of the member (70).

第３の態様では、線間絶縁部材（80）の絶縁性能と絶縁部材（70）の絶縁性能とを互いに異ならせることにより、これらの絶縁性能が互いに同一である場合よりも、線間絶縁部材（80）および絶縁部材（70）のうち一方において絶縁性能が過剰となることを抑制することができる。これにより、線間絶縁部材（80）の絶縁性能と絶縁部材（70）の絶縁性能とを適切に設計することができる。 In the third aspect, by making the insulation performance of the line insulation member (80) and the insulation performance of the insulation member (70) different from each other, the line insulation member is more than the case where these insulation performances are the same as each other. It is possible to prevent the insulation performance from becoming excessive in one of (80) and the insulating member (70). Thereby, the insulation performance of the line insulation member (80) and the insulation performance of the insulation member (70) can be appropriately designed.

本開示の第４の態様は、第３の態様において、前記共通スロット（54）を通過する第１巻線（61）の数は、２つ以上であり、前記共通スロット（54）を通過する２つ以上の第１巻線（61）のうち少なくとも２つに印加される電圧は、それぞれ異なる位相を有し、前記共通スロット（54）には、該共通スロット（54）を通過する２つ以上の第１巻線（61）の間を電気的に絶縁する少なくとも１つの第１相間絶縁部材（81）が設けられ、前記第１相間絶縁部材（81）の絶縁性能は、前記線間絶縁部材（80）の絶縁性能と異なることを特徴とする電動機である。 In the fourth aspect of the present disclosure, in the third aspect, the number of the first windings (61) passing through the common slot (54) is two or more, and the first winding (61) passes through the common slot (54). The voltages applied to at least two of the two or more first windings (61) have different phases, and the common slot (54) has two passing through the common slot (54). At least one first phase insulating member (81) that electrically insulates between the first windings (61) is provided, and the insulation performance of the first phase insulating member (81) is the line insulation. It is an electric motor characterized by being different from the insulation performance of the member (80).

第４の態様では、第１相間絶縁部材（81）の絶縁性能と線間絶縁部材（80）の絶縁性能とを互いに異ならせることにより、これらの絶縁性能が互いに同一である場合よりも、第１相間絶縁部材（81）および線間絶縁部材（80）のうち一方において絶縁性能が過剰となることを抑制することができる。これにより、第１相間絶縁部材（81）の絶縁性能と線間絶縁部材（80）の絶縁性能とを適切に設計することができる。 In the fourth aspect, the insulation performance of the first phase insulating member (81) and the insulating performance of the line insulating member (80) are made different from each other, so that the insulating performances of the first phase insulating member (81) are different from each other. It is possible to prevent the insulation performance from becoming excessive in one of the one-phase insulation member (81) and the line insulation member (80). Thereby, the insulation performance of the first phase inter-phase insulating member (81) and the insulation performance of the line-line insulating member (80) can be appropriately designed.

本開示の第５の態様は、第４の態様において、前記共通スロット（54）を通過する第２巻線（62）の数は、２つ以上であり、前記共通スロット（54）を通過する２つ以上の第２巻線（62）のうち少なくとも２つに印加される電圧は、それぞれ異なる位相を有し、前記共通スロット（54）には、該共通スロット（54）を通過する２つ以上の第２巻線（62）の間を電気的に絶縁する少なくとも１つの第２相間絶縁部材（82）が設けられ、前記第２相間絶縁部材（82）の絶縁性能は、前記線間絶縁部材（80）の絶縁性能および前記第１相間絶縁部材（81）の絶縁性能と異なることを特徴とする電動機である。 In the fifth aspect of the present disclosure, in the fourth aspect, the number of the second windings (62) passing through the common slot (54) is two or more, and the second winding (62) passes through the common slot (54). The voltages applied to at least two of the two or more second windings (62) have different phases, and the common slot (54) has two passing through the common slot (54). At least one second phase insulating member (82) that electrically insulates between the second windings (62) is provided, and the insulation performance of the second phase insulating member (82) is the line insulation. The electric motor is characterized in that it differs from the insulation performance of the member (80) and the insulation performance of the first-phase interphase insulation member (81).

第５の態様では、第２相間絶縁部材（82）の絶縁性能と線間絶縁部材（80）の絶縁性能と第１相間絶縁部材（81）とを異ならせることにより、これらの絶縁性能が同一である場合よりも、線間絶縁部材（80）と第１相間絶縁部材（81）と第２相間絶縁部材（82）のうち２つにおいて絶縁性能が過剰となることを抑制することができる。これにより、第１相間絶縁部材（81）の絶縁性能と第２相間絶縁部材（82）の絶縁性能と線間絶縁部材（80）の絶縁性能とを適切に設計することができる。 In the fifth aspect, the insulating performance of the second phase insulating member (82), the insulating performance of the line insulating member (80), and the first phase insulating member (81) are made different so that the insulating performances are the same. It is possible to prevent the insulation performance from becoming excessive in two of the line-to-line insulating member (80), the first-phase inter-phase insulating member (81), and the second-phase inter-phase insulating member (82). As a result, the insulation performance of the first-phase insulation member (81), the insulation performance of the second-phase insulation member (82), and the insulation performance of the line insulation member (80) can be appropriately designed.

本開示の第６の態様は、第２の態様において、前記複数のティース（52）のうち前記共通スロット（54）を構成する２つのティース（52）の各々には、前記第１巻線（61）と前記第２巻線（62）とが集中巻により巻回され、前記共通スロット（54）を構成する２つのティース（52）の各々に巻回される第１巻線（61）に印加される電圧は、それぞれ異なる位相を有し、前記共通スロット（54）を構成する２つのティース（52）の各々に巻回される第２巻線（62）に印加される電圧は、それぞれ異なる位相を有し、前記共通スロット（54）を構成する２つのティース（52）の各々に巻回される第１巻線（61）の間の絶縁距離（D1）は、前記共通スロット（54）を構成する２つのティース（52）の各々に巻回される第２巻線（62）の間の絶縁距離（D2）と異なることを特徴とする電動機である。 A sixth aspect of the present disclosure is, in the second aspect, the first winding (52) in each of the two teeth (52) constituting the common slot (54) among the plurality of teeth (52). 61) and the second winding (62) are wound by centralized winding, and are wound around the first winding (61) wound around each of the two teeth (52) constituting the common slot (54). The applied voltages have different phases, and the voltage applied to the second winding (62) wound around each of the two teeth (52) constituting the common slot (54) is different. The insulation distance (D1) between the first windings (61) that have different phases and are wound around each of the two teeth (52) that make up the common slot (54) is the common slot (54). ) Is different from the insulation distance (D2) between the second windings (62) wound around each of the two teeth (52) constituting the electric motor.

第６の態様では、共通スロット（54）において第１巻線（61）の間の絶縁距離（D1）と第２巻線（62）の間の絶縁距離（D2）とを互いに異ならせることにより、これらの絶縁距離が互いに同一である場合よりも、第１巻線（61）の間の絶縁距離（D1）および第２巻線（62）の間の絶縁距離（D2）のうち一方が過剰となることを抑制することができる。これにより、第１巻線（61）の間の絶縁距離（D1）と第２巻線（62）の間の絶縁距離（D2）とを適切に設計することができる。 In the sixth aspect, in the common slot (54), the insulation distance (D1) between the first windings (61) and the insulation distance (D2) between the second windings (62) are made different from each other. , One of the insulation distance (D1) between the first winding (61) and the insulation distance (D2) between the second winding (62) is excessive than when these insulation distances are the same as each other. Can be suppressed. Thereby, the insulation distance (D1) between the first winding (61) and the insulation distance (D2) between the second winding (62) can be appropriately designed.

本開示の第７の態様は、第１の態様において、前記複数のスロット（53）は、前記第１巻線（61）が通過し且つ前記第２巻線（62）が通過しない第１スロット（55）と、前記第２巻線（62）が通過し且つ前記第１巻線（61）が通過しない第２スロット（56）とを含み、前記複数の絶縁部材（70）のうち前記第１スロット（55）に設けられる絶縁部材（70）の絶縁性能は、前記複数の絶縁部材（70）のうち前記第２スロット（56）に設けられる絶縁部材（70）の絶縁性能と異なることを特徴とする電動機である。 A seventh aspect of the present disclosure is, in the first aspect, the first slot through which the first winding (61) passes and the second winding (62) does not pass through the plurality of slots (53). (55) and the second slot (56) through which the second winding (62) passes and the first winding (61) does not pass, and the first of the plurality of insulating members (70). The insulation performance of the insulating member (70) provided in the one slot (55) is different from the insulating performance of the insulating member (70) provided in the second slot (56) among the plurality of insulating members (70). It is a characteristic electric motor.

第７の態様では、第１スロット（55）に設けられる絶縁部材（70）の絶縁性能と第２スロット（56）に設けられる絶縁部材（70）の絶縁性能とを互いに異ならせることにより、これらの絶縁性能が互いに同一である場合よりも、第１スロット（55）に設けられる絶縁部材（70）および第２スロット（56）に設けられる絶縁部材（70）のうち一方において絶縁性能が過剰となることを抑制することができる。これにより、第１スロット（55）に設けられる絶縁部材（70）の絶縁性能と第２スロット（56）に設けられる絶縁部材（70）の絶縁性能とを適切に設計することができる。 In the seventh aspect, the insulating performance of the insulating member (70) provided in the first slot (55) and the insulating performance of the insulating member (70) provided in the second slot (56) are made different from each other. The insulation performance is excessive in one of the insulating member (70) provided in the first slot (55) and the insulating member (70) provided in the second slot (56), as compared with the case where the insulating performances of the above are the same. It can be suppressed. Thereby, the insulation performance of the insulating member (70) provided in the first slot (55) and the insulating performance of the insulating member (70) provided in the second slot (56) can be appropriately designed.

本開示の第８の態様は、第１〜第７の態様のいずれか１つにおいて、前記固定子コア（50）と前記第１巻線（61）のコイルエンド部（61e）との間の絶縁距離（D3）は、前記固定子コア（50）と前記第２巻線（62）のコイルエンド部（62e）との間の絶縁距離（D4）と異なることを特徴とする電動機である。 An eighth aspect of the present disclosure is, in any one of the first to seventh aspects, between the stator core (50) and the coil end portion (61e) of the first winding (61). The insulation distance (D3) is different from the insulation distance (D4) between the stator core (50) and the coil end portion (62e) of the second winding (62).

第８の態様では、固定子コア（50）と第１巻線（61）のコイルエンド部（61e）との間の絶縁距離（D3）と固定子コア（50）と第２巻線（62）のコイルエンド部（62e）との間の絶縁距離（D4）とを互いに異ならせることにより、これらの絶縁距離が互いに同一である場合よりも、固定子コア（50）と第１巻線（61）のコイルエンド部（61e）との間の絶縁距離（D3）および固定子コア（50）と第２巻線（62）のコイルエンド部（62e）との間の絶縁距離（D4）のうち一方が過剰となることを抑制することができる。これにより、固定子コア（50）と第１巻線（61）のコイルエンド部（61e）との間の絶縁距離（D3）と固定子コア（50）と第２巻線（62）のコイルエンド部（62e）との間の絶縁距離（D4）とを適切に設計することができる。 In the eighth aspect, the insulation distance (D3) between the stator core (50) and the coil end portion (61e) of the first winding (61) and the stator core (50) and the second winding (62). By making the insulation distances (D4) between the coil ends (62e) and the coil ends (62e) different from each other, the stator core (50) and the first winding (1st winding) (more than when these insulation distances are the same as each other). Of the insulation distance (D3) between the coil end (61e) of 61) and the insulation distance (D4) between the stator core (50) and the coil end (62e) of the second winding (62). It is possible to prevent one of them from becoming excessive. As a result, the insulation distance (D3) between the stator core (50) and the coil end portion (61e) of the first winding (61) and the coil of the stator core (50) and the second winding (62) The insulation distance (D4) from the end portion (62e) can be properly designed.

本開示の第９の態様は、第１〜第８の態様のいずれか１つにおいて、前記第１巻線部および前記第２巻線部の一方は、通電により前記回転子（30）を回転駆動させるための電磁力を発生させる駆動巻線部であり、前記第１巻線部および前記第２巻線部の他方は、通電により前記回転子（30）を非接触で支持するための電磁力を発生させる支持巻線部であることを特徴とする電動機である。 In the ninth aspect of the present disclosure, in any one of the first to eighth aspects, one of the first winding portion and the second winding portion rotates the rotor (30) by energization. It is a drive winding portion that generates an electromagnetic force for driving, and the other of the first winding portion and the second winding portion is an electromagnetic wave for non-contactly supporting the rotor (30) by energization. It is an electric motor characterized by being a support winding portion that generates a force.

第９の態様では、回転子（30）を非接触で支持しながら回転子（30）を回転駆動させる電動機（いわゆるベアリングレスモータ）を構成することができる。 In the ninth aspect, an electric motor (so-called bearingless motor) that rotationally drives the rotor (30) while supporting the rotor (30) in a non-contact manner can be configured.

本開示の第１０の態様は、第９の態様において、前記駆動巻線部に印加される電圧は、前記支持巻線部に印加される電圧よりも高く、前記複数の絶縁部材（70）は、前記固定子コア（50）と前記駆動巻線部に含まれる巻線（60）とを電気的に絶縁する部分の絶縁性能が前記固定子コア（50）と前記支持巻線部に含まれる巻線（60）とを電気的に絶縁する部分の絶縁性能よりも高いことを特徴とする電動機である。 In the tenth aspect of the present disclosure, in the ninth aspect, the voltage applied to the drive winding portion is higher than the voltage applied to the support winding portion, and the plurality of insulating members (70) are present. The insulator core (50) and the support winding portion include the insulation performance of the portion that electrically insulates the stator core (50) and the winding (60) included in the drive winding portion. It is an electric motor characterized in that it has higher insulation performance than the portion that electrically insulates the winding (60).

第１０の態様では、回転子（30）を非接触で支持しながら回転子（30）を回転駆動させる電動機（いわゆるベアリングレスモータ）における絶縁部材（70）の絶縁性能を適切に設計することができる。 In the tenth aspect, the insulation performance of the insulating member (70) in the electric motor (so-called bearingless motor) that rotationally drives the rotor (30) while supporting the rotor (30) in a non-contact manner can be appropriately designed. it can.

図１は、実施形態１のターボ圧縮機の構成を例示する縦断面図である。FIG. 1 is a vertical cross-sectional view illustrating the configuration of the turbo compressor according to the first embodiment. 図２は、実施形態１の電動機の構成を例示する横断面図である。FIG. 2 is a cross-sectional view illustrating the configuration of the electric motor according to the first embodiment. 図３は、実施形態１の電動機の要部を例示する横断面図である。FIG. 3 is a cross-sectional view illustrating a main part of the electric motor of the first embodiment. 図４は、実施形態１の変形例１の電動機の要部を例示する横断面図である。FIG. 4 is a cross-sectional view illustrating a main part of the electric motor of the first modification of the first embodiment. 図５は、実施形態１の変形例２の電動機の要部を例示する横断面図である。FIG. 5 is a cross-sectional view illustrating a main part of the electric motor of the second modification of the first embodiment. 図６は、実施形態２の電動機の要部を例示する横断面図である。FIG. 6 is a cross-sectional view illustrating a main part of the electric motor of the second embodiment. 図７は、実施形態３の電動機の要部を例示する縦断面図である。FIG. 7 is a vertical cross-sectional view illustrating a main part of the electric motor according to the third embodiment.

以下、図面を参照して実施の形態を詳しく説明する。なお、図中同一または相当部分には同一の符号を付してその説明は繰り返さない。 Hereinafter, embodiments will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated.

（実施形態１）
図１は、実施形態１によるターボ圧縮機（10）の構成を例示する。ターボ圧縮機（10）は、冷媒回路（図示を省略）に設けられ、冷媒を圧縮する。この例では、ターボ圧縮機（10）は、ケーシング（11）と、駆動軸（12）と、インペラ（13）と、１つまたは複数（この例では２つ）の電動機（20）と、第１タッチダウン軸受（14）と、第２タッチダウン軸受（15）と、スラスト磁気軸受（16）と、制御部（17）と、電源部（18）とを備える。 (Embodiment 1)
FIG. 1 illustrates the configuration of the turbo compressor (10) according to the first embodiment. The turbo compressor (10) is provided in a refrigerant circuit (not shown) and compresses the refrigerant. In this example, the turbo compressor (10) is a casing (11), a drive shaft (12), an impeller (13), one or more (two in this example) electric motors (20), and a first. It includes a 1-touch-down bearing (14), a second touch-down bearing (15), a thrust magnetic bearing (16), a control unit (17), and a power supply unit (18).

なお、以下の説明において、「軸方向」とは、回転軸方向のことであって、駆動軸（12）の軸心の方向のことであり、「径方向」とは、駆動軸（12）の軸方向と直交する方向のことである。また、「外周側」とは、駆動軸（12）の軸心からより遠い側のことであり、「内周側」とは、駆動軸（12）の軸心により近い側のことである。 In the following description, the "axial direction" is the rotation axis direction, which is the direction of the axis of the drive shaft (12), and the "diameter direction" is the drive shaft (12). It is a direction orthogonal to the axial direction of. Further, the "outer circumference side" is a side farther from the axis of the drive shaft (12), and the "inner circumference side" is a side closer to the axis of the drive shaft (12).

〔ケーシング〕
ケーシング（11）は、両端が閉塞された円筒状に形成され、円筒軸線が水平向きとなるように配置される。ケーシング（11）内の空間は、壁部（11a）によって区画され、壁部（11a）よりも右側の空間がインペラ（13）を収容するインペラ室（S1）を構成し、壁部（11a）よりも左側の空間が電動機（20）を収容する電動機室（S2）を構成する。また、電動機室（S2）には、電動機（20）と第１タッチダウン軸受（14）と第２タッチダウン軸受（15）とスラスト磁気軸受（16）が収容され、これらが電動機室（S2）の内周壁に固定される。〔casing〕
The casing (11) is formed in a cylindrical shape with both ends closed, and is arranged so that the cylindrical axis is oriented horizontally. The space inside the casing (11) is partitioned by the wall portion (11a), and the space on the right side of the wall portion (11a) constitutes the impeller chamber (S1) for accommodating the impeller (13), and the wall portion (11a). The space to the left of the side constitutes the motor room (S2) that houses the motor (20). Further, the electric motor room (S2) houses the electric motor (20), the first touchdown bearing (14), the second touchdown bearing (15), and the thrust magnetic bearing (16), and these are the electric motor room (S2). It is fixed to the inner peripheral wall of.

〔駆動軸〕
駆動軸（12）は、インペラ（13）を回転駆動するために設けられる。この例では、駆動軸（12）は、ケーシング（11）内を軸方向に延びてインペラ（13）と電動機（20）とを連結する。具体的には、駆動軸（12）の一端部にインペラ（13）が固定され、駆動軸（12）の中間部に電動機（20）が配置される。また、駆動軸（12）の他端部（すなわちインペラ（13）が固定された一端部とは反対側の端部）には、円盤状の部分（以下「円盤部（12a）と記載」）が設けられている。なお、駆動軸（12）は、磁性材料（例えば鉄）で構成される。 [Drive shaft]
The drive shaft (12) is provided to drive the impeller (13) to rotate. In this example, the drive shaft (12) extends axially in the casing (11) to connect the impeller (13) and the electric motor (20). Specifically, the impeller (13) is fixed to one end of the drive shaft (12), and the electric motor (20) is arranged in the middle of the drive shaft (12). Further, at the other end of the drive shaft (12) (that is, the end opposite to the one end where the impeller (13) is fixed), a disk-shaped portion (hereinafter referred to as "disk portion (12a)"). Is provided. The drive shaft (12) is made of a magnetic material (for example, iron).

〔インペラ〕
インペラ（13）は、複数の羽根によって外形が略円錐形状となるように形成され、駆動軸（12）に連結される。この例では、インペラ（13）は、駆動軸（12）の一端部に固定された状態で、インペラ室（S1）に収容される。インペラ室（S1）には、吸入管（P1）と吐出管（P2）とが接続される。吸入管（P1）は、冷媒（流体）を外部からインペラ室（S1）に導くために設けられる。吐出管（P2）は、インペラ室（S1）内で圧縮された高圧の冷媒（流体）を外部へ戻すために設けられる。すなわち、この例では、インペラ（13）とインペラ室（S1）とによって圧縮機構が構成される。 [Imeller]
The impeller (13) is formed by a plurality of blades so as to have a substantially conical shape in outer shape, and is connected to the drive shaft (12). In this example, the impeller (13) is housed in the impeller chamber (S1) while being fixed to one end of the drive shaft (12). The suction pipe (P1) and the discharge pipe (P2) are connected to the impeller chamber (S1). The suction pipe (P1) is provided to guide the refrigerant (fluid) from the outside to the impeller chamber (S1). The discharge pipe (P2) is provided to return the high-pressure refrigerant (fluid) compressed in the impeller chamber (S1) to the outside. That is, in this example, the compression mechanism is configured by the impeller (13) and the impeller chamber (S1).

〔電動機〕
電動機（20）は、回転子（30）と固定子（40）とを有し、電磁力により駆動軸（12）を非接触で支持し且つ電磁力により駆動軸（12）を回転駆動させる。回転子（30）は、駆動軸（12）に固定され、固定子（40）は、ケーシング（11）の内周壁に固定される。この例では、駆動軸（12）の軸方向において２つの電動機（20）が並んで配置される。なお、電動機（20）の構成については、後で詳しく説明する。〔Electric motor〕
The electric motor (20) has a rotor (30) and a stator (40), supports the drive shaft (12) in a non-contact manner by an electromagnetic force, and rotationally drives the drive shaft (12) by an electromagnetic force. The rotor (30) is fixed to the drive shaft (12) and the stator (40) is fixed to the inner peripheral wall of the casing (11). In this example, two electric motors (20) are arranged side by side in the axial direction of the drive shaft (12). The configuration of the electric motor (20) will be described in detail later.

〔タッチダウン軸受〕
第１タッチダウン軸受（14）は、駆動軸（12）の一端部（図１では右端部）の近傍に設けられ、第２タッチダウン軸受（15）は、駆動軸（12）の他端部（図１では左端部）の近傍に設けられる。第１および第２タッチダウン軸受（14,15）は、電動機（20）が非通電であるとき（すなわち駆動軸（12）が浮上していないとき）に駆動軸（12）を支持する。 [Touchdown bearing]
The first touchdown bearing (14) is provided near one end (right end in FIG. 1) of the drive shaft (12), and the second touchdown bearing (15) is the other end of the drive shaft (12). It is provided in the vicinity of (the left end in FIG. 1). The first and second touchdown bearings (14,15) support the drive shaft (12) when the motor (20) is de-energized (ie, when the drive shaft (12) is not levitated).

〔スラスト磁気軸受〕
スラスト磁気軸受（16）は、第１および第２スラスト電磁石（16a,16b）を有し、駆動軸（12）の円盤部（12a）を電磁力によって非接触で支持する。具体的には、第１および第２スラスト電磁石（16a,16b）は、それぞれが円環状に形成された固定子コアと巻線とを有し、駆動軸（12）の円盤部（12a）を挟んで互いに対向し、第１および第２スラスト電磁石（16a,16b）の合成電磁力により駆動軸（12）の円盤部（12a）を非接触に支持する。すなわち、第１および第２スラスト電磁石（16a,16b）に流れる電流を制御することにより、第１および第２スラスト電磁石（16a,16b）の合成電磁力を制御して第１および第２スラスト電磁石（16a,16b）の対向方向（すなわち軸方向、図１では左右方向）における駆動軸（12）の位置を制御することができる。 [Thrust magnetic bearing]
The thrust magnetic bearing (16) has first and second thrust electromagnets (16a, 16b), and supports the disk portion (12a) of the drive shaft (12) in a non-contact manner by an electromagnetic force. Specifically, the first and second thrust electromagnets (16a, 16b) each have a stator core and a winding formed in an annular shape, and form a disk portion (12a) of the drive shaft (12). They face each other with each other sandwiched between them, and non-contactly support the disk portion (12a) of the drive shaft (12) by the combined electromagnetic force of the first and second thrust electromagnets (16a, 16b). That is, by controlling the current flowing through the first and second thrust electromagnets (16a, 16b), the combined electromagnetic force of the first and second thrust electromagnets (16a, 16b) is controlled to control the first and second thrust electromagnets. The position of the drive shaft (12) in the opposite direction (that is, the axial direction, the left-right direction in FIG. 1) in (16a, 16b) can be controlled.

〔各種センサ〕
ターボ圧縮機（10）の各部には、位置センサや電流センサや回転速度センサなどの各種センサ（図示を省略）が設けられる。例えば、電動機（20）には、回転子（30）のラジアル方向（径方向）における位置に応じた検出信号を出力する位置センサ（図示を省略）が設けられ、スラスト磁気軸受（16）には、駆動軸（12）のスラスト方向（軸方向）における位置に応じた検出信号を出力する位置センサ（図示を省略）が設けられる。これらの位置センサは、例えば、測定対象物との間のギャップ（距離）を検出する渦電流式の変位センサによって構成される。 [Various sensors]
Various sensors (not shown) such as a position sensor, a current sensor, and a rotation speed sensor are provided in each part of the turbo compressor (10). For example, the electric motor (20) is provided with a position sensor (not shown) that outputs a detection signal according to the position of the rotor (30) in the radial direction (radial direction), and the thrust magnetic bearing (16) is provided with a position sensor (not shown). , A position sensor (not shown) that outputs a detection signal according to the position of the drive shaft (12) in the thrust direction (axial direction) is provided. These position sensors are composed of, for example, an eddy current type displacement sensor that detects a gap (distance) with an object to be measured.

〔制御部〕
制御部（17）は、駆動軸（12）が非接触で支持された状態で駆動軸（12）の回転速度が予め定められた目標回転速度となるように、ターボ圧縮機（10）の各部に設けられた各種センサからの検出信号や駆動軸（12）の目標回転速度などの情報に基づいて、モータ電圧指令値とスラスト電圧指令値とを生成して出力する。モータ電圧指令値は、電動機（20）の固定子（40）の巻線に供給される電圧を制御するための指令値である。スラスト電圧指令値は、スラスト磁気軸受（16）の第１および第２スラスト電磁石（16a,16b）の巻線に供給される電圧を制御するための指令値である。制御部（17）は、例えば、プロセッサ、プロセッサを動作させるためのプログラムや情報を記憶するメモリなどによって構成される。 [Control unit]
The control unit (17) is a unit of the turbo compressor (10) so that the rotation speed of the drive shaft (12) becomes a predetermined target rotation speed while the drive shaft (12) is supported in a non-contact manner. Based on information such as detection signals from various sensors provided in the above and the target rotation speed of the drive shaft (12), a motor voltage command value and a thrust voltage command value are generated and output. The motor voltage command value is a command value for controlling the voltage supplied to the winding of the stator (40) of the electric motor (20). The thrust voltage command value is a command value for controlling the voltage supplied to the windings of the first and second thrust electromagnets (16a, 16b) of the thrust magnetic bearing (16). The control unit (17) is composed of, for example, a processor, a memory for storing programs and information for operating the processor, and the like.

〔電源部〕
電源部（18）は、制御部（17）から出力されたモータ電圧指令値とスラスト電圧指令値とに基づいて、電動機（20）の固定子（40）の巻線とスラスト磁気軸受（16）の第１および第２スラスト電磁石（16a,16b）の巻線とに電圧をそれぞれ供給する。電源部（18）は、例えば、ＰＷＭ（Pulse Width Modulation）アンプによって構成される。〔Power supply part〕
The power supply unit (18) is based on the motor voltage command value and the thrust voltage command value output from the control unit (17), and the winding of the stator (40) of the motor (20) and the thrust magnetic bearing (16). A voltage is supplied to the windings of the first and second thrust electromagnets (16a, 16b) of the above, respectively. The power supply unit (18) is composed of, for example, a PWM (Pulse Width Modulation) amplifier.

上記のように、電動機（20）の固定子（40）の巻線に印加される電圧を制御することにより、固定子（40）の巻線を流れる電流を制御して電動機（20）において発生する磁束を制御することができる。また、スラスト磁気軸受（16）の第１および第２スラスト電磁石（16a,16b）の巻線に供給される電圧を制御することにより、第１および第２スラスト電磁石（16a,16b）の巻線を流れる電流を制御して第１および第２スラスト電磁石（16a,16b）の合成電磁力を制御することができる。 As described above, by controlling the voltage applied to the winding of the stator (40) of the motor (20), the current flowing through the winding of the stator (40) is controlled and generated in the motor (20). It is possible to control the magnetic flux to be generated. Further, by controlling the voltage supplied to the windings of the first and second thrust electromagnets (16a, 16b) of the thrust magnetic bearing (16), the windings of the first and second thrust electromagnets (16a, 16b) are wound. The combined electromagnetic force of the first and second thrust electromagnets (16a, 16b) can be controlled by controlling the current flowing through.

〔電動機の構成〕
図２および図３は、電動機（20）の構成を例示する。この例では、電動機（20）は、コンシクエントポール型のベアリングレスモータ（埋込磁石型のベアリングレスモータ）を構成する。なお、図２では、巻線と絶縁部材の図示が簡略化され、ハッチングの図示が省略されている。 [Composition of electric motor]
2 and 3 illustrate the configuration of the electric motor (20). In this example, the electric motor (20) constitutes a consequential pole type bearingless motor (embedded magnet type bearingless motor). In FIG. 2, the drawing of the winding and the insulating member is simplified, and the hatching is omitted.

〈回転子〉
回転子（30）は、回転子コア（31）と、回転子コア（31）に設けられた複数（この例では４つ）の永久磁石（32）とを有する。 <Rotor>
The rotor (30) has a rotor core (31) and a plurality of (four in this example) permanent magnets (32) provided on the rotor core (31).

《回転子コア》
回転子コア（31）は、磁性材料で構成され、円柱状に形成される。回転子コア（31）の中央部には、駆動軸（12）を挿通するためのシャフト孔が形成される。《Rotor core》
The rotor core (31) is made of a magnetic material and is formed in a columnar shape. A shaft hole for inserting the drive shaft (12) is formed in the central portion of the rotor core (31).

《永久磁石》
複数の永久磁石（32）は、回転子（30）の周方向において所定の角度ピッチで配置される。この例では、４つの永久磁石（32）が回転子（30）の周方向において９０°の角度ピッチで配置される。また、この例では、４つの永久磁石（32）は、回転子コア（31）の外周面の近傍（外周部）に埋設され、それぞれが回転子コア（31）の外周面に沿う形状（円弧状）に形成される。そして、４つの永久磁石（32）の外周面側がＮ極となっており、回転子コア（31）の外周面のうち回転子（30）の周方向において４つの永久磁石（32）の間に位置する部分が擬似的にＳ極となっている。なお、４つの永久磁石（32）の外周面側がＳ極となっていてもよい。この場合、回転子コア（31）の外周面のうち回転子（30）の周方向において４つの永久磁石（32）の間に位置する部分が擬似的にＮ極となる。 "permanent magnet"
The plurality of permanent magnets (32) are arranged at predetermined angular pitches in the circumferential direction of the rotor (30). In this example, four permanent magnets (32) are arranged at an angular pitch of 90 ° in the circumferential direction of the rotor (30). Further, in this example, the four permanent magnets (32) are embedded in the vicinity (outer peripheral portion) of the outer peripheral surface of the rotor core (31), and each has a shape (circle) along the outer peripheral surface of the rotor core (31). It is formed in an arc shape). The outer peripheral surface side of the four permanent magnets (32) has N poles, and among the outer peripheral surfaces of the rotor core (31), between the four permanent magnets (32) in the circumferential direction of the rotor (30). The located portion is a pseudo S pole. The outer peripheral surface side of the four permanent magnets (32) may have an S pole. In this case, the portion of the outer peripheral surface of the rotor core (31) located between the four permanent magnets (32) in the circumferential direction of the rotor (30) becomes a pseudo N pole.

〈固定子〉
固定子（40）は、固定子コア（50）と、複数の巻線（60）と、複数の絶縁部材（70）とを有する。 <stator>
The stator (40) has a stator core (50), a plurality of windings (60), and a plurality of insulating members (70).

《固定子コア》
固定子コア（50）は、磁性材料で構成され、バックヨーク（51）と複数（この例では２４本）のティース（52）とを有する。バックヨーク（51）は、環状（この例では円環状）に形成される。複数のティース（52）は、バックヨーク（51）の内周に設けられる。複数のティース（52）は、固定子（40）の周方向に所定の間隔をおいて配列される。このような構成により、固定子（40）の周方向において隣り合う２つのティース（52）の間には、巻線（60）が通過するスロット（53）が形成される。すなわち、固定子（40）の周方向に配列された複数（この例では２４本）のティース（52）の間に複数（この例では２４個）のスロット（53）がそれぞれ形成される。《Stator core》
The stator core (50) is made of a magnetic material and has a back yoke (51) and a plurality (24 in this example) teeth (52). The back yoke (51) is formed in an annular shape (in this example, an annular shape). A plurality of teeth (52) are provided on the inner circumference of the back yoke (51). The plurality of teeth (52) are arranged at predetermined intervals in the circumferential direction of the stator (40). With such a configuration, a slot (53) through which the winding (60) passes is formed between two teeth (52) adjacent to each other in the circumferential direction of the stator (40). That is, a plurality of (24 in this example) slots (53) are formed between a plurality of (24 in this example) teeth (52) arranged in the circumferential direction of the stator (40).

《巻線》
複数の巻線（60）は、複数のティース（52）の間にそれぞれ形成される複数のスロット（53）を通過するように配線される。複数の巻線（60）は、通電により電磁力を発生させる。この例では、複数の巻線（60）は、分布巻により複数のティース（52）に巻回される。また、この例では、巻線（60）は、絶縁材料（例えば樹脂）で構成された絶縁皮膜に覆われている。また、巻線（60）は、複数の電線（マグネットワイヤ）により構成されてもよい。《Winding》
The plurality of windings (60) are wired so as to pass through a plurality of slots (53) formed between the plurality of teeth (52). The plurality of windings (60) generate electromagnetic force by energization. In this example, the plurality of windings (60) are wound around the plurality of teeth (52) by a distributed winding. Further, in this example, the winding (60) is covered with an insulating film made of an insulating material (for example, resin). Further, the winding (60) may be composed of a plurality of electric wires (magnet wires).

複数の巻線（60）は、少なくとも１つの第１巻線（61）と、少なくとも１つの第２巻線（62）とを含む。第１巻線（61）は、電圧が印加される第１巻線部に含まれる巻線（60）である。第２巻線（62）は、第１巻線部に印加される電圧とは異なる電圧が印加される第２巻線部に含まれる巻線（60）である。具体的には、第１巻線部に印加される電圧の大きさ（詳しくは最大瞬時値）は、第２巻線部に印加される電圧の大きさ（詳しくは最大瞬時値）と異なる。 The plurality of windings (60) includes at least one first winding (61) and at least one second winding (62). The first winding (61) is a winding (60) included in the first winding portion to which a voltage is applied. The second winding (62) is a winding (60) included in the second winding portion to which a voltage different from the voltage applied to the first winding portion is applied. Specifically, the magnitude of the voltage applied to the first winding portion (specifically, the maximum instantaneous value) is different from the magnitude of the voltage applied to the second winding portion (specifically, the maximum instantaneous value).

この例では、複数の巻線（60）は、複数の第１巻線（61）と複数の第２巻線（62）とを含む。複数の第１巻線（61）の各々に印加される電圧は、それぞれ異なる位相を有する。なお、複数の第１巻線（61）の各々に印加される電圧は、それぞれ同一の瞬時値となっている。複数の第２巻線（62）の各々に印加される電圧は、それぞれ異なる位相を有する。なお、複数の第２巻線（62）の各々に印加される電圧は、それぞれ同一の瞬時値となっている。 In this example, the plurality of windings (60) includes a plurality of first windings (61) and a plurality of second windings (62). The voltage applied to each of the plurality of first windings (61) has a different phase. The voltage applied to each of the plurality of first windings (61) has the same instantaneous value. The voltage applied to each of the plurality of second windings (62) has a different phase. The voltage applied to each of the plurality of second windings (62) has the same instantaneous value.

また、この例では、第１巻線部および第２巻線部の一方は、駆動巻線部である。駆動巻線部には、駆動電圧が印加される。駆動巻線部は、通電により回転子（30）を回転駆動させるための電磁力を発生させる。第１巻線部および第２巻線部の他方は、支持巻線部である。支持巻線部には、支持電圧が印加される。支持巻線部は、通電により回転子（30）を非接触で支持するための電磁力を発生させる。 Further, in this example, one of the first winding portion and the second winding portion is a drive winding portion. A drive voltage is applied to the drive winding portion. The drive winding unit generates an electromagnetic force for rotationally driving the rotor (30) by energization. The other of the first winding portion and the second winding portion is a support winding portion. A support voltage is applied to the support winding portion. The support winding portion generates an electromagnetic force for non-contactly supporting the rotor (30) by energization.

図２に示すように、この例では、駆動巻線部には、３相の駆動巻線が含まれ、支持巻線部には、３相の支持巻線が含まれる。複数の巻線（60）は、３相の駆動巻線を構成する３つの第１巻線（61）と、３相の支持巻線を構成する３つの第２巻線（62）とを含む。具体的には、細い一点鎖線で囲まれた第１巻線（61）がＵ相の駆動巻線を構成し、細い破線で囲まれた第１巻線（61）がＶ相の駆動巻線を構成し、細い点線で囲まれた第１巻線（61）がＷ相の駆動巻線を構成する。細い一点鎖線で囲まれた第２巻線（62）がＵ相の支持巻線を構成し、細い破線で囲まれた第２巻線（62）がＶ相の支持巻線を構成し、細い点線で囲まれた第２巻線（62）がＷ相の支持巻線を構成する。 As shown in FIG. 2, in this example, the drive winding portion includes a three-phase drive winding, and the support winding portion includes a three-phase support winding. The plurality of windings (60) includes three first windings (61) constituting a three-phase drive winding and three second windings (62) constituting a three-phase support winding. .. Specifically, the first winding (61) surrounded by a thin one-dot chain wire constitutes a U-phase drive winding, and the first winding (61) surrounded by a thin dashed line constitutes a V-phase drive winding. The first winding (61) surrounded by a thin dotted line constitutes a W-phase drive winding. The second winding (62) surrounded by a thin alternate long and short dash line constitutes the U-phase support winding, and the second winding (62) surrounded by the thin dashed line constitutes the V-phase support winding, which is thin. The second winding (62) surrounded by the dotted line constitutes the W-phase support winding.

３相の駆動巻線を構成する３つの第１巻線（61）の各々に印加される電圧は、それぞれ異なる位相を有する。具体的には、Ｕ相の駆動巻線を構成する第１巻線（61）には、Ｕ相の駆動電圧が印加され、Ｖ相の駆動巻線を構成する第１巻線（61）には、Ｖ相の駆動電圧が印加され、Ｗ相の駆動巻線を構成する第１巻線（61）には、Ｗ相の駆動電圧が印加される。 The voltages applied to each of the three first windings (61) that make up the three-phase drive winding have different phases. Specifically, a U-phase drive voltage is applied to the first winding (61) that constitutes the U-phase drive winding, and the first winding (61) that constitutes the V-phase drive winding is applied. Is applied with a V-phase drive voltage, and a W-phase drive voltage is applied to the first winding (61) constituting the W-phase drive winding.

３相の支持巻線を構成する３つの第２巻線（62）の各々に印加される電圧は、それぞれ異なる位相を有する。具体的には、Ｕ相の支持巻線を構成する第２巻線（62）には、Ｕ相の支持電圧が印加され、Ｖ相の支持巻線を構成する第２巻線（62）には、Ｖ相の支持電圧が印加され、Ｗ相の支持巻線を構成する第２巻線（62）には、Ｗ相の支持電圧が印加される。 The voltages applied to each of the three second windings (62) that make up the three-phase support winding have different phases. Specifically, a U-phase support voltage is applied to the second winding (62) that constitutes the U-phase support winding, and the second winding (62) that constitutes the V-phase support winding is applied. Is applied with a V-phase support voltage, and a W-phase support voltage is applied to the second winding (62) constituting the W-phase support winding.

《第１電源部および第２電源部》
この例では、電源部（18）は、第１巻線部に含まれる第１巻線（61）に電圧を供給する第１電源部と、第２巻線部に含まれる第２巻線（62）に電圧を供給する第２電源部とを有する。第１電源部は、第１電源部に入力された直流電圧に基づいて、第１巻線（61）に供給される電圧を生成する。第２電源部は、第２電源部に入力された直流電圧に基づいて、第２巻線（62）に供給される電圧を生成する。例えば、第１電源部および第２電源部の各々は、ＰＷＭアンプやインバータなどにより構成される。図３の例では、第１電源部は、３相の駆動巻線を構成する３つの第１巻線（61）に３相の電圧（駆動電圧）をそれぞれ供給する。第２電源部は、３相の支持巻線を構成する３つの第２巻線（62）に３相の電圧（支持電圧）をそれぞれ供給する。例えば、駆動巻線である第１巻線（61）に駆動電圧を供給する第１電源部に入力される直流電圧は、６８０Ｖである。支持巻線である第２巻線（62）に支持電圧を供給する第２電源部に入力される直流電圧は、３５０Ｖである。なお、ベアリングレスモータでは、回転子（30）が回転することで駆動巻線に誘起電圧が発生する。一方、支持巻線には、誘起電圧が発生しない。そのため、駆動巻線に印加される駆動電圧よりも、支持巻線に印加される支持電圧を低く設計することができる。 << 1st power supply unit and 2nd power supply unit >>
In this example, the power supply unit (18) includes a first power supply unit that supplies a voltage to the first winding (61) included in the first winding unit and a second winding (2nd winding) included in the second winding unit. It has a second power supply unit that supplies voltage to 62). The first power supply unit generates a voltage supplied to the first winding (61) based on the DC voltage input to the first power supply unit. The second power supply unit generates a voltage supplied to the second winding (62) based on the DC voltage input to the second power supply unit. For example, each of the first power supply unit and the second power supply unit is composed of a PWM amplifier, an inverter, or the like. In the example of FIG. 3, the first power supply unit supplies a three-phase voltage (drive voltage) to each of the three first windings (61) constituting the three-phase drive winding. The second power supply unit supplies a three-phase voltage (support voltage) to each of the three second windings (62) constituting the three-phase support winding. For example, the DC voltage input to the first power supply unit that supplies the drive voltage to the first winding (61), which is the drive winding, is 680V. The DC voltage input to the second power supply unit that supplies the support voltage to the second winding (62), which is the support winding, is 350V. In a bearingless motor, an induced voltage is generated in the drive winding by rotating the rotor (30). On the other hand, no induced voltage is generated in the support winding. Therefore, the support voltage applied to the support winding can be designed to be lower than the drive voltage applied to the drive winding.

《共通スロット》
また、この例では、複数のスロット（53）は、共通スロット（54）を含む。共通スロット（54）には、第１巻線（61）および第２巻線（62）が通過する。図３の例では、複数のスロット（53）の各々は、共通スロット（54）に該当する。また、この例では、共通スロット（54）において、第１巻線（61）と第２巻線（62）とが径方向に並んで配線される。具体的には、共通スロット（54）において、第１巻線（61）は、第２巻線（62）の径方向外方に配線される。《Common slot》
Also, in this example, the plurality of slots (53) include a common slot (54). The first winding (61) and the second winding (62) pass through the common slot (54). In the example of FIG. 3, each of the plurality of slots (53) corresponds to the common slot (54). Further, in this example, in the common slot (54), the first winding (61) and the second winding (62) are wired side by side in the radial direction. Specifically, in the common slot (54), the first winding (61) is wired outward in the radial direction of the second winding (62).

《絶縁部材》
図３に示すように、複数の絶縁部材（70）は、複数のスロット（53）の内壁部にそれぞれ設けられる。そして、複数の絶縁部材（70）は、固定子コア（50）と複数の巻線（60）とを電気的に絶縁する。この例では、絶縁部材（70）は、絶縁材料（例えば樹脂）で構成され、スロット（53）の内壁面に沿う板状に形成される。《Insulation member》
As shown in FIG. 3, the plurality of insulating members (70) are provided on the inner wall portions of the plurality of slots (53), respectively. The plurality of insulating members (70) electrically insulate the stator core (50) from the plurality of windings (60). In this example, the insulating member (70) is made of an insulating material (eg, resin) and is formed in a plate shape along the inner wall surface of the slot (53).

また、複数の絶縁部材（70）は、固定子コア（50）と第１巻線（61）とを電気的に絶縁する部分の絶縁性能と、固定子コア（50）と第２巻線（62）とを電気的に絶縁する部分の絶縁性能とが互いに異なる。なお、絶縁性能の具体例としては、絶縁抵抗が挙げられる。例えば、絶縁抵抗が高くなるほど、絶縁性能が高くなる。 Further, the plurality of insulating members (70) have the insulating performance of the portion that electrically insulates the stator core (50) and the first winding (61), and the stator core (50) and the second winding (60). 62) The insulation performance of the part that electrically insulates is different from each other. A specific example of the insulation performance is insulation resistance. For example, the higher the insulation resistance, the higher the insulation performance.

具体的には、複数の絶縁部材（70）は、第１巻線（61）および第２巻線（62）のうち要求される絶縁性能（以下「要求絶縁性能」と記載）が高いほうの巻線と固定コア（50）とを電気的に絶縁する部分の絶縁性能が第１巻線（61）および第２巻線（62）のうち要求絶縁性能が低いほうの巻線と固定コア（50）とを電気的に絶縁する部分の絶縁性能よりも高い。 Specifically, the plurality of insulating members (70) have the higher required insulation performance (hereinafter referred to as "required insulation performance") of the first winding (61) and the second winding (62). The insulation performance of the part that electrically insulates the winding and the fixed core (50) is the first winding (61) or the second winding (62), whichever has the lower required insulation performance, and the fixed core ( It is higher than the insulation performance of the part that electrically insulates 50).

なお、要求絶縁性能が異なる場合の具体例としては、第１巻線（61）に印加される電圧と第２巻線（62）に印加される電圧とが互いに異なる場合、第１巻線（61）に電圧を供給する第１電源部に入力される直流電圧と第２巻線（61）に電圧を供給する第２電源部に入力される直流電圧とが互いに異なる場合、第１電源部によるサージ電圧と第２電圧部によるサージ電圧とが互いに異なる場合などが挙げられる。第１電源部によるサージ電圧と第２電圧部によるサージ電圧とが互いに異なる場合の具体例としては、第１電源部を構成する部品（例えばスイッチング素子やゲート回路など）の仕様と第２電源部を構成する部品の仕様が互いに異なる場合、第１巻線（61）のインダクタンスと第２巻線（62）のインダクタンスとが互いに異なる場合などが挙げられる。 As a specific example when the required insulation performance is different, when the voltage applied to the first winding (61) and the voltage applied to the second winding (62) are different from each other, the first winding ( When the DC voltage input to the first power supply unit that supplies voltage to 61) and the DC voltage input to the second power supply unit that supplies voltage to the second winding (61) are different from each other, the first power supply unit There is a case where the surge voltage due to the above and the surge voltage due to the second voltage section are different from each other. Specific examples of cases where the surge voltage generated by the first power supply unit and the surge voltage generated by the second power supply unit are different from each other include the specifications of the components (for example, switching elements and gate circuits) constituting the first power supply unit and the second power supply unit. There are cases where the specifications of the components constituting the above are different from each other, cases where the inductance of the first winding (61) and the inductance of the second winding (62) are different from each other.

この例では、第１巻線（61）に印加される電圧は、第２巻線（62）に印加される電圧よりも高い。そのため、第１巻線（61）の要求絶縁性能は、第２巻線（62）の要求絶縁性能よりも高い。したがって、複数の絶縁部材（70）は、第１巻線（61）および第２巻線（62）のうち印加される電圧が高いほうの巻線と固定コア（50）とを電気的に絶縁する部分の絶縁性能が第１巻線（61）および第２巻線（62）のうち印加される電圧が低いほうの巻線と固定コア（50）とを電気的に絶縁する部分の絶縁性能よりも高い。 In this example, the voltage applied to the first winding (61) is higher than the voltage applied to the second winding (62). Therefore, the required insulation performance of the first winding (61) is higher than the required insulation performance of the second winding (62). Therefore, the plurality of insulating members (70) electrically insulate the first winding (61) and the second winding (62), whichever has the higher applied voltage, from the fixed core (50). Insulation performance of the part that electrically insulates the fixed core (50) from the winding with the lower applied voltage of the first winding (61) and the second winding (62). Higher than.

具体的には、この例では、駆動巻線部（第１巻線（61）が含まれる第１巻線部および第２巻線（62）が含まれる第２巻線部の一方）に印加される電圧は、支持巻線部（第１巻線（61）が含まれる第１巻線部および第２巻線（62）が含まれる第２巻線部の他方）に印加される電圧よりも高い。そして、複数の絶縁部材（70）は、固定子コア（50）と駆動巻線部に含まれる巻線（60）（第１巻線（61）および第２巻線（62）の一方）とを電気的に絶縁する部分の絶縁性能が固定子コア（50）と支持巻線部に含まれる巻線（60）（第１巻線（61）および第２巻線（62）の他方）とを電気的に絶縁する部分の絶縁性能よりも高い。 Specifically, in this example, it is applied to the drive winding portion (one of the first winding portion including the first winding (61) and the second winding portion including the second winding (62)). The voltage applied is from the voltage applied to the support winding portion (the other of the first winding portion including the first winding (61) and the second winding portion including the second winding (62)). Is also expensive. The plurality of insulating members (70) include the stator core (50) and the winding (60) included in the drive winding portion (one of the first winding (61) and the second winding (62)). The insulation performance of the part that electrically insulates the coil is the stator core (50) and the winding (60) included in the support winding (the other of the first winding (61) and the second winding (62)). It is higher than the insulation performance of the part that electrically insulates.

《絶縁部材の具体的構成》
実施形態１では、複数の絶縁部材（70）のうち共通スロット（54）に設けられる絶縁部材（70）は、第１部分（70a）と第２部分（70b）とを有する。第１部分（70a）は、固定子コア（50）と共通スロット（54）を通過する第１巻線（61）とを電気的に絶縁する。第２部分（70b）は、固定子コア（50）と共通スロット（54）を通過する第２巻線（62）とを電気的に絶縁する。 << Specific configuration of insulating member >>
In the first embodiment, the insulating member (70) provided in the common slot (54) among the plurality of insulating members (70) has a first portion (70a) and a second portion (70b). The first portion (70a) electrically insulates the stator core (50) from the first winding (61) passing through the common slot (54). The second portion (70b) electrically insulates the stator core (50) from the second winding (62) passing through the common slot (54).

また、実施形態１では、第１部分（70a）の絶縁性能は、第２部分（70b）の絶縁性能と異なる。具体的には、第１巻線（61）の要求絶縁性能が第２巻線（62）の要求絶縁性能よりも高い場合、第１部分（70a）の絶縁性能は、第２部分（70b）の絶縁性能よりも高い。逆に、第１巻線（61）の要求絶縁性能が第２巻線（62）の要求絶縁性能よりも低い場合、第１部分（70a）の絶縁性能は、第２部分（70b）の絶縁性能よりも低い。 Further, in the first embodiment, the insulation performance of the first portion (70a) is different from the insulation performance of the second portion (70b). Specifically, when the required insulation performance of the first winding (61) is higher than the required insulation performance of the second winding (62), the insulation performance of the first portion (70a) is the second portion (70b). Higher than the insulation performance of. On the contrary, when the required insulation performance of the first winding (61) is lower than the required insulation performance of the second winding (62), the insulation performance of the first portion (70a) is the insulation of the second portion (70b). Lower than performance.

この例では、第１巻線（61）に印加される電圧は、第２巻線（62）に印加される電圧よりも高い。そのため、第１巻線（61）の要求絶縁性能は、第２巻線（62）の要求絶縁性能よりも高い。したがって、第１部分（70a）の絶縁性能は、第２部分（70b）の絶縁性能よりも高い。 In this example, the voltage applied to the first winding (61) is higher than the voltage applied to the second winding (62). Therefore, the required insulation performance of the first winding (61) is higher than the required insulation performance of the second winding (62). Therefore, the insulation performance of the first portion (70a) is higher than the insulation performance of the second portion (70b).

図３の例では、絶縁部材（70）の第１部分（70a）の厚み（L1）は、その絶縁部材（70）の第２部分（70b）の厚み（L2）よりも厚い。なお、この例では、絶縁部材（70）の第１部分（70a）を構成する絶縁材料は、絶縁部材（70）の第２部分（70b）を構成する絶縁材料と同一である。このように、絶縁部材（70）の一部を厚くすることにより、その絶縁部材（70）の一部における絶縁性能（例えば絶縁抵抗）を高くすることができる。 In the example of FIG. 3, the thickness (L1) of the first portion (70a) of the insulating member (70) is thicker than the thickness (L2) of the second portion (70b) of the insulating member (70). In this example, the insulating material constituting the first portion (70a) of the insulating member (70) is the same as the insulating material constituting the second portion (70b) of the insulating member (70). By thickening a part of the insulating member (70) in this way, the insulation performance (for example, insulation resistance) of the part of the insulating member (70) can be increased.

例えば、絶縁部材（70）は、第１部分（70a）の厚み（L1）と第２部分（70b）の厚み（L2）とが互いに異なる形状となるように、射出成形により共通スロット（54）内に形成されてもよい。または、絶縁材料（70）は、絶縁材料で構成された複数枚の絶縁紙を重ねることで形成されてもよい。この場合、絶縁部材（70）の第１部分（70a）を構成する絶縁紙の枚数と絶縁部材（70）の第２部分（70b）を構成する絶縁紙の枚数とが互いに異なる。 For example, the insulating member (70) has a common slot (54) by injection molding so that the thickness (L1) of the first portion (70a) and the thickness (L2) of the second portion (70b) have different shapes. It may be formed in. Alternatively, the insulating material (70) may be formed by stacking a plurality of sheets of insulating paper made of the insulating material. In this case, the number of insulating papers constituting the first portion (70a) of the insulating member (70) and the number of insulating papers constituting the second portion (70b) of the insulating member (70) are different from each other.

《線間絶縁部材》
また、この例では、共通スロット（54）には、線間絶縁部材（80）が設けられる。線間絶縁部材（80）は、共通スロット（54）を通過する第１巻線（61）と第２巻線（62）とを電気的に絶縁する。この例では、線間絶縁部材（80）は、絶縁材料で構成され、板状に形成される。例えば、線間絶縁部材（80）は、絶縁紙により構成される。そして、線間絶縁部材（80）は、共通スロット（54）内の空間を２つの空間（具体的には径方向に並ぶ２つの空間）に区画する。そして、この２つの空間のうち一方の空間（図３の例では径方向外側の空間）を第１巻線（61）が通過し、他方の空間（図３の例では径方向内側の空間）を第２巻線（62）が通過する。《Line insulation member》
Further, in this example, the line insulation member (80) is provided in the common slot (54). The line insulation member (80) electrically insulates the first winding (61) and the second winding (62) passing through the common slot (54). In this example, the line insulating member (80) is made of an insulating material and is formed in a plate shape. For example, the line-to-line insulating member (80) is made of insulating paper. Then, the line insulation member (80) divides the space in the common slot (54) into two spaces (specifically, two spaces arranged in the radial direction). Then, the first winding (61) passes through one of these two spaces (the space on the outer side in the radial direction in the example of FIG. 3), and the other space (the space on the inner side in the radial direction in the example of FIG. 3). The second winding (62) passes through.

なお、共通スロット（54）に設けられる線間絶縁部材（80）の絶縁性能は、その共通スロット（54）に設けられる絶縁部材（70）の絶縁性能と異なる。具体的には、線間絶縁部材（80）および絶縁部材（70）のうち要求絶縁性能が高いほうの部材の絶縁性能が線間絶縁部材（80）および絶縁部材（70）のうち要求絶縁性能が低いほうの部材の絶縁性能よりも高い。 The insulation performance of the line-to-line insulating member (80) provided in the common slot (54) is different from the insulation performance of the insulating member (70) provided in the common slot (54). Specifically, the insulation performance of the line insulation member (80) and the insulation member (70) having the higher required insulation performance is the required insulation performance of the line insulation member (80) and the insulation member (70). Is higher than the insulation performance of the lower member.

この例では、線間絶縁部材（80）の要求絶縁性能は、絶縁部材（70）の要求絶縁性能よりも高い。したがって、線間絶縁部材（80）の絶縁性能は、絶縁部材（70）の絶縁性能よりも高い。例えば、線間絶縁部材（80）を構成する絶縁材料の絶縁性は、絶縁部材（70）を構成する絶縁材料の絶縁性よりも高い。 In this example, the required insulation performance of the line insulation member (80) is higher than the required insulation performance of the insulation member (70). Therefore, the insulation performance of the line insulation member (80) is higher than that of the insulation member (70). For example, the insulating property of the insulating material constituting the line-line insulating member (80) is higher than the insulating property of the insulating material constituting the insulating member (70).

〔実施形態１の効果〕
以上のように、実施形態１の電動機（20）は、回転子（30）と、固定子（40）とを備える。固定子（40）は、環状に形成されたバックヨーク（51）と、バックヨーク（51）の内周に設けられる複数のティース（52）とを有する固定子コア（50）と、複数のティース（52）の間にそれぞれ形成される複数のスロット（53）を通過するように配線される複数の巻線（60）と、複数のスロット（53）の内壁部にそれぞれ設けられ、固定子コア（50）と複数の巻線（60）とを電気的に絶縁する複数の絶縁部材（70）とを有する。複数の巻線（60）は、電圧が印加される第１巻線部に含まれる少なくとも１つの第１巻線（61）と、第１巻線部に印加される電圧とは異なる電圧が印加される第２巻線部に含まれる少なくとも１つ第２巻線（62）とを含む。複数の絶縁部材（70）は、固定子コア（50）と第１巻線（61）とを電気的に絶縁する部分の絶縁性能と固定子コア（50）と第２巻線（62）とを電気的に絶縁する部分の絶縁性能とが互いに異なる。 [Effect of Embodiment 1]
As described above, the electric motor (20) of the first embodiment includes a rotor (30) and a stator (40). The stator (40) includes a stator core (50) having a back yoke (51) formed in an annular shape and a plurality of teeth (52) provided on the inner circumference of the back yoke (51), and a plurality of teeth. A plurality of windings (60) wired so as to pass through a plurality of slots (53) formed between (52), and a stator core provided on the inner wall of the plurality of slots (53), respectively. It has a plurality of insulating members (70) that electrically insulate the (50) and the plurality of windings (60). A voltage different from at least one first winding (61) included in the first winding portion to which the voltage is applied and the voltage applied to the first winding portion is applied to the plurality of windings (60). It includes at least one second winding (62) included in the second winding portion to be formed. The plurality of insulating members (70) include the insulating performance of the portion that electrically insulates the stator core (50) and the first winding (61), and the stator core (50) and the second winding (62). The insulation performance of the part that electrically insulates is different from each other.

上記の構成では、固定子コア（50）と第１巻線（61）とを電気的に絶縁する部分の絶縁性能と固定子コア（50）と第２巻線（62）とを電気的に絶縁する部分の絶縁性能とを互いに異ならせることにより、これらの絶縁性能が互いに同一である場合よりも、固定子コア（50）と第１巻線（61）とを電気的に絶縁する部分および固定子コア（50）と第２巻線（62）とを電気的に絶縁する部分のうち一方（具体的には要求絶縁性能が低い方）において絶縁性能が過剰となることを抑制することができる。これにより、絶縁部材（70）の絶縁性能を適切に設計することができる。 In the above configuration, the insulation performance of the portion that electrically insulates the stator core (50) and the first winding (61) and the stator core (50) and the second winding (62) are electrically insulated. By making the insulating performance of the insulating portion different from each other, the portion that electrically insulates the stator core (50) and the first winding (61) and the portion that electrically insulates the stator core (50) and the first winding (61) than when these insulating performances are the same. It is possible to suppress excessive insulation performance in one of the parts that electrically insulate the stator core (50) and the second winding (62) (specifically, the one with the lower required insulation performance). it can. Thereby, the insulation performance of the insulating member (70) can be appropriately designed.

また、絶縁部材（70）の絶縁性能を適切に設計することができるので、絶縁部材（70）の厚みを適切に設計することができる。これにより、スロット（53）内における巻線（60）の占積率（スロット（53）の断面積に対してスロット（53）を通過する巻線（60）の断面積の合計が占める割合）を向上させることができる。このように、スロット（53）内における巻線（60）の占積率を向上させることができるので、電動機（20）のコイルエンド部を小さくすることができる。これにより、電動機（20）の軸方向長さを短くすることができるので、電動機（20）を小型化することができる。 Further, since the insulation performance of the insulating member (70) can be appropriately designed, the thickness of the insulating member (70) can be appropriately designed. As a result, the space factor of the winding (60) in the slot (53) (the ratio of the total cross-sectional area of the winding (60) passing through the slot (53) to the cross-sectional area of the slot (53)). Can be improved. In this way, the space factor of the winding (60) in the slot (53) can be improved, so that the coil end portion of the electric motor (20) can be made smaller. As a result, the axial length of the electric motor (20) can be shortened, so that the electric motor (20) can be miniaturized.

また、実施形態１の電動機（20）では、複数のスロット（53）は、第１巻線（61）および第２巻線（62）が通過する共通スロット（54）を含む。複数の絶縁部材（70）のうち共通スロット（54）に設けられる絶縁部材（70）は、固定子コア（50）と第１巻線（61）とを電気的に絶縁する第１部分（70a）と、固定子コア（50）と第２巻線（62）とを電気的に絶縁する第２部分（70b）とを有する。第１部分（70a）の絶縁性能は、第２部分（70b）の絶縁性能と異なる。 Further, in the electric motor (20) of the first embodiment, the plurality of slots (53) include a common slot (54) through which the first winding (61) and the second winding (62) pass. Of the plurality of insulating members (70), the insulating member (70) provided in the common slot (54) is the first portion (70a) that electrically insulates the stator core (50) and the first winding (61). ), And a second portion (70b) that electrically insulates the stator core (50) and the second winding (62). The insulation performance of the first portion (70a) is different from the insulation performance of the second portion (70b).

上記の構成では、第１部分（70a）の絶縁性能と第２部分（70b）の絶縁性能とを互いに異ならせることにより、これらの絶縁性能が互いに同一である場合よりも、第１部分（70a）および第２部分（70b）のうち一方（具体的には要求絶縁性能が低い方）において絶縁性能が過剰となることを抑制することができる。これにより、共通スロット（54）に設けられる絶縁部材（70）の絶縁性能を適切に設計することができる。 In the above configuration, by making the insulation performance of the first portion (70a) and the insulation performance of the second portion (70b) different from each other, the insulation performance of the first portion (70a) is higher than that in the case where these insulation performances are the same. ) And one of the second part (70b) (specifically, the one having the lower required insulation performance) can prevent the insulation performance from becoming excessive. Thereby, the insulation performance of the insulating member (70) provided in the common slot (54) can be appropriately designed.

また、共通スロット（54）に設けられる絶縁部材（70）の絶縁性能を適切に設計することができるので、絶縁部材（70）の第１部分（70a）の厚み（La）および第２部分（70b）の厚み（Lb）を適切に設計することができる。これにより、スロット（53）内における巻線（60）の占積率を向上させることができるので、電動機（20）のコイルエンド部を小さくすることができる。その結果、電動機（20）の軸方向長さを短くすることができ、電動機（20）を小型化することができる。 Further, since the insulation performance of the insulating member (70) provided in the common slot (54) can be appropriately designed, the thickness (La) of the first portion (70a) and the second portion (La) of the insulating member (70) can be appropriately designed. The thickness (Lb) of 70b) can be designed appropriately. As a result, the space factor of the winding (60) in the slot (53) can be improved, so that the coil end portion of the electric motor (20) can be made smaller. As a result, the axial length of the electric motor (20) can be shortened, and the electric motor (20) can be miniaturized.

また、実施形態１の電動機（20）では、共通スロット（54）には、第１巻線（61）と第２巻線（62）とを電気的に絶縁する線間絶縁部材（80）が設けられる。共通スロット（54）に設けられる線間絶縁部材（80）の絶縁性能は、複数の絶縁部材（70）のうち共通スロット（54）に設けられる絶縁部材（70）の絶縁性能と異なる。 Further, in the electric motor (20) of the first embodiment, the common slot (54) has an interline insulating member (80) that electrically insulates the first winding (61) and the second winding (62). It will be provided. The insulation performance of the line-to-line insulating member (80) provided in the common slot (54) is different from the insulation performance of the insulating member (70) provided in the common slot (54) among the plurality of insulating members (70).

上記の構成では、線間絶縁部材（80）の絶縁性能と絶縁部材（70）の絶縁性能とを互いに異ならせることにより、これらの絶縁性能が互いに同一である場合よりも、線間絶縁部材（80）および絶縁部材（70）のうち一方（具体的には要求絶縁性能が低い方）において絶縁性能が過剰となることを抑制することができる。これにより、線間絶縁部材（80）の絶縁性能と絶縁部材（70）の絶縁性能とを適切に設計することができる。 In the above configuration, by making the insulation performance of the line insulation member (80) and the insulation performance of the insulation member (70) different from each other, the line insulation member ( It is possible to prevent the insulation performance from becoming excessive in one of the 80) and the insulating member (70) (specifically, the one having the lower required insulation performance). Thereby, the insulation performance of the line insulation member (80) and the insulation performance of the insulation member (70) can be appropriately designed.

また、線間絶縁部材（80）の絶縁性能と絶縁部材（70）の絶縁性能とを適切に設計することができるので、線間絶縁部材（80）の厚みおよび絶縁部材（70）の厚みを適切に設計することができる。これにより、スロット（53）内における巻線（60）の占積率を向上させることができるので、電動機（20）のコイルエンド部を小さくすることができる。その結果、電動機（20）の軸方向長さを短くすることができ、電動機（20）を小型化することができる。 Further, since the insulation performance of the line insulation member (80) and the insulation performance of the insulation member (70) can be appropriately designed, the thickness of the line insulation member (80) and the thickness of the insulation member (70) can be adjusted. Can be designed properly. As a result, the space factor of the winding (60) in the slot (53) can be improved, so that the coil end portion of the electric motor (20) can be made smaller. As a result, the axial length of the electric motor (20) can be shortened, and the electric motor (20) can be miniaturized.

また、実施形態１の電動機（20）では、第１巻線部および第２巻線部の一方は、通電により回転子（30）を回転駆動させるための電磁力を発生させる駆動巻線部である。第１巻線部および第２巻線部の他方は、通電により回転子（30）を非接触で支持するための電磁力を発生させる支持巻線部である。 Further, in the electric motor (20) of the first embodiment, one of the first winding portion and the second winding portion is a drive winding portion that generates an electromagnetic force for rotationally driving the rotor (30) by energization. is there. The other of the first winding portion and the second winding portion is a support winding portion that generates an electromagnetic force for supporting the rotor (30) in a non-contact manner by energization.

上記の構成では、回転子（30）を非接触で支持しながら回転子（30）を回転駆動させる電動機（いわゆるベアリングレスモータ）を構成することができる。 With the above configuration, it is possible to configure an electric motor (so-called bearingless motor) that rotationally drives the rotor (30) while supporting the rotor (30) in a non-contact manner.

また、実施形態１の電動機（20）では、駆動巻線部に印加される電圧は、支持巻線部に印加される電圧よりも高い。複数の絶縁部材（70）は、固定子コア（50）と駆動巻線部に含まれる巻線（60）とを電気的に絶縁する部分の絶縁性能が固定子コア（50）と支持巻線部に含まれる巻線（60）とを電気的に絶縁する部分の絶縁性能よりも高い。 Further, in the electric motor (20) of the first embodiment, the voltage applied to the drive winding portion is higher than the voltage applied to the support winding portion. The plurality of insulating members (70) have the insulating performance of the portion that electrically insulates the stator core (50) and the winding (60) included in the drive winding portion from the stator core (50) and the support winding. It is higher than the insulation performance of the part that electrically insulates the winding (60) included in the part.

上記の構成では、回転子（30）を非接触で支持しながら回転子（30）を回転駆動させる電動機（いわゆるベアリングレスモータ）における絶縁部材（70）の絶縁性能を適切に設計することができる。 With the above configuration, the insulation performance of the insulating member (70) in the electric motor (so-called bearingless motor) that rotationally drives the rotor (30) while supporting the rotor (30) in a non-contact manner can be appropriately designed. ..

なお、実施形態１の電動機（20）では、共通スロット（54）において、第１巻線（61）は、第２巻線（62）の径方向内方に配線されてもよい。 In the electric motor (20) of the first embodiment, in the common slot (54), the first winding (61) may be wired inward in the radial direction of the second winding (62).

（実施形態１の変形例１）
図４は、実施形態１の変形例１による電動機（20）の要部を例示する。 (Modification 1 of Embodiment 1)
FIG. 4 illustrates a main part of the electric motor (20) according to the first modification of the first embodiment.

実施形態１の変形例１では、共通スロット（54）を通過する第１巻線（61）の数は、２つ以上である。共通スロット（54）を通過する２つ以上の第１巻線（61）のうち少なくとも２つに印加される電圧は、それぞれ異なる位相を有する。図４の例では、共通スロット（54）を通過する第１巻線（61）の数は、２つである。例えば、共通スロット（54）を通過する２つの第１巻線（61）のうち１つの第１巻線（61）は、Ｕ相の駆動巻線を構成し、もう１つの第１巻線（61）は、Ｖ相の駆動巻線を構成する。 In the first modification of the first embodiment, the number of the first windings (61) passing through the common slot (54) is two or more. The voltages applied to at least two of the two or more first windings (61) passing through the common slot (54) have different phases. In the example of FIG. 4, the number of the first windings (61) passing through the common slot (54) is two. For example, one of the two first windings (61) passing through the common slot (54) constitutes a U-phase drive winding and the other first winding (61). 61) constitutes a V-phase drive winding.

また、実施形態１の変形例１では、共通スロット（54）には、少なくとも１つの第１相間絶縁部材（81）が設けられる。第１相間絶縁部材（81）は、共通スロット（54）を通過する２つ以上の第１巻線（61）の間を電気的に絶縁する。図４の例では、第１相間絶縁部材（81）は、絶縁材料で構成され、板状に形成される。例えば、第１相間絶縁部材（81）は、絶縁紙により構成される。そして、第１相間絶縁部材（81）は、共通スロット（54）と線間絶縁部材（80）とにより形成される２つの空間（具体的には径方向に並ぶ２つの空間）のうち一方の空間（図４の例では径方向外側の空間）に配置され、その空間を２つの空間（具体的には径方向に並ぶ２つの空間）に区画する。そして、この２つの空間を２つの第１巻線（61）がそれぞれ通過する。 Further, in the first modification of the first embodiment, at least one first-phase interphase insulating member (81) is provided in the common slot (54). The first phase inter-phase insulating member (81) electrically insulates between two or more first windings (61) passing through the common slot (54). In the example of FIG. 4, the first phase interphase insulating member (81) is made of an insulating material and is formed in a plate shape. For example, the first phase interphase insulating member (81) is made of insulating paper. The first phase interphase insulating member (81) is one of two spaces (specifically, two spaces arranged in the radial direction) formed by the common slot (54) and the interline insulating member (80). It is arranged in a space (in the example of FIG. 4, the space outside in the radial direction), and the space is divided into two spaces (specifically, two spaces arranged in the radial direction). Then, the two first windings (61) pass through these two spaces, respectively.

なお、共通スロット（54）に設けられる第１相間絶縁部材（81）の絶縁性能は、その共通スロット（54）に設けられる線間絶縁部材（80）の絶縁性能と異なる。具体的には、第１相間絶縁部材（81）および線間絶縁部材（80）のうち要求絶縁性能が高いほうの部材の絶縁性能が第１相間絶縁部材（81）および線間絶縁部材（80）のうち要求絶縁性能が低いほうの部材の絶縁性能よりも高い。 The insulation performance of the first phase interphase insulating member (81) provided in the common slot (54) is different from the insulation performance of the line insulating member (80) provided in the common slot (54). Specifically, the insulation performance of the member having the higher required insulation performance among the first phase insulation member (81) and the line insulation member (80) is the first phase insulation member (81) and the line insulation member (80). ), Which has the lower required insulation performance, is higher than the insulation performance of the member.

この例では、第１相間絶縁部材（81）の要求絶縁性能は、線間絶縁部材（80）の要求絶縁性能よりも低い。したがって、第１相間絶縁部材（81）の絶縁性能は、線間絶縁部材（80）の絶縁性能よりも低い。例えば、第１相間絶縁部材（81）を構成する絶縁材料の絶縁性は、線間絶縁部材（80）を構成する絶縁材料の絶縁性よりも低い。 In this example, the required insulation performance of the first phase insulating member (81) is lower than the required insulation performance of the line insulating member (80). Therefore, the insulation performance of the first phase inter-phase insulating member (81) is lower than that of the line-line insulating member (80). For example, the insulating property of the insulating material constituting the first phase interphase insulating member (81) is lower than the insulating property of the insulating material constituting the line insulating member (80).

実施形態１の変形例１では、共通スロット（54）を通過する第２巻線（62）の数は、２つ以上である。共通スロット（54）を通過する２つ以上の第２巻線（62）のうち少なくとも２つに印加される電圧は、それぞれ異なる位相を有する。図４の例では、共通スロット（54）を通過する第２巻線（62）の数は、２つである。例えば、共通スロット（54）を通過する２つの第２巻線（62）のうち１つの第１巻線（61）は、Ｕ相の支持巻線を構成し、もう１つの第２巻線（62）は、Ｖ相の支持巻線を構成する。 In the first modification of the first embodiment, the number of the second windings (62) passing through the common slot (54) is two or more. The voltages applied to at least two of the two or more second windings (62) passing through the common slot (54) have different phases. In the example of FIG. 4, the number of the second windings (62) passing through the common slot (54) is two. For example, one of the two second windings (62) passing through the common slot (54), the first winding (61), constitutes a U-phase support winding and the other second winding (62). 62) constitutes a V-phase support winding.

また、実施形態１の変形例１では、共通スロット（54）には、少なくとも１つの第２相間絶縁部材（82）が設けられる。第２相間絶縁部材（82）は、共通スロット（54）を通過する２つ以上の第２巻線（62）の間を電気的に絶縁する。図４の例では、第２相間絶縁部材（82）は、絶縁材料で構成され、板状に形成される。例えば、第２相間絶縁部材（82）は、絶縁紙により構成される。そして、第２相間絶縁部材（82）は、共通スロット（54）と線間絶縁部材（80）とにより形成される２つの空間（具体的には径方向に並ぶ２つの空間）のうち一方の空間（図４の例では径方向内側の空間）に配置され、その空間を２つの空間（具体的には径方向に並ぶ２つの空間）に区画する。そして、この２つの空間を２つの第２巻線（62）がそれぞれ通過する。 Further, in the first modification of the first embodiment, at least one second-phase interphase insulating member (82) is provided in the common slot (54). The second phase inter-phase insulating member (82) electrically insulates between two or more second windings (62) passing through the common slot (54). In the example of FIG. 4, the second phase interphase insulating member (82) is made of an insulating material and is formed in a plate shape. For example, the second phase interphase insulating member (82) is made of insulating paper. The second phase interphase insulating member (82) is one of two spaces (specifically, two spaces arranged in the radial direction) formed by the common slot (54) and the interline insulating member (80). It is arranged in a space (in the example of FIG. 4, the space inside in the radial direction), and the space is divided into two spaces (specifically, two spaces arranged in the radial direction). Then, the two second windings (62) each pass through these two spaces.

なお、共通スロット（54）に設けられる第２相間絶縁部材（82）の絶縁性能は、その共通スロット（54）に設けられる線間絶縁部材（80）の絶縁性能および第１相間絶縁部材（81）の絶縁性能と異なる。具体的には、線間絶縁部材（80）と第１相間絶縁部材（81）と第２相間絶縁部材（82）のうち要求絶縁性能が最も高い絶縁部材の絶縁性能が最も高く、線間絶縁部材（80）と第１相間絶縁部材（81）と第２相間絶縁部材（82）のうち要求絶縁性能が最も低い絶縁部材の絶縁性能が最も低い。 The insulation performance of the second phase insulating member (82) provided in the common slot (54) is the insulation performance of the line insulating member (80) provided in the common slot (54) and the insulating performance of the first phase insulating member (81). ) Is different from the insulation performance. Specifically, among the line insulation member (80), the first phase insulation member (81), and the second phase insulation member (82), the insulation member having the highest required insulation performance has the highest insulation performance and line insulation. Of the member (80), the first phase insulating member (81), and the second phase insulating member (82), the insulating member having the lowest required insulating performance has the lowest insulating performance.

この例では、第１相間絶縁部材（81）の要求絶縁性能は、線間絶縁部材（80）の供給絶縁性能よりも低く、第２相間絶縁部材（82）の要求絶縁性能は、第１相間絶縁部材（81）の要求絶縁性能よりも低い。したがって、第１相間絶縁部材（81）の絶縁性能は、線間絶縁部材（80）の絶縁性能よりも低く、第２相間絶縁部材（82）の絶縁性能は、第１相間絶縁部材（81）の絶縁性能よりも低い。 In this example, the required insulation performance of the first phase insulation member (81) is lower than the supply insulation performance of the line insulation member (80), and the required insulation performance of the second phase insulation member (82) is between the first phases. It is lower than the required insulation performance of the insulating member (81). Therefore, the insulation performance of the first phase insulation member (81) is lower than that of the line insulation member (80), and the insulation performance of the second phase insulation member (82) is lower than that of the first phase insulation member (81). It is lower than the insulation performance of.

なお、実施形態１の変形例１による電動機（20）のその他の構成は、図１〜図３に示した実施形態１による電動機（20）の構成と同様である。 The other configurations of the electric motor (20) according to the first modification of the first embodiment are the same as the configurations of the electric motor (20) according to the first embodiment shown in FIGS. 1 to 3.

〔実施形態１の変形例１の効果〕
以上のように、実施形態１の変形例１の電動機（20）では、共通スロット（54）を通過する第１巻線（61）の数は、２つ以上である。共通スロット（54）を通過する２つ以上の第１巻線（61）のうち少なくとも２つに印加される電圧は、それぞれ異なる位相を有する。共通スロット（54）には、共通スロット（54）を通過する２つ以上の第１巻線（61）の間を電気的に絶縁する少なくとも１つの第１相間絶縁部材（81）が設けられる。第１相間絶縁部材（81）の絶縁性能は、線間絶縁部材（80）の絶縁性能と異なる。 [Effect of Modification 1 of Embodiment 1]
As described above, in the electric motor (20) of the first modification of the first embodiment, the number of the first windings (61) passing through the common slot (54) is two or more. The voltages applied to at least two of the two or more first windings (61) passing through the common slot (54) have different phases. The common slot (54) is provided with at least one first phase inter-phase insulating member (81) that electrically insulates between two or more first windings (61) passing through the common slot (54). The insulation performance of the first phase inter-phase insulating member (81) is different from the insulation performance of the line-line insulating member (80).

上記の構成では、第１相間絶縁部材（81）の絶縁性能と線間絶縁部材（80）の絶縁性能とを互いに異ならせることにより、これらの絶縁性能が互いに同一である場合よりも、第１相間絶縁部材（81）および線間絶縁部材（80）のうち一方（具体的には要求絶縁性能が低い方）において絶縁性能が過剰となることを抑制することができる。これにより、第１相間絶縁部材（81）の絶縁性能と線間絶縁部材（80）の絶縁性能とを適切に設計することができる。 In the above configuration, the insulation performance of the first phase insulating member (81) and the insulation performance of the line insulating member (80) are made different from each other, so that the insulation performance of the first phase insulating member (81) is different from that of the first phase insulating member (81). It is possible to prevent the insulation performance from becoming excessive in one of the interphase insulation member (81) and the line insulation member (80) (specifically, the one having the lower required insulation performance). Thereby, the insulation performance of the first phase inter-phase insulating member (81) and the insulation performance of the line-line insulating member (80) can be appropriately designed.

また、第１相間絶縁部材（81）の絶縁性能と線間絶縁部材（80）の絶縁性能とを適切に設計することができるので、第１相間絶縁部材（81）の厚みおよび線間絶縁部材（80）の厚みを適切に設計することができる。これにより、スロット（53）内における巻線（60）の占積率を向上させることができるので、電動機（20）のコイルエンド部を小さくすることができる。その結果、電動機（20）の軸方向長さを短くすることができ、電動機（20）を小型化することができる。 Further, since the insulation performance of the first phase inter-phase insulating member (81) and the insulation performance of the line-line insulating member (80) can be appropriately designed, the thickness of the first-phase inter-phase insulating member (81) and the line-line insulating member can be appropriately designed. The thickness of (80) can be designed appropriately. As a result, the space factor of the winding (60) in the slot (53) can be improved, so that the coil end portion of the electric motor (20) can be made smaller. As a result, the axial length of the electric motor (20) can be shortened, and the electric motor (20) can be miniaturized.

また、実施形態１の変形例１の電動機（20）では、共通スロット（54）を通過する第２巻線（62）の数は、２つ以上である。共通スロット（54）を通過する２つ以上の第２巻線（62）のうち少なくとも２つに印加される電圧は、それぞれ異なる位相を有する。共通スロット（54）には、共通スロット（54）を通過する２つ以上の第２巻線（62）の間を電気的に絶縁する少なくとも１つの第２相間絶縁部材（82）が設けられる。第２相間絶縁部材（82）の絶縁性能は、線間絶縁部材（80）の絶縁性能および第１相間絶縁部材（81）の絶縁性能と異なる。 Further, in the electric motor (20) of the first modification of the first embodiment, the number of the second windings (62) passing through the common slot (54) is two or more. The voltages applied to at least two of the two or more second windings (62) passing through the common slot (54) have different phases. The common slot (54) is provided with at least one second phase inter-phase insulating member (82) that electrically insulates between two or more second windings (62) passing through the common slot (54). The insulation performance of the second-phase inter-phase insulating member (82) is different from the insulation performance of the inter-wire insulating member (80) and the first-phase inter-phase insulating member (81).

上記の構成では、第２相間絶縁部材（82）の絶縁性能と線間絶縁部材（80）の絶縁性能と第１相間絶縁部材（81）とを異ならせることにより、これらの絶縁性能が同一である場合よりも、線間絶縁部材（80）と第１相間絶縁部材（81）と第２相間絶縁部材（82）のうち２つ（具体的には要求絶縁性能が最も高い絶縁部材を除く２つの絶縁部材）において絶縁性能が過剰となることを抑制することができる。これにより、第１相間絶縁部材（81）の絶縁性能と第２相間絶縁部材（82）の絶縁性能と線間絶縁部材（80）の絶縁性能とを適切に設計することができる。 In the above configuration, the insulation performance of the second phase insulation member (82), the insulation performance of the line insulation member (80), and the insulation performance of the first phase insulation member (81) are different, so that these insulation performances are the same. Two of the line insulation member (80), the first phase insulation member (81), and the second phase insulation member (82) (specifically, excluding the insulation member having the highest required insulation performance 2) than in some cases. It is possible to prevent the insulation performance from becoming excessive in one insulating member). As a result, the insulation performance of the first-phase insulation member (81), the insulation performance of the second-phase insulation member (82), and the insulation performance of the line insulation member (80) can be appropriately designed.

また、第１相間絶縁部材（81）の絶縁性能と第２相間絶縁部材（82）の絶縁性能と線間絶縁部材（80）の絶縁性能とを適切に設計することができるので、線間絶縁部材（80）の厚みと第２相間絶縁部材（82）の厚みと絶縁部材（70）の厚みを適切に設計することができる。これにより、スロット（53）内における巻線（60）の占積率を向上させることができるので、電動機（20）のコイルエンド部を小さくすることができる。その結果、電動機（20）の軸方向長さを短くすることができ、電動機（20）を小型化することができる。 Further, since the insulation performance of the first phase insulation member (81), the insulation performance of the second phase insulation member (82), and the insulation performance of the line insulation member (80) can be appropriately designed, the line insulation can be appropriately designed. The thickness of the member (80), the thickness of the second-phase interphase insulating member (82), and the thickness of the insulating member (70) can be appropriately designed. As a result, the space factor of the winding (60) in the slot (53) can be improved, so that the coil end portion of the electric motor (20) can be made smaller. As a result, the axial length of the electric motor (20) can be shortened, and the electric motor (20) can be miniaturized.

なお、実施形態１の変形例１による電動機（20）において、第１相間絶縁部材（81）および第２相間絶縁部材（82）の一方が省略されてもよい。また、共通スロット（54）を通過する第１巻線（61）の数および共通スロット（54）を通過する第２巻線（62）の数のうち一方の数が１つであってもよい。 In the electric motor (20) according to the first modification of the first embodiment, one of the first interphase insulating member (81) and the second interphase insulating member (82) may be omitted. Further, one of the number of the first windings (61) passing through the common slot (54) and the number of the second windings (62) passing through the common slot (54) may be one. ..

（実施形態１の変形例２）
図５は、実施形態１の変形例２による電動機（20）の要部を例示する。図５に示すように、実施形態１の変形例２では、複数の巻線（60）は、集中巻により複数のティース（52）に巻回される。 (Modification 2 of Embodiment 1)
FIG. 5 illustrates a main part of the electric motor (20) according to the second modification of the first embodiment. As shown in FIG. 5, in the second modification of the first embodiment, the plurality of windings (60) are wound around the plurality of teeth (52) by the concentrated winding.

実施形態１の変形例２では、複数のティース（52）のうち共通スロット（54）を構成する２つのティース（52）の各々には、第１巻線（61）と第２巻線（62）とが集中巻により巻回される。 In the second modification of the first embodiment, the first winding (61) and the second winding (62) are provided in each of the two teeth (52) constituting the common slot (54) among the plurality of teeth (52). ) And are wound by concentrated winding.

共通スロット（54）を構成する２つのティース（52）の各々に巻回される第１巻線（61）に印加される電圧は、それぞれ異なる位相を有する。例えば、２つのティース（52）の各々に巻回された第１巻線（61）のうち１つの第１巻線（61）は、Ｕ相の駆動巻線を構成し、もう１つの第１巻線（61）は、Ｖ相の駆動巻線を構成する。 The voltage applied to the first winding (61) wound around each of the two teeth (52) constituting the common slot (54) has a different phase. For example, one of the first windings (61) wound around each of the two teeth (52) constitutes a U-phase drive winding and the other first. The winding (61) constitutes a V-phase drive winding.

共通スロット（54）を構成する２つのティース（52）の各々に巻回される第２巻線（62）に印加される電圧は、それぞれ異なる位相を有する。例えば、２つのティース（52）の各々に巻回された第２巻線（62）のうち１つの第２巻線（62）は、Ｕ相の支持巻線を構成し、もう１つの第２巻線（62）は、Ｖ相の支持巻線を構成する。 The voltage applied to the second winding (62) wound around each of the two teeth (52) constituting the common slot (54) has a different phase. For example, one of the second windings (62) wound around each of the two teeth (52), the second winding (62), constitutes a U-phase support winding and the other second. The winding (62) constitutes a V-phase support winding.

共通スロット（54）を構成する２つのティース（52）の各々に巻回される第１巻線（61）の間の絶縁距離（D1）は、共通スロット（54）を構成する２つのティース（52）の各々に巻回される第２巻線（62）の間の絶縁距離（D2）と異なる。具体的には、第１巻線（61）の間の絶縁距離（D1）および第２巻線（62）の間の絶縁距離（D2）のうち要求絶縁性能が高いほうの絶縁距離が第１巻線（61）の間の絶縁距離（D1）および第２巻線（62）の間の絶縁距離（D2）のうち要求絶縁性能が低いほうの絶縁距離よりも短い。 The insulation distance (D1) between the first windings (61) wound around each of the two teeth (52) that make up the common slot (54) is the two teeth (D1) that make up the common slot (54). It differs from the insulation distance (D2) between the second windings (62) wound around each of 52). Specifically, the insulation distance (D1) between the first windings (61) and the insulation distance (D2) between the second windings (62), whichever has the higher required insulation performance, is the first. The insulation distance between the windings (61) (D1) and the insulation distance between the second windings (62) (D2) is shorter than the insulation distance with the lower required insulation performance.

この例では、２つのティース（52）の各々に巻回される第１巻線（61）の間の要求絶縁性能は、２つのティース（52）の各々に巻回される第２巻線（62）の間の要求絶縁性能よりも高い。したがって、第１巻線（61）の間の絶縁距離（D1）は、第２巻線（62）の間の絶縁距離（D2）よりも長い。 In this example, the required insulation performance between the first winding (61) wound around each of the two teeth (52) is the second winding (61) wound around each of the two teeth (52). 62) Higher than the required insulation performance. Therefore, the insulation distance (D1) between the first windings (61) is longer than the insulation distance (D2) between the second windings (62).

なお、実施形態１の変形例２による電動機（20）のその他の構成は、図１〜図３に示した実施形態１による電動機（20）の構成と同様である。 The other configurations of the electric motor (20) according to the second modification of the first embodiment are the same as the configurations of the electric motor (20) according to the first embodiment shown in FIGS. 1 to 3.

〔実施形態１の変形例２の効果〕
以上のように、実施形態１の変形例２の電動機（20）では、複数のティース（52）のうち共通スロット（54）を構成する２つのティース（52）の各々には、第１巻線（61）と第２巻線（62）とが集中巻により巻回される。共通スロット（54）を構成する２つのティース（52）の各々に巻回される第１巻線（61）に印加される電圧は、それぞれ異なる位相を有する。共通スロット（54）を構成する２つのティース（52）の各々に巻回される第２巻線（62）に印加される電圧は、それぞれ異なる位相を有する。共通スロット（54）を構成する２つのティース（52）の各々に巻回される第１巻線（61）の間の絶縁距離（D1）は、共通スロット（54）を構成する２つのティース（52）の各々に巻回される第２巻線（62）の間の絶縁距離（D2）と異なる。 [Effect of Modification 2 of Embodiment 1]
As described above, in the electric motor (20) of the second modification of the first embodiment, the first winding is wound on each of the two teeth (52) constituting the common slot (54) among the plurality of teeth (52). (61) and the second winding (62) are wound by a concentrated winding. The voltage applied to the first winding (61) wound around each of the two teeth (52) constituting the common slot (54) has a different phase. The voltage applied to the second winding (62) wound around each of the two teeth (52) constituting the common slot (54) has a different phase. The insulation distance (D1) between the first windings (61) wound around each of the two teeth (52) that make up the common slot (54) is the two teeth (D1) that make up the common slot (54). It differs from the insulation distance (D2) between the second windings (62) wound around each of 52).

上記の構成では、共通スロット（54）において第１巻線（61）の間の絶縁距離（D1）と第２巻線（62）の間の絶縁距離（D2）とを互いに異ならせることにより、これらの絶縁距離が互いに同一である場合よりも、第１巻線（61）の間の絶縁距離（D1）および第２巻線（62）の間の絶縁距離（D2）のうち一方（具体的には要求される絶縁距離が短い方）が過剰となることを抑制することができる。これにより、第１巻線（61）の間の絶縁距離（D1）と第２巻線（62）の間の絶縁距離（D2）とを適切に設計することができる。 In the above configuration, the insulation distance (D1) between the first windings (61) and the insulation distance (D2) between the second windings (62) in the common slot (54) are made different from each other. One of the insulation distances (D1) between the first windings (61) and the insulation distances (D2) between the second windings (62) (specifically) than when these insulation distances are the same as each other. The shorter insulation distance is required) can be prevented from becoming excessive. Thereby, the insulation distance (D1) between the first winding (61) and the insulation distance (D2) between the second winding (62) can be appropriately designed.

また、第１巻線（61）の間の絶縁距離（D1）と第２巻線（62）の間の絶縁距離（D2）とを適切に設計することができるので、スロット（53）内における巻線（60）の占積率を向上させることができる。これにより、電動機（20）のコイルエンド部を小さくすることができる。その結果、電動機（20）の軸方向長さを短くすることができ、電動機（20）を小型化することができる。 Further, since the insulation distance (D1) between the first winding (61) and the insulation distance (D2) between the second winding (62) can be appropriately designed, the insulation distance (D2) in the slot (53) can be appropriately designed. The space factor of the winding (60) can be improved. As a result, the coil end portion of the electric motor (20) can be made smaller. As a result, the axial length of the electric motor (20) can be shortened, and the electric motor (20) can be miniaturized.

（実施形態２）
図６は、実施形態２による電動機（20）の要部を例示する。 (Embodiment 2)
FIG. 6 illustrates a main part of the electric motor (20) according to the second embodiment.

実施形態２では、複数のスロット（53）は、第１スロット（55）と、第２スロット（56）とを含む。第１スロット（55）には、第１巻線（61）が通過し、且つ、第２巻線（62）が通過しない。第２スロット（56）には、第２巻線（62）が通過し、且つ、第１巻線（61）が通過しない。 In the second embodiment, the plurality of slots (53) include a first slot (55) and a second slot (56). The first winding (61) passes through the first slot (55), and the second winding (62) does not pass through. The second winding (62) passes through the second slot (56), and the first winding (61) does not pass through.

実施形態２では、第１スロット（55）に設けられる絶縁部材（70）の絶縁性能は、第２スロット（56）に設けられる絶縁部材（70）の絶縁性能と異なる。具体的には、第１スロット（55）に設けられる絶縁部材（70）および第２スロット（56）に設けられる絶縁部材（70）のうち要求絶縁性能が高いほうの絶縁部材（70）の絶縁性能が第１スロット（55）に設けられる絶縁部材（70）および第２スロット（56）に設けられる絶縁部材（70）のうち要求絶縁性能が低いほうの絶縁部材（70）の絶縁性能よりも高い。 In the second embodiment, the insulating performance of the insulating member (70) provided in the first slot (55) is different from the insulating performance of the insulating member (70) provided in the second slot (56). Specifically, the insulation of the insulating member (70) provided in the first slot (55) and the insulating member (70) provided in the second slot (56), whichever has the higher required insulation performance, is insulated. The performance is higher than the insulation performance of the insulating member (70) provided in the first slot (55) and the insulating member (70) provided in the second slot (56), whichever has the lower required insulating performance. high.

この例では、第１巻線（61）に印加される電圧は、第２巻線（62）に印加される電圧よりも高い。そのため、第１巻線（61）の要求絶縁性能は、第２巻線（62）の要求絶縁性能よりも高く、第１巻線（61）が通過する第１スロット（55）に設けられる絶縁部材（70）の要求絶縁性能は、第２巻線（62）が通過する第２スロット（56）に設けられる絶縁部材（70）の要求絶縁性能よりも高い。したがって、第１スロット（55）に設けられる絶縁部材（70）の絶縁性能は、第２スロット（56）に設けられる絶縁部材（70）の絶縁性能よりも高い。 In this example, the voltage applied to the first winding (61) is higher than the voltage applied to the second winding (62). Therefore, the required insulation performance of the first winding (61) is higher than the required insulation performance of the second winding (62), and the insulation provided in the first slot (55) through which the first winding (61) passes. The required insulation performance of the member (70) is higher than the required insulation performance of the insulating member (70) provided in the second slot (56) through which the second winding (62) passes. Therefore, the insulating performance of the insulating member (70) provided in the first slot (55) is higher than the insulating performance of the insulating member (70) provided in the second slot (56).

図６の例では、第１スロット（55）に設けられる絶縁部材（70）の厚み（L1）は、第２スロット（56）に設けられる絶縁部材（70）の厚み（L2）よりも厚い。なお、この例では、第１スロット（55）に設けられる絶縁部材（70）を構成する絶縁材料は、第２スロット（56）に設けられる絶縁部材（70）を構成する絶縁材料と同一である。このように、絶縁部材（70）を厚くすることにより、その絶縁部材（70）における絶縁性能（例えば絶縁抵抗）を高くすることができる。 In the example of FIG. 6, the thickness (L1) of the insulating member (70) provided in the first slot (55) is thicker than the thickness (L2) of the insulating member (70) provided in the second slot (56). In this example, the insulating material constituting the insulating member (70) provided in the first slot (55) is the same as the insulating material constituting the insulating member (70) provided in the second slot (56). .. By making the insulating member (70) thicker in this way, the insulating performance (for example, insulating resistance) of the insulating member (70) can be increased.

〔実施形態２の効果〕
以上のように、実施形態２の電動機（20）では、複数のスロット（53）は、第１巻線（61）が通過し且つ第２巻線（62）が通過しない第１スロット（55）と、第２巻線（62）が通過し且つ第１巻線（61）が通過しない第２スロット（56）とを含む。複数の絶縁部材（70）のうち第１スロット（55）に設けられる絶縁部材（70）の絶縁性能は、複数の絶縁部材（70）のうち第２スロット（56）に設けられる絶縁部材（70）の絶縁性能と異なる。 [Effect of Embodiment 2]
As described above, in the electric motor (20) of the second embodiment, the plurality of slots (53) are the first slot (55) through which the first winding (61) passes and the second winding (62) does not pass. And a second slot (56) through which the second winding (62) passes and the first winding (61) does not pass. The insulation performance of the insulating member (70) provided in the first slot (55) of the plurality of insulating members (70) is such that the insulating member (70) provided in the second slot (56) of the plurality of insulating members (70) has an insulating performance. ) Is different from the insulation performance.

上記の構成では、第１スロット（55）に設けられる絶縁部材（70）の絶縁性能と第２スロット（56）に設けられる絶縁部材（70）の絶縁性能とを互いに異ならせることにより、これらの絶縁性能が互いに同一である場合よりも、第１スロット（55）に設けられる絶縁部材（70）および第２スロット（56）に設けられる絶縁部材（70）のうち一方（具体的には要求絶縁性能が低い方）において絶縁性能が過剰となることを抑制することができる。これにより、第１スロット（55）に設けられる絶縁部材（70）の絶縁性能と第２スロット（56）に設けられる絶縁部材（70）の絶縁性能とを適切に設計することができる。 In the above configuration, the insulating performance of the insulating member (70) provided in the first slot (55) and the insulating performance of the insulating member (70) provided in the second slot (56) are made different from each other. One of the insulating member (70) provided in the first slot (55) and the insulating member (70) provided in the second slot (56) (specifically, required insulation) than when the insulating performance is the same as each other. It is possible to prevent the insulation performance from becoming excessive in the case of the lower performance). Thereby, the insulation performance of the insulating member (70) provided in the first slot (55) and the insulating performance of the insulating member (70) provided in the second slot (56) can be appropriately designed.

（実施形態３）
図７は、実施形態３による電動機（20）の要部を例示する。 (Embodiment 3)
FIG. 7 illustrates a main part of the electric motor (20) according to the third embodiment.

実施形態３では、固定子コア（50）と第１巻線（61）のコイルエンド部（61e）との間の絶縁距離（D3）は、固定子コア（50）と第２巻線（62）のコイルエンド部（62e）との間の絶縁距離（D4）と異なる。具体的には、固定子コア（50）と第１巻線（61）のコイルエンド部（61e）との間の絶縁距離（D3）および固定子コア（50）と第２巻線（62）のコイルエンド部（62e）との間の絶縁距離（D4）のうち要求絶縁性能が高いほうの絶縁距離が固定子コア（50）と第１巻線（61）のコイルエンド部（61e）との間の絶縁距離（D3）および固定子コア（50）と第２巻線（62）のコイルエンド部（62e）との間の絶縁距離（D4）のうち要求絶縁性能が低いほうの絶縁距離よりも長い。 In the third embodiment, the insulation distance (D3) between the stator core (50) and the coil end portion (61e) of the first winding (61) is the stator core (50) and the second winding (62). ) Is different from the insulation distance (D4) from the coil end (62e). Specifically, the insulation distance (D3) between the stator core (50) and the coil end portion (61e) of the first winding (61) and the stator core (50) and the second winding (62). Of the insulation distances (D4) between the coil end portion (62e) and the coil end portion (D4), the insulation distance with the higher required insulation performance is the stator core (50) and the coil end portion (61e) of the first winding (61). The insulation distance between (D3) and the insulation distance (D4) between the stator core (50) and the coil end (62e) of the second winding (62), whichever has the lower required insulation performance. Longer than.

この例では、固定子コア（50）と第１巻線（61）のコイルエンド部（61e）との間の要求絶縁性能は、固定子コア（50）と第２巻線（62）のコイルエンド部（62e）との間の要求絶縁性能よりも高い。したがって、固定子コア（50）と第１巻線（61）のコイルエンド部（61e）との間の絶縁距離（D3）は、固定子コア（50）と第２巻線（62）のコイルエンド部（62e）との間の絶縁距離（D4）よりも長い。 In this example, the required insulation performance between the stator core (50) and the coil end (61e) of the first winding (61) is the coil of the stator core (50) and the second winding (62). Higher than the required insulation performance with the end (62e). Therefore, the insulation distance (D3) between the stator core (50) and the coil end (61e) of the first winding (61) is the coil of the stator core (50) and the second winding (62). Longer than the insulation distance (D4) from the end (62e).

また、実施形態３では、固定子コア（50）と第１巻線（61）のコイルエンド部（61e）との間および固定子コア（50）と第２巻線（62）のコイルエンド部（62e）との間に、コイルエンド絶縁部材（90）が設けられる。コイルエンド絶縁部材（90）は、絶縁材料で構成される。例えば、コイルエンド絶縁部材（90）は、射出成形により固定子コア（50）と第１巻線（61）のコイルエンド部（61e）との間（または第２巻線（62）のコイルエンド部（62e）との間）に形成される。なお、コイルエンド絶縁部材（90）は、絶縁部材（70）と一体に形成されてもよい。 Further, in the third embodiment, between the stator core (50) and the coil end portion (61e) of the first winding (61) and the coil end portion of the stator core (50) and the second winding (62). A coil end insulating member (90) is provided between (62e) and the coil end insulating member (90). The coil end insulating member (90) is made of an insulating material. For example, the coil end insulating member (90) is injection molded between the stator core (50) and the coil end portion (61e) of the first winding (61) (or the coil end of the second winding (62)). Formed in part (between part (62e)). The coil end insulating member (90) may be integrally formed with the insulating member (70).

なお、実施形態３による電動機（20）のその他の構成は、実施形態２による電動機（20）の構成と同様である。 The other configurations of the electric motor (20) according to the third embodiment are the same as the configurations of the electric motor (20) according to the second embodiment.

〔実施形態３の効果〕
実施形態３の電動機（20）では、固定子コア（50）と第１巻線（61）のコイルエンド部（61e）との間の絶縁距離（D3）は、固定子コア（50）と第２巻線（62）のコイルエンド部（62e）との間の絶縁距離（D4）と異なる。 [Effect of Embodiment 3]
In the electric motor (20) of the third embodiment, the insulation distance (D3) between the stator core (50) and the coil end portion (61e) of the first winding (61) is different from that of the stator core (50). It differs from the insulation distance (D4) between the two windings (62) and the coil end (62e).

上記の構成では、固定子コア（50）と第１巻線（61）のコイルエンド部（61e）との間の絶縁距離（D3）と固定子コア（50）と第２巻線（62）のコイルエンド部（62e）との間の絶縁距離（D4）とを互いに異ならせることにより、これらの絶縁距離が互いに同一である場合よりも、固定子コア（50）と第１巻線（61）のコイルエンド部（61e）との間の絶縁距離（D3）および固定子コア（50）と第２巻線（62）のコイルエンド部（62e）との間の絶縁距離（D4）のうち一方（具体的には要求される絶縁距離が短い方）が過剰となることを抑制することができる。これにより、固定子コア（50）と第１巻線（61）のコイルエンド部（61e）との間の絶縁距離（D3）と固定子コア（50）と第２巻線（62）のコイルエンド部（62e）との間の絶縁距離（D4）とを適切に設計することができる。 In the above configuration, the insulation distance (D3) between the stator core (50) and the coil end (61e) of the first winding (61) and the stator core (50) and the second winding (62). By making the insulation distances (D4) between the coil ends (62e) and the coil ends (62e) different from each other, the stator core (50) and the first winding (61) are more than when these insulation distances are the same as each other. ) Of the insulation distance (D3) between the coil end (61e) and the insulator core (50) and the coil end (62e) of the second winding (62) (D4). On the other hand (specifically, the one with the shorter required insulation distance) can be suppressed from becoming excessive. As a result, the insulation distance (D3) between the stator core (50) and the coil end portion (61e) of the first winding (61) and the coil of the stator core (50) and the second winding (62) The insulation distance (D4) from the end portion (62e) can be properly designed.

（その他の実施形態）
以上の説明では、第１巻線部が駆動巻線部であり、第２巻線部が支持巻線部である場合を例に挙げたが、第１巻線部は、支持巻線部であってもよく、第２巻線部は、駆動巻線部であってもよい。言い換えると、第１巻線（61）が駆動巻線であり、第２巻線（62）が支持巻線である場合を例に挙げたが、第１巻線（61）は、支持巻線であってもよく、第２巻線（62）は、支持巻線であってもよい。 (Other embodiments)
In the above description, the case where the first winding portion is the drive winding portion and the second winding portion is the support winding portion has been described as an example, but the first winding portion is the support winding portion. The second winding portion may be a drive winding portion. In other words, the case where the first winding (61) is the drive winding and the second winding (62) is the support winding is taken as an example, but the first winding (61) is the support winding. The second winding (62) may be a support winding.

また、実施形態１による電動機（20）において、実施形態３のように、固定子コア（50）と第１巻線（61）のコイルエンド部（61e）との間の絶縁距離（D3）が、固定子コア（50）と第２巻線（62）のコイルエンド部（62e）との間の絶縁距離（D4）と異なっていてもよい。実施形態１の変形例１、実施形態１の変形例２についても同様である。 Further, in the electric motor (20) according to the first embodiment, as in the third embodiment, the insulation distance (D3) between the stator core (50) and the coil end portion (61e) of the first winding (61) is increased. , The insulation distance (D4) between the stator core (50) and the coil end (62e) of the second winding (62) may be different. The same applies to the first modification of the first embodiment and the second modification of the first embodiment.

また、以上の説明では、電動機（20）がコンシクエントポール型のベアリングレスモータ（埋込磁石型のベアングレスモータ）である場合を例に挙げたが、電動機（20）は、他のタイプのベアリングレスモータであってもよい。例えば、電動機（20）は、表面磁石型、インセット型、ＢＰＭ（Buried Permanent Magnet）型、順突極型、同期リラクタンス型、スイッチトリラクタンス型、誘導型のいずれかのタイプのベアリングレスモータであってもよい。 Further, in the above description, the case where the electric motor (20) is a concave pole type bearingless motor (embedded magnet type bearless motor) is taken as an example, but the electric motor (20) is of another type. It may be a bearingless motor. For example, the electric motor (20) is a bearingless motor of one of the following types: surface magnet type, inset type, BPM (Buried Permanent Magnet) type, forward reluctance type, synchronous reluctance type, switched reluctance type, and induction type. There may be.

また、実施形態および変形例を説明したが、特許請求の範囲の趣旨および範囲から逸脱することなく、形態や詳細の多様な変更が可能なことが理解されるであろう。また、以上の実施形態および変形例は、本開示の対象の機能を損なわない限り、適宜組み合わせたり置換したりしてもよい。 In addition, although the embodiments and modifications have been described, it will be understood that various modifications of the forms and details are possible without departing from the spirit and scope of the claims. In addition, the above embodiments and modifications may be appropriately combined or replaced as long as they do not impair the functions of the present disclosure.

以上説明したように、本開示は、電動機として有用である。 As described above, the present disclosure is useful as an electric motor.

１０ターボ圧縮機
１１ケーシング
１２駆動軸
１３インペラ
２０電動機
３０回転子
４０固定子
５０固定子コア
５１バックヨーク
５２ティース
５３スロット
５４共通スロット
５５第１スロット
５６第２スロット
６０巻線
６１第１巻線
６１ｅコイルエンド部
６２第２巻線
６２ｅコイルエンド部
７０絶縁部材
７０ａ第１部分
７０ｂ第２部分
８０線間絶縁部材
８１第１相間絶縁部材
８２第２相間絶縁部材
９０コイルエンド絶縁部材 10 Turbo compressor 11 Casing 12 Drive shaft 13 Impeller 20 Electric motor 30 Rotor 40 Stator 50 Stator core 51 Back yoke 52 Teeth 53 Slot 54 Common slot 55 1st slot 56 2nd slot 60 Winding 61 1st winding 61e Coil end 62 Second winding 62e Coil end 70 Insulation member 70a First part 70b Second part 80 Line insulation member 81 First phase insulation member 82 Second phase insulation member 90 Coil end insulation member

Claims

Rotor (30) and
Equipped with a stator (40),
The stator (40)
A stator core (50) having a back yoke (51) formed in an annular shape and a plurality of teeth (52) provided on the inner circumference of the back yoke (51).
A plurality of windings (60) routed to pass through a plurality of slots (53) formed between the plurality of teeth (52), respectively.
Each of the inner walls of the plurality of slots (53) has a plurality of insulating members (70) that electrically insulate the stator core (50) and the plurality of windings (60).
The plurality of windings (60) have a voltage different from that of at least one first winding (61) included in the first winding portion to which the voltage is applied and the voltage applied to the first winding portion. Includes at least one second winding (62) included in the second winding portion to which
The plurality of insulating members (70) include the insulating performance of a portion that electrically insulates the stator core (50) and the first winding (61), the stator core (50), and the second volume. An electric motor characterized in that the insulation performance of the part that electrically insulates the wire (62) is different from each other.

In claim 1,
The plurality of slots (53) include a common slot (54) through which the first winding (61) and the second winding (62) pass.
Of the plurality of insulating members (70), the insulating member (70) provided in the common slot (54) electrically insulates the stator core (50) and the first winding (61). It has one portion (70a) and a second portion (70b) that electrically insulates the stator core (50) and the second winding (62).
An electric motor characterized in that the insulation performance of the first portion (70a) is different from the insulation performance of the second portion (70b).

In claim 2,
The common slot (54) is provided with an interline insulating member (80) that electrically insulates the first winding (61) and the second winding (62).
The insulation performance of the line-to-line insulating member (80) provided in the common slot (54) is different from the insulation performance of the insulating member (70) provided in the common slot (54) among the plurality of insulating members (70). An electric motor characterized by that.

In claim 3,
The number of the first windings (61) passing through the common slot (54) is two or more.
The voltages applied to at least two of the two or more first windings (61) passing through the common slot (54) have different phases.
The common slot (54) is provided with at least one first-phase inter-phase insulating member (81) that electrically insulates between two or more first windings (61) passing through the common slot (54). Be,
An electric motor characterized in that the insulation performance of the first phase inter-phase insulating member (81) is different from the insulation performance of the line-line insulating member (80).

In claim 4,
The number of the second windings (62) passing through the common slot (54) is two or more.
The voltages applied to at least two of the two or more second windings (62) passing through the common slot (54) have different phases.
The common slot (54) is provided with at least one second-phase interphase insulating member (82) that electrically insulates between two or more second windings (62) passing through the common slot (54). Be,
An electric motor characterized in that the insulation performance of the second-phase interphase insulating member (82) is different from the insulation performance of the line-line insulating member (80) and the first-phase interphase insulating member (81).

In claim 2,
The first winding (61) and the second winding (62) are centrally wound around each of the two teeth (52) constituting the common slot (54) among the plurality of teeth (52). Wound by
The voltage applied to the first winding (61) wound around each of the two teeth (52) constituting the common slot (54) has a different phase.
The voltage applied to the second winding (62) wound around each of the two teeth (52) constituting the common slot (54) has a different phase.
The insulation distance (D1) between the first windings (61) wound around each of the two teeth (52) forming the common slot (54) is the two forming the common slot (54). An electric motor characterized in that it differs from the insulation distance (D2) between the second windings (62) wound around each of the teeth (52).

In claim 1,
The plurality of slots (53) pass through the first slot (55) through which the first winding (61) passes and the second winding (62) does not pass, and the second winding (62). And includes a second slot (56) through which the first winding (61) does not pass.
The insulation performance of the insulating member (70) provided in the first slot (55) of the plurality of insulating members (70) is provided in the second slot (56) of the plurality of insulating members (70). An electric motor characterized by being different from the insulation performance of the insulating member (70).

In any one of claims 1 to 7,
The insulation distance (D3) between the stator core (50) and the coil end portion (61e) of the first winding (61) is determined by the stator core (50) and the second winding (62). An electric motor characterized by being different from the insulation distance (D4) from the coil end portion (62e) of.

In any one of claims 1 to 8,
One of the first winding portion and the second winding portion is a drive winding portion that generates an electromagnetic force for rotationally driving the rotor (30) by energization.
The other of the first winding portion and the second winding portion is a support winding portion that generates an electromagnetic force for non-contactly supporting the rotor (30) by energization. ..

In claim 9.
The voltage applied to the drive winding portion is higher than the voltage applied to the support winding portion.
In the plurality of insulating members (70), the insulating performance of a portion that electrically insulates the stator core (50) and the winding (60) included in the drive winding portion is the stator core (50). An electric motor characterized in that it has higher insulation performance than a portion that electrically insulates the winding (60) included in the support winding portion.