Wound rotor synchronous motor for vehicle

Patent metadata

Field	Value
Publication number	US-10243436-B2
Application number	US-201615333278-A
Country	US
Kind code	B2
Filing date	Oct 25, 2016
Priority date	Jun 3, 2016
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A Wound Rotor Synchronous Motor (WRSM) includes a rotor body that is rotatably installed at a predetermined gap within a stator and a rotor coil that is wound at a plurality of rotor teeth. The WRSM includes: bobbins that are each disposed at both sides of a shaft direction of the rotor body so as to support the rotor coil and that are fixed to the rotor body by the rotor coil; a wedge member that is inserted in a shaft direction between rotor teeth of the rotor body so as to protrude to the outside of both ends of the rotor body, the wedge member supporting the rotor coil; and end coil covers that enclose a protruded portion of the wedge member at both sides of the shaft direction of the rotor body and that are each mounted at the bobbins.

First claim

What is claimed is:

1. A Wound Rotor Synchronous Motor (WRSM) having a rotor body that is rotatably installed at a predetermined gap within a stator, and a rotor coil that is wound at a plurality of rotor teeth, the WRSM comprising:
bobbins each disposed at both sides of a shaft direction of the rotor body and configured to support the rotor coil and be fixed to the rotor body by the rotor coil;
a wedge member inserted in a shaft direction between the rotor teeth of the rotor body so as to protrude to the outside of both ends of the rotor body, the wedge member supporting the rotor coil; and
end coil covers that enclose a protruded portion of the wedge member at both sides of the shaft direction of the rotor body and that are each mounted at the bobbins,
wherein the bobbins form a plurality of first connection passages that are opened in a shaft direction of the rotor body, and
the end coil covers form at least one second connection passage that is connected with a corresponding one of the first connection passages.

2. The WRSM of claim 1 , wherein the rotor body is formed in a non-molding type open structure by the bobbins and the end coil covers.

3. The WRSM of claim 1 , wherein the first and second connection passages are connected between the rotor teeth in which the rotor coil is wound in the rotor body.

4. The WRSM of claim 1 , wherein the bobbins comprise a plurality of coil supports that support the rotor teeth and that radially partition the plurality of first connection passages.

5. The WRSM of claim 4 , wherein the end coil covers comprise a plurality of ribs that radially partition the second connection passage.

6. The WRSM of claim 5 , wherein the protruded portion of the wedge member penetrates the first connection passages of the bobbins and supports the second connection passage of the end coil covers.

7. A Wound Rotor Synchronous Motor (WRSM) having a rotor body that is rotatably installed at a predetermined gap within a stator, and a rotor coil that is wound at a plurality of rotor teeth, the WRSM comprising:
bobbins each disposed at both sides of a shaft direction of the rotor body and configured to support the rotor coil and be fixed to the rotor body by the rotor coil;
a wedge member inserted in the shaft direction between the rotor teeth of the rotor body so as to support the rotor coil; and
end coil covers that are each mounted at the bobbins at both sides of the shaft direction of the rotor body,
wherein the wedge member faces an interior diameter surface of the stator at an end portion of the rotor teeth, is coupled to an end portion of a rotor shoe that is protruded to both sides, and supports both side surfaces and an exterior diameter surface side of the rotor shoe.

8. The WRSM of claim 7 , wherein the wedge member comprises:
a support that is disposed in the shaft direction between the rotor teeth and that forms a hollow in the shaft direction; and
a coupler that is integrally connected with the support and that is coupled to an end portion of both sides of the rotor shoe and that supports both side surfaces and an exterior diameter surface of the rotor shoe.

9. The WRSM of claim 8 , wherein the coupler comprises:
a first portion having a coupling groove coupled to an end portion of both sides of the rotor shoe and that supports both side surfaces of the rotor shoe; and
a second portion that is integrally connected with the first portion and that supports an exterior diameter surface of the rotor shoe.

10. The WRSM of claim 9 , wherein the second portion is located at a gap between an interior diameter surface of the stator and an exterior diameter surface of the rotor shoe.

11. A Wound Rotor Synchronous Motor (WRSM) having a rotor body that is rotatably installed at a predetermined gap within a stator, and a rotor coil that is wound at a plurality of rotor teeth, the WRSM comprising:
bobbins each disposed at both sides of a shaft direction of the rotor body configured to support the rotor coil and be fixed to the rotor body by the rotor coil;
a wedge member inserted in a shaft direction between the rotor teeth of the rotor body so as to protrude to the outside of both ends of the rotor body, the wedge member supporting the rotor coil; and
end coil covers that enclose a protruded portion of the wedge member at both sides of the shaft direction of the rotor body and that are each mounted at the bobbins,
wherein the bobbins form a plurality of first connection passages that are opened in the shaft direction of the rotor body,
the end coil covers form at least one second connection passage that is connected with a corresponding one of the first connection passages, and
the wedge member faces an interior diameter surface of the stator at an end portion of the rotor teeth, is coupled to an end portion of a rotor shoe that is protruded to both sides, and supports both side surfaces and an exterior diameter surface side of the rotor shoe.

12. The WRSM of claim 11 , wherein the wedge member forms a hollow that is connected with a second connection passage of the end coil cover.

13. The WRSM of claim 12 , wherein the wedge member comprises:
a support that is disposed in a shaft direction between the rotor teeth and that forms said hollow; and
a coupler that is integrally connected with the support and coupled to an end portion of both sides of the rotor shoe and that supports both side surfaces and an exterior diameter surface of the rotor shoe.

14. The WRSM of claim 13 , wherein the protruded portion of the wedge member penetrates the first connection passages of the bobbins and supports the second connection passage of the end coil cover through the coupler.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Park Sangjin
• Cho Hyoungjun
• Lee Jungwoo
• Kim Yeonho
• Do Sanghwa
• Kim Ki Nam
• Jang Yongsung

Classifications

• H02K3/527

  applicable to rotors only · CPC title

• H02K19/02 Primary

  Synchronous motors · CPC title

• H02K1/325 Primary

  between salient poles · CPC title

• H02K3/18

  Windings for salient poles · CPC title

• H02K3/24

  with channels or ducts for cooling medium between the conductors · CPC title