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Rectangular cross-section windings for electrical machine rotors

A technology for motor rotors and windings, applied to windings, electric components, filling planes with attributes, etc., can solve problems such as increasing rotor costs

Inactive Publication Date: 2011-03-23
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Some disadvantages of manufacturing wound rotors in the manner described above are that the prefabricated winding elements 320 are obtained using a labor intensive process and the need to use metal wedges to close the rotor slots 310 also adds to the expense of the rotor

Method used

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  • Rectangular cross-section windings for electrical machine rotors
  • Rectangular cross-section windings for electrical machine rotors
  • Rectangular cross-section windings for electrical machine rotors

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Embodiment Construction

[0065] The following detailed description is merely exemplary in nature and is not intended to limit the invention or the application and uses of the invention. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description.

[0066] Figure 4 is a diagram illustrating a hairpin winding element 400 suitable for use in an exemplary embodiment. Figure 5 is icon Figure 4 A simplified diagram of the shape of the hairpin winding element 400 after the winding element is inserted into a pair of rotor slots and then bent to be incorporated into other hairpin winding elements in other rotor slots according to an exemplary embodiment.

[0067] refer to Figure 4 and 5 , the hairpin winding element 400 includes a first leg 410, a second leg 420, and an end turn 430 joining the first leg to the second leg. Hairpin winding element 400 may be made from a rect...

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PUM

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Abstract

The invention relates to rectangular cross-section windings for electrical machine rotors. An apparatus is provided for an electrical machine rotor. The apparatus comprises a cylinder and a first slot proximate to an edge of the cylinder. The first slot is at least partially closed. The apparatus further comprises a hairpin winding disposed within the first slot.

Description

technical field [0001] The present invention relates generally to electrical machines, and more particularly to an alternating current (AC) electrical machine rotor having windings with rectangular cross-sections. Background technique [0002] In hybrid electric and electric vehicles, high-speed synchronous electric machines are used for traction. In some cases, permanent magnets are used to realize the excitation field of the rotor. In other cases where motor cost or higher rotor flux density is an issue, wound rotors are used. [0003] The wound rotor of a synchronous AC motor includes a direct current (DC) winding on the rotor. This DC winding is called the excitation winding. When supplied with DC current, the excitation windings generate a fixed magnetic field on the periphery of the rotor which interacts with the stator magnetic field of the electric machine to generate mechanical torque during electromechanical power conversion. [0004] Wound rotor synchronous mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/26H02K3/04H02K15/02
CPCG06T11/206H02K3/48G06F3/04817H02K15/063G06F11/3466G06F2201/81G06F11/3664G06F2201/865G06T11/40G06F11/3419G06T11/203G09G5/20
Inventor C·C·斯坦库P·J·萨瓦吉安E·黑奇
Owner GM GLOBAL TECH OPERATIONS LLC