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Fractional slot winding configuration for electric motor

A technology of electric motors and fractional slots, applied in the field of electric motors, can solve problems such as consumption, multiple materials, and complex assembly process of fractional slot windings

Inactive Publication Date: 2011-01-26
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This configuration complicates the assembly process of fractional slot windings, consumes more material than necessary, and increases the overall length of the stator assembly, as each connection must cross 3 concentric rows of conductors and must span a corresponding number of other electrical connections

Method used

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  • Fractional slot winding configuration for electric motor
  • Fractional slot winding configuration for electric motor
  • Fractional slot winding configuration for electric motor

Examples

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Embodiment Construction

[0060] The following detailed description is merely exemplary in nature and is not intended to limit application or use. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief description or the following detailed description.

[0061] As used herein, the term "open stator slot" refers to a stator slot in which the width of the radial opening from the inner cavity of the stator core into the slot when measured in a generally circumferential direction about the central axis of the stator core Basically the same width as the rest of the groove.

[0062] As used herein, the term "semi-closed stator slot" refers to a stator slot in which, when measured in a generally circumferential direction about the central axis of the stator core, the distance from the inner cavity of the stator core to the radial opening in the slot The width is less than the width of the remainder of the slot.

[0063]...

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Abstract

The invention relates to fractional slot winding configuration for electric motors. Methods and apparatus are provided for stator assembly for use with an electric motor assembly. The stator assembly includes, but is not limited to a stator core that has an inner surface and a plurality of stator slots defined in the inner surface. A fractional slot winding having a plurality of conductors is coupled to the stator core. Each stator slot contains a group of the conductors arranged in a radially adjacent configuration. The groups of conductors in each of the stator slots together form a plurality of concentric rings of conductors. The conductors in each mixed group are arranged such that conductors carrying differing phases of electric current are arranged in a radially alternating configuration.

Description

[0001] Statement Regarding Federally Sponsored Research or Development [0002] This invention was made with government support under HEV, PHEV, FCV (DE-FC26-07NT43123) Integrated Traction Drive Systems awarded by the US Department of Energy. The government has certain rights in this invention. technical field [0003] The technical field of the invention relates generally to electric motors, and more particularly to stator assemblies for use with electric motors. Background technique [0004] Advances in technology have led to major changes in car design in recent years. One of these changes involves the complexity and power usage of various electrical systems within automobiles, including alternative fuel vehicles. For example, alternative fuel vehicles (such as hybrids) typically use electromechanical power sources, such as batteries, supercapacitors, and fuel cells, to power an electric traction machine (or electric motor) that drives the wheels, and sometimes have ano...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/16H02K3/12
CPCH02K3/28H02K15/064H02K29/03Y10T29/49009
Inventor R·布利森巴赫D·D·党E·黑奇M·米拉尼D·肖尔J·沃特尔沃思
Owner GM GLOBAL TECH OPERATIONS LLC
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