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3-phase permanent magnet motor or generator having variable stator teeth

A technology for generators and motors, which is applied to electric components, magnetic circuit rotating parts, magnetic circuits, etc., can solve problems such as expensive, complex, and increased costs

Inactive Publication Date: 2014-05-21
NIDEC MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although various methods are known in the art to achieve high efficiencies in electric motors or generators, such methods are often complex and / or costly
Similarly, techniques for reducing cogging torque can also be complex and / or expensive

Method used

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  • 3-phase permanent magnet motor or generator having variable stator teeth
  • 3-phase permanent magnet motor or generator having variable stator teeth
  • 3-phase permanent magnet motor or generator having variable stator teeth

Examples

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Embodiment Construction

[0018] The invention allows for many different ways of implementing it. While the drawings show and the description describes certain preferred embodiments of the invention, it should be understood that this disclosure is by way of example only. There is no intention to limit the principles of the invention to the particular embodiments disclosed.

[0019] First refer to figure 1 and 2 , providing an electric motor or generator 10 for use in the machine. The machine may be any of a variety of machine types including, but not limited to, dishwashers; front-loading or front-loading washing machines, including belt-drive washing machines; fans; vehicles such as golf carts and electric bicycles and mopeds; and vehicles such as Sports equipment for exercise bike.

[0020] The motor or generator 10 is preferably a variable speed motor or generator and is preferably capable of changing directions. However, non-reversing and / or fixed speed motors or generators may be provided wit...

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PUM

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Abstract

An electric motor or generator machine is provided. The machine includes a rotor rotatable about an axis, as well as a stator. The stator includes a stator core and wiring wound around the stator core. The stator core includes a plurality of arcuately spaced apart alternating primary teeth and secondary teeth, such that each secondary tooth is spaced between a corresponding pair of primary teeth. The wiring is wound about the primary teeth to form a plurality of coils. The plurality of coils includes an A-phase coil, a B-phase coil, and a C-phase coil. Each of the primary teeth includes a generally radially extending primary arm and a generally arcuately extending primary crown. Each of the primary crowns spans one hundred sixty (160) to two hundred (200) electrical degrees.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 61 / 723,248, filed November 6, 2012, the entire disclosure of which is hereby incorporated by reference. technical field [0003] The present invention generally relates to electric motors and generators. More particularly, the present invention relates to an electric motor or generator comprising a stator core having a plurality of arcuately spaced teeth, wherein the teeth include primary teeth and secondary teeth. Background technique [0004] Those of ordinary skill in the art know that electric motors or generators are commonly used in household appliances such as dishwashers or washing machines, in vehicles such as golf carts, and in sports equipment such as stationary bicycles. Such electric motors or generators typically include a rotor and a stator, where the stator includes a plurality of arcuately spaced teeth and wire wound around the teeth. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/16H02K1/27
CPCH02K21/145H02K29/03H02K1/146H02K1/2746H02K1/276H02K1/278
Inventor K·I·霍曼
Owner NIDEC MOTOR CORP
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