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Double-stator rotating electrical machine

A technology of rotating electrical machines and multiple stators, which is applied to synchronous motors with stationary armatures and rotating magnets, electrical components, electromechanical devices, etc., and can solve problems such as motor damage and failure, expensive components, and occupied space

Active Publication Date: 2018-11-23
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This force can be very problematic for the motor and can cause further damage and failure to the motor and / or result in expensive and oversized components

Method used

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  • Double-stator rotating electrical machine
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Examples

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Embodiment Construction

[0021] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which certain embodiments of the invention are shown. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and to describe the present invention The range fully conveys to those skilled in the art. Throughout the specification, like reference numerals refer to like elements.

[0022] Embodiments presented herein relate to multi-stator rotating electrical machines, such as engines and generators, where the inner gap distance is smaller than the outer gap distance. As shown below, this results in better matching of the opposing forces due to the asymmetry in the inner and outer gap distances. As a result, detrimental radial forces appearing on the rotor due to as...

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Abstract

It is provided a multi-stator rotating electrical machine comprising: an inner stator; an outer stator; a rotor provided radially between inner stator and the outer stator; an inner gap distance between the rotor and the inner stator; and an outer gap distance between the rotor and the outer stator. An average of the inner gap distance is between 75 and 80 percent of an average of the outer gap distance.

Description

technical field [0001] The invention relates to a double-stator rotating electric machine. More specifically, in the embodiments presented herein, the average gap distance between the rotor and stator is varied to reduce radial forces on the rotor. Background technique [0002] Dual stator machines are rotating electrical machines that have been extensively studied over the past 20 years due to both high power density and the ability to provide redundant computation. Permanent magnets are commonly used to provide rotor excitation in dual stator motors. [0003] Such a multi-stator electric machine is for example disclosed in WO 2016001495, which provides an electromagnetic motor with radial flux, especially intended to assist power steering in motor vehicles. The engine includes at least two stators surrounding at least one rotor, and an air gap defined between each of the rotors and the surrounding stator. [0004] In FEI ZHAO et al.: "Dual-stator Interior Permanent Magn...

Claims

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Application Information

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IPC IPC(8): H02K16/00H02K16/04
CPCH02K16/00H02K2201/03H02K2213/03H02K16/04H02K1/185H02K1/187H02K21/12
Inventor 陈雯亮J·伊斯兰
Owner ABB (SCHWEIZ) AG