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An electric power generator comprising two stators and a rotor

A generator and rotor technology, applied in synchronous motors with static armatures and rotating magnets, wind power generation, electromechanical devices, etc., can solve problems such as unoptimized air gaps and improved performance

Pending Publication Date: 2021-06-01
KMN履行信托的临时受托人
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to address the above mentioned disadvantages of not optimizing the air gap to improve the performance and quality of the power generated

Method used

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  • An electric power generator comprising two stators and a rotor
  • An electric power generator comprising two stators and a rotor
  • An electric power generator comprising two stators and a rotor

Examples

Experimental program
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Embodiment Construction

[0040] Figure 1 to Figure 2 An electric power generator (just referred to simply as "generator") 100 according to the invention is shown. The generator 100 has a central hub shaft 102 defining a central axis at its radially inner center and a back iron 104 at its radially outer surface. Generator 100 also has many features common to generators such as bearings, axles, frames, input drives, output wiring etc. which are not shown but those skilled in the art will appreciate that they may form part of the invention.

[0041] The generator 100 has an inner stator 110 , an intermediate rotor 120 and an outer stator 130 . These can be thought of as three concentric "layers" of the generator 100 . The rotor 120 and the stators 110, 130 are coaxial about a central axis. The inner stator 110 is disposed radially inside the rotor 120 , and the inner stator 110 and the rotor 120 are spaced apart by an inner air gap 112 . The outer stator 130 is disposed radially outside of the rotor...

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PUM

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Abstract

An electric power generator comprises a rotor and a plurality of stators arranged coaxially and concentrically about a central axis. There is an inner stator provided radially inwardly of the rotor separated by an inner air gap and an outer stator provided radially outwardly of the rotor separated by an outer air gap. The rotor includes a plurality of magnetic pole structures configured to provide or generate a magnetic field having plurality of magnetic poles. The rotor is not of uniform cross-sectional thickness, wherein: an inner surface of the rotor bulges inwardly at the pole structures, the inner air gap being non-uniform as it is radially shorter at the pole structures and longer in between the pole structures; and an outer surface of the rotor bulges outwardly at the pole structures, the outer air gap being non-uniform as it is radially shorter at the pole structures and longer in between the pole structures.

Description

technical field [0001] The present invention relates to electrical generators, and in particular, the invention relates to electrical generators having a rotor and two stators in a stator-rotor-stator configuration. Background technique [0002] In prior art electrical generators, there is usually a single rotor and a single stator. As we all know, the rotor generates a magnetic field and rotates, and the rotating magnetic field induces a current in the windings provided in the stator which remains stationary. In this configuration, the magnetic field from the rotor is directed to the stator in only one direction, ie the magnetic field from the rotor is directed only radially inwards or only radially outwards to the stator. [0003] The inventors are aware of generators having a twin stator, single rotor configuration. US6297575 discloses a three-layer structure in which the source of the magnetic field from the rotor is located between two stators and is a common source o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/04
CPCH02K16/04H02K2201/03H02K21/12H02K21/14H02K21/22H02K2213/03H02K29/03
Inventor 海部·沃尔特·马克格鲁
Owner KMN履行信托的临时受托人