WO2024235413 - REDUCING STRAY SHAFT CURRENTS IN AN ELECTRIC MACHINE
National phase entry is expected:
Publication Number
WO/2024/235413
Publication Date
21.11.2024
International Application No.
PCT/DK2024/050116
International Filing Date
15.05.2024
Title **
[English]
REDUCING STRAY SHAFT CURRENTS IN AN ELECTRIC MACHINE
[French]
RÉDUCTION DE COURANTS D'ARBRE VAGABONDS DANS UNE MACHINE ÉLECTRIQUE
Applicants **
VESTAS WIND SYSTEMS A/S
Hedeager 42
8200 Aarhus N, DK
Inventors
MONGEAU, Peter
c/o Vestas Wind Systems A/S
Hedeager 42
8200 Aarhus N, DK
Priority Data
63/502,677
17.05.2023
US
PA202370269
31.05.2023
DK
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
| Pages for Publication | * |
| Number of Pages with Drawings | * |
| Pages of Specification | * |
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International Searching Authority |
EPO
* |
| Applicant's Legal Status |
Legal Entity
* |
| * | |
| * | |
| * | |
| * | |
| Entry into National Phase under |
Chapter I
* |
| Translation |
|
Recalculate
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing | 1129 | |
| EPO | Filing, Examination | 4668 | |
| Japan | Filing | 530 | |
| South Korea | Filing | 608 | |
| USA | Filing, Examination | 2635 |
Total: 9570 USD
Abstract[English]
Systems and methods for reducing stray currents in a rotary shaft (34, 46) of an electric machine (26). A common mode choke (70) including a high-permeability material is placed proximate to the rotary shaft (34, 46) of the electric machine (26). The common mode choke (70) is positioned between a shaft support (50) that supports the rotary shaft (34, 46) and a rotor (40) of the electric machine (26), and increases the impedance of the rotary shaft (34, 46) to stray currents conducted through the rotary shaft (34, 46). This increase in impedance impedes the flow of stray currents in the rotary shaft (34, 46), thereby reducing stray currents in the shaft supports (50) and other drivetrain components.[French]
Systèmes et procédés permettant de réduire des courants vagabonds dans un arbre rotatif (34, 46) d'une machine électrique (26). Une bobine d'arrêt de mode commun (70) comprenant un matériau à haute perméabilité est placée à proximité de l'arbre rotatif (34, 46) de la machine électrique (26). La bobine d'arrêt de mode commun (70) est positionnée entre un support d'arbre (50) qui supporte l'arbre rotatif (34, 46) et un rotor (40) de la machine électrique (26), et augmente l'impédance de l'arbre rotatif (34, 46) à des courants vagabonds conduits à travers l'arbre rotatif (34, 46). Cette augmentation de l'impédance empêche le flux de courants vagabonds dans l'arbre rotatif (34, 46), réduisant ainsi les courants vagabonds dans les supports d'arbre (50) et d'autres composants de chaîne cinématique.