WO2025103837 - METHOD FOR DETECTING DEMAGNETIZATION OF A PLURALITY OF PERMANENT MAGNETS FITTED ON A ROTOR OF AN ELECTRICAL MACHINE
National phase entry is expected:
Publication Number
WO/2025/103837
Publication Date
22.05.2025
International Application No.
PCT/EP2024/081323
International Filing Date
06.11.2024
Title **
[English]
METHOD FOR DETECTING DEMAGNETIZATION OF A PLURALITY OF PERMANENT MAGNETS FITTED ON A ROTOR OF AN ELECTRICAL MACHINE
[French]
PROCEDE DE DETECTION D'UNE DEMAGNETISATION D'UNE PLURALITE D'AIMANTS PERMANENTS EQUIPANT UN ROTOR D'UNE MACHINE ELECTRIQUE
Applicants **
IFP ENERGIES NOUVELLES
Inventors
TRINH, Ngoc-Tu
ZEIN, Ismail
NGUYEN, Manh Quan
VIDAL-NAQUET, Fabien
Priority Data
FR2312565
16.11.2023
FR
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
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| Pages of Specification | * |
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| Number of Office Actions | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| * | |
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| 译文 |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1926 | |
| EPO | Filing, Examination, Granting | 8276 | |
| Japan | Filing, Examination, Granting | 2001 | |
| South Korea | Filing, Examination, Granting | 1757 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
18,700
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
The present invention relates to a method for detecting demagnetization of at least one permanent magnet of a rotor of an electrical machine, comprising acquiring (ACQ) the voltages, currents and position and/or speed of the rotor, along with at least one temperature (for example that of the winding or that of the stator or rotor), and wherein two different estimates of the magnetic flux of the permanent magnets and of the temperature of the permanent magnets and of their standard deviation are carried out in order to detect demagnetization of the permanent magnets (Dem) by way of comparison (COMP).[French]
La présente invention concerne un procédé de détection d'une démagnétisation d'au moins un aimant permanent d'un rotor d'une machine électrique, pour lequel on acquiert (ACQ) les tensions, les courants et la position et/ou la vitesse du rotor, ainsi qu'au moins une température (par exemple celle du bobinage ou celle du stator ou du rotor), et dans lequel on met en œuvre deux estimations différentes du flux magnétique des aimants permanents ainsi que de la température des aimants permanents et de leur écart-type, pour détecter, par comparaison (COMP) une démagnétisation des aimants permanents (Dem)