The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 2025
Filed:
Jun. 16, 2023
North China Electric Power University (Baoding), Baoding, CN;
Yuling He, Baoding, CN;
Wen Zhang, Baoding, CN;
Yong Li, Baoding, CN;
Yifan Bai, Baoding, CN;
Mingxing Xu, Baoding, CN;
Xiaolong Wang, Baoding, CN;
North China Electric Power University (Baoding), Baoding, CN;
Abstract
A generator fault detection method based on the characteristics of air gap magnetic flux density includes the following steps: S: installing detection devices on a generator and building a test platform; S: obtaining an air gap magnetic flux density signal through the detection devices; S: transforming a time domain signal of the magnetic flux density into a frequency domain signal by using a fast Fourier transform; S: judging if the generator has an air gap eccentricity or a stator inter-turn short circuit fault through the comparison of time domain and frequency domain; S: obtaining a value of air gap magnetic flux density by calculation, selecting and then comparing a root mean square value of magnetic flux density under different working conditions with the root mean square value of magnetic flux density under normal condition to determine a fault degree.