Motor driving system converter fault diagnosis method based on adaptive sparse filtering
US11817809B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2022 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | Nov 23, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The disclosure discloses a motor driving system converter fault diagnosis method based on adaptive sparse filtering, and belongs to the field of driving system fault diagnosis. The disclosure applies an unsupervised learning algorithm to an application scene of converter fault diagnosis. Effective features are automatically extracted from original data, and the problem of manual feature design based on expert knowledge is solved. Meanwhile, in consideration of current fundamental period change caused by different rotation speed working conditions, rotation speed feedback is introduced, secondary sampling is carried out on current sampled at a constant frequency, it is ensured that the length of a signal input into the deep sparse filtering network is one fundamental wave period, redundant information is better removed from original data, the calculation burden is relieved, and the accuracy and rapidity of the diagnosis algorithm are improved to a certain extent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.