Three-phrase pulse-width modulation (PWM) rectifier fault diagnosis method based on wavelet packet analysis and support vector machine
A support vector machine and wavelet packet analysis technology, applied in the direction of instruments, measuring electronics, measuring devices, etc., can solve problems such as the difficulty of locating faults, achieve effective fault identification, avoid data normalization, and realize the effect of fault identification
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0026] The present invention will be further described below in conjunction with the accompanying drawings.
[0027] A kind of three-phase PWM rectifier fault diagnosis method embodiment based on wavelet packet analysis and support vector machine of the present invention comprises the following steps:
[0028] (1) if figure 1 The schematic diagram of the three-phase PWM rectifier circuit is shown. According to the principle of the rectifier, the fault types are divided into five categories and twenty-two sub-categories, that is, the fault types of the three-phase PWM rectifier are obtained.
[0029] 1) The IGBT power tubes are operating normally, and the rectifier has no faults.
[0030] 2) Only a single IGBT power tube fails, a total of six subcategories.
[0031] 3) There are two IGBT power tubes failing, and the two power tubes are in the same phase and on different sides, a total of three sub-categories.
[0032] 4) Two IGBT power tubes are faulty, and the two power tub...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com