Motor fault detection system based on coupling injection of high frequency signals
US11474152B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2019 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Mar 4, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor fault detection system is based on coupling injection of high-frequency signal. An input end of the motor is connected with the high-frequency detection signal source circuit through the coupling circuit to inject a high-frequency detection signal into the motor winding; an input end of the high-frequency detection signal source circuit is connected with an output end of the controller to control the output of the high-frequency detection signal; an output end of the response signal processing circuit is connected with an input end of the controller to send the received voltage or current response signal to the controller; and the controller judges whether the motor has a fault and the degree of the fault by analyzing the response signal after applying an excitation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.