Method for diagnosing resistance faults of traction converter
By collecting the voltage and current signals of the resistor and calculating the resistance value using the least squares method and the inductance effect, the problem of the inability to monitor traction converter resistor faults online in the existing technology is solved, and real-time fault diagnosis and alarm of the resistor are realized.
CN117269616BActive Publication Date: 2026-07-21CRRC DALIAN R & D CO LTD
View PDF 1 Cites 0 Cited by
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CRRC DALIAN R & D CO LTD
- Filing Date
- 2023-08-15
- Publication Date
- 2026-07-21
Smart Images
Figure CN117269616B_ABST
Abstract
The application provides a traction converter resistor fault diagnosis method, which collects the voltage across the resistor, the current passing through the resistor and the sampling time signal when the resistor is working; the voltage across the resistor, the current passing through the resistor and the sampling time signal when the resistor is working are used to calculate the resistance value of the resistor; if the calculated resistance value exceeds the preset value of the standard resistance value at the design time, it is considered that the resistor has a fault and an alarm signal is sent. It can be seen that, in the application, the voltage across the resistor, the current passing through the resistor and the sampling time signal when the resistor is working are used to realize the online monitoring, fault diagnosis and alarm of the key resistor of the traction converter without additional sensors and collection units, and the abnormal resistor of the traction converter can be effectively monitored and alarmed.
Need to check novelty before this filing date? Find Prior Art