| 摘要 |
A method to diagnose and localize parasitic voltages in an electric drive train is provided. The method includes manipulating a multiplexer to sequentially connect multiple diagnostic locations to a generator neutral, at predefined intervals. A voltage sensor senses a voltage transmission through a lead line that connects the multiplexer to the generator neutral. The voltage sensor generates a voltage signal and delivers that voltage signal to a controller, which compares the voltage signal to a predefined voltage threshold stored within. If the voltage signal exceeds the voltage threshold, the controller determines a parasitic voltage. Based on the location data of the diagnostic locations and the predefined intervals, the controller identifies at least one diagnostic location that experiences the parasitic voltage. Finally, the controller provides feedback in regard to the diagnostic location that experiences the parasitic voltage using the feedback interface. |
| 主权项 |
1. A method to diagnose and localize parasitic voltages in an electric drive train, the electric drive train having a parasitic voltage diagnosis and localization system that includes a multiplexer having diagnostic centers respectively connect to a plurality of diagnostic locations, the multiplexer in turn connecting the plurality of diagnostic locations to a generator neutral via a lead line, the parasitic voltage diagnosis and localization system including a voltage sensor connected to the lead line, and a controller connecting to both the multiplexer and the voltage sensor, wherein the controller stores a location data of the plurality of diagnostic locations, and in turn connects to a feedback interface, the method comprising:
manipulating the multiplexer to connect the plurality of diagnostic locations to the generator neutral at predefined intervals, the connection being facilitated by the controller; sensing a voltage transmission through the lead line by using the voltage sensor and correspondingly generating a voltage signal; delivering the voltage signal from the voltage sensor to the controller; comparing the voltage signal to a predefined voltage threshold stored within the controller; determining a parasitic voltage if the voltage signal exceeds the predefined voltage threshold; identifying at least one diagnostic location among the plurality of diagnostic locations that experiences the parasitic voltage, the identification being based on the location data of the plurality of diagnostic locations and the predefined intervals; and: providing a feedback on at least one of the plurality of diagnostic locations that experiences the parasitic voltage, using the feedback interface. |
