State Detection Method of Output Current Sensor of Locomotive Traction Converter
A technology of current sensor and traction converter, applied in instruments, measuring devices, measuring electrical variables, etc., can solve the problem of inability to detect the fault of the output current sensor, and achieve the effect of easy implementation
Active Publication Date: 2020-01-07
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] However, the existing detection method of introducing a current source can only detect whether the signal link where the output current sensor is located is normal, and cannot detect whether the output current sensor itself is faulty
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0048] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.
[0049] Also, in the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without the specific details or in the particular manner described.
[0050] In addition, the steps shown in the flow dia...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for detecting a state of an output current sensor of a locomotive traction converter. The detection method of the output current sensor of the locomotive traction converter comprises steps of obtaining a current intermediate voltage value, calculating a first output current value corresponding to the current intermediate voltage value on the basis of a preset detection model, performing sampling on a detected output current value of a tested output current sensor under the current intermediate voltage value in a preset sampling period to obtain a current sampling value set, determining a second output current value corresponding to the current intermediate voltage according to the current sampling value set, performing matching on the first output current value and the second output current value and determining a fault state of the tested output current sensor according to a matching result. The detection method realizes detection on an output current sensor main body while comprehensively considering a current sensor main body, and the detection method does not need to increase extra hardware auxiliary measurements and is easy to implement.
Description
technical field [0001] The invention relates to the technical field of electric locomotives, in particular to a method for detecting the state of an output current sensor of a locomotive traction converter. Background technique [0002] At present, the locomotive traction converter adopts the AC-DC-AC voltage inverter which is widely used. The inverter usually consists of a grid-side IGBT module, a connecting busbar, a DC support capacitor, a machine-side IGBT module, a control unit, and a sensor. and traction motors. Wherein, the above-mentioned sensors include input current sensors, branch circuit voltage sensors, output current sensors, speed sensors and the like. Signals from various sensors enter the signal conditioning circuit in the control unit to provide real-time feedback signals for the locomotive traction converter. The output current sensor is installed between the IGBT module on the machine side and the traction motor. The accurate detection of the sensor sig...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/00
CPCG01R35/00
Inventor 尚敬梅文庆粟爱军江平许为徐勇刘勇甘韦韦周志宇罗源
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST