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Fault determination method and device for traction converter

A traction converter and fault technology, applied in the field of rail transit, can solve problems such as hidden dangers of locomotive safety, and achieve the effect of reducing the failure rate

Active Publication Date: 2022-03-15
CRRC YONGJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, when the traction converter fails, if the fault cannot be determined in time and protective measures can be provided, it will cause safety hazards to the running locomotives

Method used

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  • Fault determination method and device for traction converter
  • Fault determination method and device for traction converter
  • Fault determination method and device for traction converter

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Embodiment Construction

[0093] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0094] figure 1 The circuit diagram of the traction converter provided for the embodiment of the present invention, such as figure 1 As shown, the traction converter provided in this embodiment includes: a rectifying device, a bus capacitor, a chopper branch and an inverter power module; wherein, a plurality of sensors are also arranged in the tr...

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Abstract

The present invention provides a method and device for determining a fault of a traction converter. The method includes: acquiring data collected by a sensor; judging whether at least one single item corresponding to the sensor is normal according to the data and preset conditions; If the state of the single item is not normal, the state bit of the abnormal single state is set to the fault position. In the embodiment of the present invention, when a fault occurs in the operation of the traction converter, it is possible to determine the abnormal operation corresponding to each individual state according to the indication of the status bit, thereby quickly performing related circuit protection operations, and effectively reducing the failure rate of the traction converter .

Description

technical field [0001] The invention relates to rail transit technology, in particular to a fault determination method and device for a traction converter. Background technique [0002] As an important part of the locomotive, the traction converter determines the performance of the locomotive such as starting, running and maximum operating speed. With the development of rolling stock technology, the performance requirements of the traction converter are getting higher and higher. [0003] The converter installed in the traction main circuit on electric locomotives and other locomotives equipped with electric transmissions. The function of the traction converter is to convert the electric energy between the DC system and the AC system, and to control and regulate various traction motors, thereby controlling the operation of the locomotive. [0004] However, when the traction converter fails, if the fault cannot be determined in time and protective measures can be provided, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
CPCG01R31/008
Inventor 王龙刚牛剑博张宇龙张瑞峰葸代其路瑶高永军詹哲军梁海刚
Owner CRRC YONGJI ELECTRIC CO LTD