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Automatic correction method of railway locomotive tractive characteristic curve

A technology for traction characteristics and railway locomotives, which is applied to railway vehicles, locomotive propulsion methods, locomotives, etc., and can solve problems such as different degrees of locomotive wear, changes in output characteristics of traction converters, and manual inability to perform timely measurement and timely corrections. , to achieve the effect of improving reliability and life

Inactive Publication Date: 2013-04-24
CRRC DALIAN CO LTD
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Problems solved by technology

However, wheel wear is a long-term accumulation process and the wear degree of different locomotives is not the same, and manual measurement and timely correction cannot be performed
If the characteristics of the locomotive are not revised in time, the output characteristics of the traction motor and traction converter will change and the life of the equipment will be shortened

Method used

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  • Automatic correction method of railway locomotive tractive characteristic curve

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Embodiment Construction

[0010] 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 making creative efforts belong to the protection scope of the present invention.

[0011] see figure 1 , the method for automatically correcting the traction characteristic curve of a railway locomotive in this embodiment starts from frame 1. Enter box 2, and obtain the running speed V of the locomotive by detecting the railway kilometer mark. Enter block 3, and detect the speed n of the traction motor at the same time. ...

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Abstract

Disclosed is an automatic correction method of railway locomotive tractive characteristic curve. The method includes that a locomotive running velocity V is obtained by detecting railway kilometer posts and traction motor rotation speed n at the same time, a locomotive practical wheel diameter value D is obtained by calculating the locomotive velocity V and traction motor rotation speed and a control system provides a locomotive tractive characteristic curve according to the locomotive practical wheel diameter value. The automatic correction method judges the locomotive practical wheel diameter value by using the corresponding relationship of the traction motor rotation speed and a practical velocity of locomotive, and then revises automatically the characteristic curve to ensure normal working condition of devices such as the tractive motor and a traction converter, thereby the system reliability is enhanced and service life is prolonged.

Description

technical field [0001] The invention relates to a method for automatically correcting traction characteristic curves of railway locomotives, belonging to the technical field of railway locomotives. Background technique [0002] During the operation of the locomotive, after long-term operation, the wheels of the locomotive will experience uneven wheel wear and uneven tread surfaces. At this time, the wheel surface needs to be repaired to ensure the smoothness of the wheel surface. After the wheel surface is worn or turned over, the wheel diameter of the locomotive decreases. After manual measurement, the measured wheel diameter is input into the control microcomputer for identification by the microcomputer. However, wheel wear is a long-term accumulation process and the wear degree of different locomotives is not the same, and it is impossible to measure and correct it manually manually. If the characteristics of the locomotive are not revised in time, the output characteris...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61C3/00
Inventor 王威郝凤荣刘霞田光兴候强
Owner CRRC DALIAN CO LTD
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