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Low constant speed control method of diesel locomotive

A control method and technology for internal combustion locomotives, applied to electric vehicles, vehicle components, electric braking systems, etc., can solve problems such as poor stability accuracy of locomotive speed, affect production efficiency and production safety, and large fluctuations in locomotive speed. Effect of Control Accuracy and Speed ​​Stability

Inactive Publication Date: 2009-07-01
CRRC DALIAN CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the steady-state accuracy of the locomotive speed is poor. In the case of load disturbance, the locomotive speed fluctuates greatly, and sometimes even stops and starts, which affects production efficiency and production safety.

Method used

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  • Low constant speed control method of diesel locomotive
  • Low constant speed control method of diesel locomotive
  • Low constant speed control method of diesel locomotive

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Experimental program
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Effect test

Embodiment Construction

[0021] See attached figure 1 , the system hardware realizing the control method of the present invention is mainly made up of diesel locomotive microcomputer controller DLC and some signal devices. The signal device is a signal conversion device between the microcomputer control system and the locomotive system, including a voltage detection module for the main generator, a current module for detecting the main generator, a voltage transformer isolation module for detecting the speed of the locomotive, etc., which converts the analog signal on the locomotive (including voltage, current) and frequency signals (locomotive speed, diesel engine speed) are isolated and converted to the microcomputer controller DLC, and then the DLC sends the control signal to the exciter EXC and the diesel governor. By adjusting the diesel engine speed and the main generator TA current to achieve low constant speed operation of the locomotive.

[0022] The steps of the control method in the embodi...

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Abstract

The invention discloses a low constant speed control method for an internal combustion locomotive. The shifts of rotating speed of a diesel engine are allocated according to the field need, two independent closed loops of locomotive speed and current of a main generator are adopted, the PI adjustment operation is performed on a speed error signal of the locomotive and a current error signal of the main generator respectively to obtain an excitation pulse width control signal PW1 and an excitation pulse width control signal PW2, and the PWM excitation current of the main generator is controlled according to a smaller number, thus the method can ensure the low constant speed operation of the locomotive, can also ensure the limit on the current of the main generator, has good control accuracy and speed stability degree, and guarantees the ventilation quantity of a main rectifier cabinet and a pulling motor.

Description

technical field [0001] The invention belongs to the technical field of internal combustion locomotives, in particular to a method for controlling low and constant speeds of internal combustion locomotives. Background technique [0002] In recent years, in order to improve the loading efficiency of railway trains, some coal mines have adopted advanced rapid quantitative loading technology and equipment, requiring vehicles to pass directly under the hopper of the loading station at a constant speed of 0.5-1Km / h to realize automatic loading. This loading method requires the train to run at a low constant speed under the condition of constantly changing load. In order to make the train run at a low and constant speed, an electric transmission device called "iron ox" is used. The electric motor drives the steel wire rope to drag the vehicle to run at a constant speed to realize automatic loading. This transmission method consumes a lot of energy. , low production efficiency and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/00B60W10/06B60W10/18B60W30/14
CPCY02T10/7241Y02T10/72
Inventor 韩树明蔡志伟程显伟
Owner CRRC DALIAN CO LTD
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