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Cooling fan control method and system of traction motor and freight train

A technology for cooling fans and traction motors, used in pump control, electric vehicles, machines/engines, etc., can solve the problems of low control efficiency and slow response of cooling fans, and achieve the effects of fast response, high efficiency, and comprehensive data and information

Active Publication Date: 2021-06-01
CRRC TANGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present application provide a cooling fan control method and system for traction motors, freight trains, to solve the problem that the traditional central control unit CCU and traction control unit TCU jointly control the cooling fan, resulting in low control efficiency of the cooling fan. Slow response to technical issues

Method used

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  • Cooling fan control method and system of traction motor and freight train
  • Cooling fan control method and system of traction motor and freight train
  • Cooling fan control method and system of traction motor and freight train

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053]Such as figure 1 As shown, the cooling fan control method of the rail train traction motor of the embodiment of the present application includes the following steps:

[0054] Step S100: the central control unit obtains the state of the traction inverter, the state of the cooling fan and cooling index information;

[0055] Step S200: According to the state of the traction inverter, the state of the cooling fan and the cooling index information, determine whether to issue a cooling fan operation request;

[0056] Among them, the central control unit obtains the state of the traction inverter from the traction control unit, obtains the state of the cooling fan from the electric switch of the power supply line of the cooling fan, and obtains the cooling index information from the system where the cooling index information collection device is located.

[0057] In the method for controlling the cooling fan of the rail train traction motor in the embodiment of the present app...

Embodiment 2

[0095] On the basis of the first embodiment, the method for controlling the cooling fan of the rail train traction motor according to the embodiment of the present application has the following characteristics.

[0096]During implementation, in the operation control of high-speed air cooling, the step of judging whether to issue a request for high-speed operation of the cooling fan includes the following steps:

[0097] A plurality of sub-steps for judging whether to issue a cooling fan high-speed operation request;

[0098] In any sub-step of judging whether to issue a request for high-speed operation of the cooling fan, if the judgment result is that a request for high-speed operation of the cooling fan is issued, a request for high-speed operation of the cooling fan is issued.

[0099] Specifically, a plurality of sub-steps of judging whether to issue a cooling fan high-speed operation request specifically include:

[0100] When the state of the traction inverter is in the...

Embodiment 3

[0160] On the basis of the second embodiment, the method for controlling the cooling fan of the rail train traction motor in the embodiment of the present application has the following characteristics.

[0161] During implementation, in the operation control of low-speed air cooling, the step of judging whether to issue a request for low-speed operation of the cooling fan includes the following steps:

[0162] A plurality of sub-steps for judging whether to send a cooling fan low-speed operation request;

[0163] In any sub-step of judging whether to issue a cooling fan low-speed operation request, if the judgment result is a cooling fan low-speed operation request, then issue a cooling fan low-speed operation request.

[0164] Specifically, a plurality of sub-steps of judging whether to issue a cooling fan low-speed operation request specifically include:

[0165] When the state of the traction inverter is working, and the cooling fan is low-speed air-cooled without failure;...

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Abstract

The embodiment of the invention provides a cooling fan control method and system of a traction motor and a freight train. The control method comprises the following steps that a central control unit obtains the state of a traction inverter, the state of the cooling fan and cooling index information; according to the state of the traction inverter, the state of the cooling fan and the cooling index information, whether a cooling fan operation request is sent out or not is judged; wherein the central control unit obtains the state of the traction inverter from a traction control unit, obtains the state of the cooling fan from an electric switch of a cooling fan power supply line, and obtains the cooling index information from a system where a cooling index information acquisition device is located. A control system is used for realizing the control method. The freight train comprises the control system. According to the embodiment of the invention, the technical problems of low control efficiency and slow response of the cooling fan due to the fact that the cooling fan is commonly controlled by a traditional central control unit (CCU) and a traction control unit (TCU) are solved.

Description

technical field [0001] The present application relates to the technical field of cooling of rail train traction motors, in particular, to a method and system for controlling cooling fans of traction motors, and freight trains. Background technique [0002] The traction motor in the rail train traction system is the key driving equipment for train traction. The stator coil of the traction motor provides the excitation magnetic field and kinetic energy for the traction motor. The bogie rotates, and high speed rotation can also cause the equipment to overheat. For traction motors with large heat generation, an independent cooling system is required to cool the equipment to ensure that the temperature of traction motor components is within the normal range and ensure driving safety. [0003] The control of the ventilation system of the traction motor directly affects the driving performance and driving safety of the train. At present, some rail trains, such as some vehicles wi...

Claims

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Application Information

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IPC IPC(8): F04D25/08F04D27/00F04D29/00F04D29/58
CPCF04D25/08F04D27/001F04D27/004F04D27/008F04D29/002F04D29/5806Y02T10/72
Inventor 宋君君郭文勇冀云赵佳颖郭凤媛杜苗苗
Owner CRRC TANGSHAN CO LTD
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