Multiple-motor coordinated control method based on power traction uniformity

An electric locomotive and coordinated control technology, applied in electric locomotives, locomotive propulsion methods, locomotives, etc., can solve the problems of loss of traction performance and difficulty in outputting power, and achieve a basically constant total traction, strong anti-interference, and good tracking performance. Effect

Active Publication Date: 2019-03-19
HUNAN UNIV OF TECH
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

However, the complex and changeable operating environment often causes some traction motors to lose traction performance, and it is difficult to ou

Method used

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  • Multiple-motor coordinated control method based on power traction uniformity
  • Multiple-motor coordinated control method based on power traction uniformity
  • Multiple-motor coordinated control method based on power traction uniformity

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Experimental program
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Embodiment Construction

[0013] The present invention will be further described below in combination with specific embodiments.

[0014] The SS8 electric locomotive adopts the B0-B0 axle structure and belongs to the 4-axle passenger locomotive. Each train is equipped with 4 traction motors, and the wheel set traction is transmitted through flat tie rods. The basic condition for the safe and stable operation of an electric locomotive is that the sum of the traction power provided by all motors is consistent with the total amount of traction required by the locomotive, that is,

[0015]

[0016] In the formula, T ej is the output torque of the jth motor, T e * is the total traction.

[0017] In order to ensure that the total amount of traction can be kept consistent when one or several motors lose their traction function, this embodiment constructs a multi-motor coordinated control strategy with the same total amount, such as figure 1 As shown, the coordination controller synthesizes the traction...

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Abstract

The invention provides a multiple-motor coordinated control method based on electric locomotive traction total quantity uniformity. The method includes that a multiple-motor coordinated control framework uniform in total quantity is built, a multiple-traction system distribution strategy based on energy function minimization is provided, and multiple motors are enabled to complete output torque adjustment by means of optimal dynamic adjusting. A sliding mode variable structure controller is established aiming at each independent traction subsystem, and actual output torque of each motor is tracked and fed back. The control method is high in interference ability, good in tracking performance and capable of still maintaining output total equantity and uniformity in total quantity needed fortotal quantity, and basically constant traction total amount in the process of electric locomotive running is ensured.

Description

technical field [0001] The invention relates to the technical field of electric locomotives, and more specifically, relates to a multi-motor coordinated control method based on the consistency of traction total amount of electric locomotives. Background technique [0002] As one of the core equipment of electric locomotives, the traction motor is the main provider of locomotive traction power. Most of the existing electric locomotives use multiple motors to jointly provide traction power: the microcomputer control system calculates the total traction power required according to the operating instructions of the cab handle. torque, and then distribute the traction torque to multiple traction motors installed on the bogie according to the preset distribution strategy. Then only when the sum of the output traction torques of the multi-motors is basically consistent with the total required traction torque, can the safe and stable operation of the locomotive be ensured. However,...

Claims

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Application Information

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IPC IPC(8): B61C17/12B61C3/00
CPCB61C3/00B61C17/12
Inventor 刘建华聂睿张昌凡何静赵凯辉黄刚李涛李祥飞
Owner HUNAN UNIV OF TECH
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