Multiple-motor coordinated control method based on power traction uniformity

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,...

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 output the allocated power. At this time, it is necessary to redistribute the torque output of multiple motors to maintain the total traction torque.

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