Multi-motor Coordinated Control Method Based on Consistent Traction Total Amount of Electric Locomotive

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 present invention relates to the technical field of electric locomotives, and more specifically, to a coordinated control method of multiple motors based on the consistent total traction of electric locomotives. Background technique [0002] As one of the core equipment of electric locomotives, traction motors are the main provider of traction power for locomotives. Most of the existing electric locomotives use multiple motors to provide traction power: the microcomputer control system calculates the total traction required according to the operating instructions of the cab handle The torque is then distributed to multiple traction motors mounted on the bogie according to a preset distribution strategy. Then, only when the sum of the output traction torque of the multiple motors is basically the same as the total required traction torque, can the safe and stable operation of the locomotive be ensured. However, the complex and changeable operating envir...

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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