Comparative analysis of the electromechanical transmissions schemes of tracked vehicles with two traction electric motors. Part 1

Introduction. Currently, an intensive development is being carried out to create tracked vehicles equipped with traction motors, the use of which practically eliminates the mechanical drive (friction clutches or brakes) controls, organizing stepless rectilinear motion and rotation together with the partial kinetic recuperation of braking energy.

The purpose of the study was to conduct a comparative analysis of the electromechanical transmissions schemes of tracked vehicles with two traction electric motors.

Methodology and research methods. To provide the possibility of a electromechanical transmissions comparative analysis the article presented kinematic and power link equations which made it possible to describe in general terms the transmission-rotation mechanisms of tracked vehicles equipped with two traction motors. The following variants of the circuit design of the transmission were compared: on-board drive of the drive wheels, separate drive for rectilinear movement and rotation, joint drive for rectilinear movement and rotation. The criterion for evaluating electromechanical transmissions was the value of the installed capacity of electric motors (the product of the maximum moment and the maximum rotational speed of the rotor shaft), referred to the power costs necessary to ensure rectilinear motion. To carry out the calculations, a number of operational operating modes of tracked vehicles were formed.

Scientific novelty and results. The methods presented in this work allowed to conduct a comparative assessment of the applied various circuit decisions effectiveness of the transmission-rotation mechanisms in the developed tracked vehicles at the design stage. Their distinctive feature was the application of a single approach to the obtained solutions analysis. The result of the study was a scientifically based choice of rational schemes of transmission-rotation mechanisms for high-speed tracked vehicles with two traction electric motors.

Practical significance. In the framework of the article, a number of rational circuit solutions for the transmission-rotation mechanisms of tracked vehicles have been obtained, the use of which will reduce the total installed capacity of the traction electric drive and, accordingly, reduce the weight and size parameters of the electric motors used.

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