Abstract
Objective: Analysis of various layouts of the electric drive of wheelsets and the control traction con- verter on transistor modules. Methods: The assessment and comparison of the layout solutions of asynchronous electric drives with one inverter supplying two or four traction motors is carried out. A mathematical analysis of the influence of the difference in the diameters of wheelsets leading to an inequality of traction forces and causing sliding has been carried out. Results: It was revealed that the use of the layout one inverter — four asynchronous motors is the least efficient and leads to a greater extent to negative consequences during the operation of wheelsets. Practical importance: The use of an electric drive scheme for subway cars with one inverter feeding two traction motors is substantiated, which leads to a more even distribution of traction and braking forces and significantly reduces the risk of slipping and skidding. Thus, the wear of wheelsets and the rest of the kinematic chain is reduced and the resource of their nodes and elements increases to a large extent
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