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The article discusses the improvement of traction and energy performance main-line locomotives due to more complete use of possibilities of flexible microprocessor control and efficient algorithm that provides reduction of electrical losses in the traction asynchronous drive over the entire range working capacity. In the best way for a promising loco is tract with using a traction asynchronous drive. Such kind of tract drives allow completely use of the coupling mass of loco compares with collector track drive, due to the absence of a collector it is possible to increase the active length of the rotor and high reliability which makes it possible to realize increased axial power.

An algorithm for controlling a traction asynchronous drive that minimizes electrical power losses