A technical solution for increasing the reliability of the phase-splitters of AC electric locomotives

Abstract

Abstract Russian Railways OAO is developing a program of the expansion of the Eastern polygon until 2030, the modernization of the transport infrastructure of which is the most important task for the economic and political development of the country. In the near future it is planned to complete the drawing up of a detailed planning schedule of the main stages of construction and parameters of reconstruction of the infrastructure of the Baikal-Amur Mainline and the Trans-Siberian railway. This will not only help to expand access to the markets of the Asia-Pacific region, but will also provide an opportunity to draw more income through an international transit East – West route. The tasks of increasing the reliability of electric rolling stock are brought to the forefront. The implementation of these tasks will reduce the cost of operating and repairing technological equipment. The development of technical means compatible with power supply systems and taking into account the operating conditions of electrical equipment is an urgent task. Power supply of auxiliary machines on all domestic electric locomotives is carried out without the stabilization of the voltage value and balance. At the same time, in order to ensure the reliability of the electric drive motors themselves when operating in the entire range of supply voltage variation, their rated power is increased by 25-50%. Therefore, auxiliary machines on all domestic electric locomotives of alternating current have increased overall dimensions and weight, but the circuit design of the drive system is simple and is presented in the article.