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The perspective directions of electrical propulsion installations development are considered. It is shown that using unipolar DC machines with superconducting exciting windings from niobium-titanium alloy is advisable as the main generators and electric propulsion motors. The advantages of these machines, which allow us to successfully solve the issues of reducing the specific gravity and dimensions of the machine, increasing the indicators of their energy efficiency, maneuverability and controllability, as well as the problems of noise and electromagnetic disturbances reduction, are highlighted. The analysis of the existing developments of unipolar machines, presented by the domestic scientists and the leading international companies, is carried out. The designs and parameters of recent years developments are considered. An example of implementing the liquid-metal current collection technology in the unipolar machine bus, which makes it possible to increase the current density by several orders of magnitude compared with the existing technology of the brush current collection, is given. The assumed structure of constructing the ship electric power system, consisting of the unipolar propulsion motor, is shown. A comparative analysis of the main parameters of the electric propulsion AC installation with the asynchronous electric propulsion motor and the electric propulsion installation with the unipolar propulsion DC motor with the power of 19 MW and the nominal rotation speed of the anchor of 150 rpm is carried out. The significant superiority of the electrical propulsion installation with the unipolar DC electric motor in terms of the weight and dimensions of all main elements of the installation compared to the classical DC machines has been revealed. The conclusion on the new technologies development in the field of building the unipolar DC machines and emerging a promising direction for the synthesis of electrical propulsion installations based on these machines is made.

vestnik gosudarstvennogo universiteta morskogo i rečnogo flota imeni admirala s. o. makarova/vestnik gosudarstvennogo universiteta morskogo i rečnogo flota imeni admirala s.o. makarova

PROSPECTS OF APPLYING THE UNIPOLAR MACHINES IN THE ELECTRICAL PROPULSION INSTALLATIONS