Abstract
To limit the consequences of natural disasters and natural disasters (Japan's Fukushima NPP, Chornobyl NPP), reliable power supply systems are used for responsible mechanisms, which include engines of the cooling system of nuclear reactors, feed pumps and other consumers. Therefore, the use of reliable power supply systems increases the trouble-free operation of the station. Diesel generator sets, turbo generators, and batteries are used as sources of reliable power.
 A significant disadvantage of thermal sources of mechanical energy is the softness of external characteristics. Known sources do not cover the issue of using electromechanical converters for generating units with a capacity from 100 kW to several thousand kW.
 Theoretical studies on the basis of existing autonomous sources of power supply proved that existing heat engines do not allow to stabilize the speed of rotation of the synchronous generator, which feeds responsible consumers, even in the presence of a general-mode speed regulator. Therefore, a stabilization system was developed and proposed when powering a DC motor from a battery.
 The calculated dependences confirmed the stability of the generator rotation speed with the proper selection of the feedback coefficients.
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