Ship power plant with reversible shaft generator unit operating by dual-power machine scheme and variable speed diesel generator

The article presents the analysis of operating modes small displacement vessels, which states that most working time vessels are in standby mode, or move at low speed. main ship diesel engines operate a load 10-15% (maximum 20%), impacts operational performance: oil and water jacket engine do not have to warm up, fuel consumption increases. There takes place coking piston rings, intercoolers other components, leads sharp decrease service life engine. In order eliminate disadvantages happening operation shared modes, it is considered use shaft generator unit as propeller prolonged vessel passing with speed maneuvering. Such variant can be called reversible (RSGU) capable both motor modes. At same time, advisable power general consumers from generator, which, save fuel, applied variable unit. presented RSGU based on an asynchronous machine phase rotor frequency converter (a double supply machine). functional structural schemes ship’s electric system using propulsive presented. Matlab software there developed simulation models results modeling above systems.