Danyk V. Improving the efficiency of ship control combined propulsion systems

The dissertation work is devoted to the decision of an efficiency problem in- creasing of ship combined propulsive complexes control processes of at the expense of introduction of the differential drive-generator unit and methods of optimum control. It is noted that from the point of view of efficiency one of the most perspective directions of development of ships power systems at present is a combination of propulsive installation with electric power system: on the one hand, due to application of the shale generating installations providing power of consumers in running mode due to the introduction of electric propulsion systems with a single power plant. Based on the analysis of approaches to the construction of combined propulsion systems, the prospects for the use of CPCs based on electric propulsion systems with a reducer, in which the rowing motor is powered by a reversible frequency converter, requirements for the components of the CPC. To analyze the operation of the shaft generator set with a differential drive- generator unit in different modes of operation, the mathematical model of the control process of the ship's combined propulsion system was improved, which allows to analyze the operation of the complex both in running and in emergency mode. Based on the analysis of the results of computer modeling, the expediency of introduction of adaptive control systems of the combined propulsive complex is substantiated, the parameters characterizing efficiency of work of CPC and ways of their improvement are defined. The task is formalized on the basis of the criterion of generalized assessment of the quality of their operation, and a new method for optimal control of the frequency converter of the support generator is proposed. The expediency of using a fuzzy regulator to build an adaptive control system for a ship's combined propulsion system is justified. Computer simulation of the CPC with a fuzzy controller, the results of which confirmed the effectiveness of the pro- posed solutions. Based on the obtained results, the requirements for CPC components were determined, practical recommendations for building a control system and choosing the CPC shaft generator configuration were given. The use of the results obtained during the dissertation research allows to build highly efficient control systems for ship combined propulsion systems, significantly improve the quality of electricity in the ship's energy system and ensure the efficiency of the ship's power system in emergencies.