Design of the Three-Level Multicriterial Strategy of Hybrid Marine Power Plant Control for a Combined Propulsion Complex

Abstract

Purpose. Efficiency of hybrid ships power plants (SPP) combined propulsion complexes (CPC) by various criteria for energy management systems strategies. Methodology. Based on the classification system topologies SPP CPC for mechanical, electrical and hybrid types of motors schematic diagrams of management strategies for the criterion of minimum power consumption are defined. Changing the technical component of the traditional approach to building hybrid ships electric power systems (SEPS) SPP CPC the principle of modifying the structure of SEPS is applied with the integration of additional static alternative power source as dynamic reserve, which allowed to meet modern requirements for energy efficiency, levels of vibration, noise and degradation effects produced to SPP CPC, in all areas of the energy for the transfer of power from energy to propellers. Modeling of power transmission of energy to propellers in MatLab/Simulink is conducted, using blocks of optimization library and definition of identity markers. Results. Major advantages and disadvantages SPP CPC depending on the topology of energy distribution systems are determined. According to the chosen structure system electricity characteristics were obtained in the process of power transmission SPP CPC and power systems and their control strategies in terms of increased efficiency and eliminate these drawbacks. And finally, mathematical apparatus for research in terms of the development of methods for designing and managing SPP hybrid CPC to reduced fuel consumption, emissions into the environment and improving maintainability, flexibility and comfort level are improved. Originality. The methodology for improving SPP CPC implementation by developing methods of identification markers mutually influencing processes in SPP CPC and the development of implementing these methods of settlement and information systems. Practical value. The method enables iterative optimization parameters SPP CPC, it can be used as a means of intelligent design, which is the result of the application of improved performance SPP CPC. References 49, table 1, figures 12. Key words: ship power plants, combined propulsion complexes, energy management system, control strategy.На основании системной классификации топологий судовых энергетических установок (СЭУ) комбинированных пропульсивних комплексов (КПК) были систематизированы основные преимущества и недостатки СЭУ КПК в зависимости от топологии системы управления распределением энергии. Были получены характеристики процессов передачи мощности в СЭУ КПК и системах энергоснабжения, и их стратегий контроля с точки зрения повышения эффективности и устранения указанных недостатков. Усовершенствован математический аппарат для проведения исследований с точки зрения разработки методов проектирования и управления гибридными СЭУ КПК с сокращением потребления топлива, выбросов в окружающую среду и повышении ремонтопригодности, маневренности и уровня комфорта. Разработанный метод дает возможность итерационной оптимизации параметров СЭУ КПК, что ...

Building a technological model of the exhaust gas energy recovery device for the diesel engine on a small­sized vessel

“…Aboard large specialized vessels, the exhaust gas energy is used in cogeneration plants for the combined production of mechanical and electrical energy. Study [2] considers the appropriate operation principle of vessel thermal machines, whose mechanical energy supplements the energy of the main engine. In a ship's hybrid powerplant, the Stirling engine could be linked to a crankshaft through a hydraulic clutch or work for an electric generator.…”

Determining energy-efficient operation modes of the propulsion electrical motor of an autonomous swimming apparatus

“…However, the patterns of power saving modes are paid very little attention to. Many studies have shown that the propeller screw [5,7] renders main load to the engine of propulsion [2,8] complex with rarely taking into consideration the fact that the load moment M c is close to the "fan" type [11,12]. In the first approximation, a given moment is proportional to the second degree of propeller screw rotation frequency w:…”

“…where k 1 and k 2 are coefficients that depend on the parameters of propeller (pitch, diameter, etc. ), on the features of design of the propulsion [2,12] complex, navigation mode, level of immersion of the propeller.…”

“…We should take into consideration that it is required when creating such a new Ukrainian and highly technological device as an unmanned swimming apparatus: a) to enable control over rotation frequency of propulsion [2] complex of the apparatus in a relatively small range at minimal capital costs, short time of pre-design and structural-technological preparation for production; b) to ensure work of propulsion electric motor with a relatively low capacity (up to 500 Watts) under a baro-unloaded mode [3]; c) to be able to accomplish a number of additional tasks and meet requirements to design, overall architecture and operation of an unmanned vehicle, including power source, control, navigation, positioning, communication, work of additional devices, mechanisms, etc. ; d) to resolve a challenging task on designing a special-purpose vessel [4,5] -to minimize the cost of the apparatus, to ensure minimum weight and size indicators at the maximum-possible special payload, to minimize duration of design and construction.…”

Theoretical-applied aspects of the composition of regression models for combined propulsion complexes based on data of experimental research

“…Simulation modeling implies carrying out experiments with the model represented in the form of the set of algorithms describing behavior of CPC SPP. The simulation process is executed by running the multitude of sets of experimental data according to the operating mode and situational factors of the programs based on them [5].…”