The Design of Electric Conversion and Energy Storage Integration of SOFC Combined Power Supply System Based on Feature Fusion

In order to reduce the low effective utilization of the combined thermal power supply system caused by the abnormal energy distribution, the design of the electric conversion and energy storage integration of SOFC combined power supply system based on feature fusion is proposed. The design of internal combustion engine, heat storage device and battery is carried out. Based on the system temperature, SOFC heat exchanger model is established. The energy state in the heat exchanger model is analyzed and judged by feature fusion. According to the results, the energy is converted, stored and released. The experimental results show that the energy utilization efficiency of the system can reach 81.57%, which is 36.9% higher than the source system, which has good application value.

ENERGY FLOW CONTROL IN COMBINED POWER SUPPLY SYSTEMS FOR AGRICULTURAL FACILITIES

The article proves the practicality of transferring individual objects of the agro-industrial sector to a combined power supply using a centralized network, photoelectric converters, and batteries. The authors state that there is no available information about the functioning algorithm of the combined power supply systems from foreign manufacturers and prove the necessity of independently developing and popularizing such systems. The article provides movement directions of energy fl ows in combined power supply systems. These areas off er the mutual redistribution of electrical energy between photovoltaic converters, batteries, consumers, and the industrial network. The authors show the prospects of developing the commercial supply of autonomously generated surplus electricity to the grid. The conditions for implementing the main directions of energy fl ows are formulated, and an algorithm for controlling the system elements is drawn up. The article presents the design of a basic relay-contact electrical circuit of the command-switching device of the combined power supply system. The authors describe the design of a semiconductor inverter ensuring the in-phase of the generated voltage with the industrial network voltage and present the block diagram of a command-switching device based on logical elements.

WAYS TO IMPROVE THE EFFICIENCY OF POWER SUPPLY TO REMOTE OBJECTS

The paper considers ways to improve the efficiency of combined power supply systems for remote facilities based on renewable energy sources. The developed circuit solution for the combined power supply of remote facilities based on mini-hydroelectric power plants, GT and thermoelectric generators installed on the boiler's gas outlet pipe will allow redistributing energy between consumers inside the facility or storing it in the electrochemical storage system during the period of minimum consumption.

The assesement of the shunt active filter efficiency under varied power supply source and load parameters

The results of theoretical and experimental studies on the problems of effective application of shunt active filters for power quality improvement and electromagnetic compatibility ensuring were presented in this article. Based on the different theories and methods, the most effective and well-studied control algorithms of shunt active filters were determined and analyzed to ensure their effective application in distributed generation systems and combined power supply systems. Mathematical and computer simulation models of shunt active filters with different control algorithms in distributed generation systems and combined power supply systems were developed. According to the results of mathematical modeling and computer simulation, the dependences were detected, reflecting the influences of internal and external parameters on the factors, determining the efficiency of the correction of power quality indicators. The range of permissible changes in the parameters of shunt active filters by saving the required efficiency level of power quality correction was detected under varied power supply system characteristics, load parameters and also in hybrid structures. The adaptive algorithm of the shunt active filter functioning under varied application conditions for automated power quality improvement is developed on the basis