MATHEMATICAL MODEL OF A BATTERY FOR THE DESIGN OF HYBRID POWER SYSTEMS BASED ON RENEWABLE ENERGY SOURCES

The article is devoted to solving the problem of implementing a mathematical model of battery energy storage that has versatility, high performance and other qualities necessary for performing analysis of operating modes and design optimization of hybrid renewable energy systems. Due to the specific operating conditions of hybrid systems, as well as the presence of specific requirements for their design, most of the proposed models were unsuitable for solving design problems. The proposed model is based on a combination of the modified Shepherd model and the kinetic battery model (KiBaM), which makes it possible to simulate the operating modes of various types of batteries with algorithmic simplicity of identifying model parameters based on technical specification data. The experimental testing of the developed model showed that the model provide adequate simulation results for the change in the main parameters of dynamic modes and has high performance, which allows it to be used to solve problems of simulation modeling of modes and optimization of the hybrid power supply system equipment based on renewable energy sources.