Numerical Simulation of Power Plants with Reciprocating Engines Using Modelica Language

The authors develop methods of power plants with reciprocating internal combustion engines mathematical modeling, which include: modeling principles based on system, component and object-oriented approaches; methods of different physical domains submodels conjunction, based on the bond graphs theory; mathematical models of the power plant components and their connections. Further, the research authors propose methods of solving the problem of the related processes time scales equalizing in power plants and reciprocating engines systems and problem of the different design solutions mathematical description for power plants. Software for numerical simulation of power plants with reciprocating engines, is created using the Modelica language. Mathematical models and software were verified using the results of the experimental study of the cogeneration power plant prototype with reciprocating engine. The study results were used for technical solutions development in order to improve power plants characteristics with reciprocating internal combustion engines.