Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Control optimization of low-temperature thermal solar power plants A.V. BELOUSOV IU.A. KOSHLICH The article focuses on optimizing the management of low-temperature hot water solar systems. Represented original mathematical model of the solar heating system, which is developed based on energy balance equations with elements of empirical relationships and takes into account the geometrical configuration of the system. Focuses on solving the problem of optimizing of control based on energy function. The paper presents a methodology for the application of the Pontryagin maximum principle for finding the optimal process control of charging heat energy. Originality of the technique consists in finding the velocity of the heat-transfer agent on nonlinear control function that maximizes the amount of heat energy, which heat-transfer agent convey to the tank. Represented the block diagram of an optimal system and recommendations for structural modifications to the standard schemes existing control systems of low-temperature double-contour active type solar thermal systems with additional heating water. Keywords: renewable energy, solar power plant, solar collector, model, optimization, control, maximum principle Contacts: Email: koshlich@yandex.ru Pp. 01-07.