MODELING OF NONLINEAR STABILITY OF AUTOMATIC CONTROL SYSTEMS OF PELTIER THERMOELECTRIC MODULES
Gleb S. Vasilyev; Oleg R. Kuzichkin; Dmitry I. Surzhik; Ksenya V. Bondarik
• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Renewable Energy Sources and Clean Technologies
The high performance characteristics of Peltier thermoelectric modules (TEM) in comparison with compressor cooling systems are determined by the convenience of their use for both cooling and heating, technological advantages due to the absence of moving parts, etc. To effectively regulate the temperature conditions of TEM, it is necessary to develop automatic control systems with specified characteristics. Modeling and design of such systems is complicated by the essentially nonlinear properties of the constituent units, as well as the control object – the Peltier module. To analyze the nonlinear stability of a trigenerative climate control system based on TEM, a mathematical model of the system in the form of transfer characteristics based on approximation by piecewise linear functions has been developed. The relations defining the conditions of absolute stability of the model in the nonlinear mode according to the Popov criterion are obtained. As a result of the simulation, the stability areas of the system are calculated with varying parameters of the component links. The directions for the further use of the proposed methodology for the subsequent optimization and synthesis of TEM control systems are determined.
trigeneration of energy, Peltier thermoelectric module, transfer characteristic, piecewise linear approximation, stability, Popov criterion
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The article was prepared as part of the state task "Research and development of complex energy-saving and thermoelectric regenerative systems" application number 2019-1497, subject number FZWG-2020-0034.
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Turkish Acad Sci.