Interfacing TRNSYS with MATLAB for Building Energy System Optimization

Josef Meiers and Georg Frey ()
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Josef Meiers: Chair of Automation and Energy Systems, Saarland University, 66123 Saarbruecken, Germany
Georg Frey: Chair of Automation and Energy Systems, Saarland University, 66123 Saarbruecken, Germany

Energies, 2025, vol. 18, issue 2, 1-23

Abstract: This contribution investigates whether the use of the MATLAB Optimization Toolbox on a parameter identification problem for a TRNSYS model provides better performance in iteration time. It presents the development of a framework connecting the MATLAB Optimization Toolbox with TRNSYS on the one hand and coordinating the optimization process of a TRNSYS model by GenOpt through MATLAB on the other hand. A benchmark framework in MATLAB was created to link TRNSYS and MATLAB and to configure the optimization process of GenOpt and the MATLAB Optimization Toolbox. Using this framework, a comprehensive comparison of the optimization solvers in GenOpt and the MATLAB Optimization Toolbox for the identification of the overall heat transfer coefficient of a TRNSYS heat exchanger model regarding the optimization time and number of iterations is presented as a use case. The results for the given problem show that GenOpt gives slightly better results in optimization time, whereas MATLAB has more potential and flexibility.

Keywords: TRNSYS; MATLAB; GenOpt; co-simulation; optimization; tool coupling (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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