Control Concept for a Molten Salt Receiver in Star Design
Development, Optimization and Testing With Cloud Passage Scenarios
DOI:
https://doi.org/10.52825/solarpaces.v1i.693Keywords:
Molten Salt Receiver, Star Design, Control Optimization, Cloud PassagesAbstract
A promising approach to reduce the system costs of molten salt solar receivers is to enable the irradiation of the absorber tubes on both sides. The star design is an innovative receiver design, pursuing this approach. The unconventional design leads to new challenges in controlling the system. This paper presents a control concept for a molten salt receiver system in star design. The control parameters are optimized in a defined test cycle by minimizing a cost function. The control concept is tested in realistic cloud passage scenarios based on real weather data. During these tests, the control system showed no sign of unstable behavior, but to perform sufficiently in every scenario further research and development like integrating Model Predictive Controls (MPCs) need to be done. The presented concept is a starting point to do so.
Downloads
References
Michael Puppe, Stefano Giuliano, Cathy Frantz, Ralf Uhlig, Robert Flesch, Ralph Schumacher, et al. Techno-economic optimization of molten salt solar tower plants. AIP Conference Proceedings. 2018;2033:40033. doi: https://doi.org/10.1063/1.5067069.
Flesch R, Maldonado D, Schwarzbözl P. Dynamic Modelling of Molten Salt Central Receiver Systems. In: : ARGESIM Publisher Vienna; 2018. doi: https://doi.org/10.11128/arep.55.a55231.
Schwager C, Angele F, Schwarzbözl P, Boura CJT, Herrmann U. Model Predictive Assistance for Operational Decision Making in Molten Salt Receiver Systems. SolarPACES Conference 2021. 2021.
Bonk A, Rückle D, Kaesche S, Braun M, Bauer T. Impact of Solar Salt aging on corrosion of martensitic and austenitic steel for concentrating solar power plants. Solar Energy Materials and Solar Cells. 2019;203:110162. doi: https://doi.org/10.1016/j.solmat.2019.110162.
Schwager C, Flesch R, Schwarzbözl P, Herrmann U, Boura CJT. Advanced two phase flow model for transient molten salt receiver system simulation. Solar Energy. 2022;232:362–75. doi: https://doi.org/10.1016/j.solener.2021.12.065.
Nelder JA, Mead R. A Simplex Method for Function Minimization. The Computer Journal. 1965;7:308–13. doi: https://doi.org/10.1093/comjnl/7.4.308.
Nouri B, Blum N, Wilbert S, Zarzalejo LF. A Hybrid Solar Irradiance Nowcasting Approach: Combining All Sky Imager Systems and Persistence Irradiance Models for Increased Accuracy. Solar RRL. 2022;6:2100442. doi: https://doi.org/10.1002/solr.202100442.
Published
How to Cite
Conference Proceedings Volume
Section
License
Copyright (c) 2023 Jonas Schulte, Christian Schwager, Cathy Frantz, Felix Schloms, Cristiano J. Teixeira Boura, Ulf Herrmann
This work is licensed under a Creative Commons Attribution 4.0 International License.