Advanced Feedforward Controller for a Molten Salt Receiver in Star Design Based on Real-Time Flux Measurement
DOI:
https://doi.org/10.52825/solarpaces.v2i.815Keywords:
Molten Salt Receiver, Star Design, Feedforward Controller, Model Predictive Control, Cloud PassagesAbstract
This paper presents a control system with a panel-wise applied feedforward temperature controller for a molten salt receiver in star design utilizing temperature measurements in the connecting pipes between the panels and a real-time flux density measurement as inputs. It is tested in realistic cloud passage scenarios and the results are compared to the results from an earlier developed control system for the same receiver, in which the temperature controller is based on a simple feedback controller (PID) supported by a simple feedforward controller. The results show that the performance of the new feedforward controller is outstanding and could be applied to common cylindrical receiver designs as well. Nevertheless, the highly increased actuator movement of the control valves is to be further investigated.
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Flesch R, Maldonado D, Schwarzbözl P. Dynamic Modelling of Molten Salt Central Receiver Systems: 41–2. 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. 2021:30020. doi: https://doi.org/10.1063/5.0151514.
Frantz C, Schloms F, Kuhl M, Binder M, Schuhbauer C. Design and Cost Analysis of a Combined STAR and C-PV Molten Salt Receiver Concept for CSP Applications. SolarPACES Conference 2022. 2022.
Puppe M, Giuliano S, Frantz C, Uhlig R, Flesch R, Schumacher R, et al. Techno-economic optimization of molten salt solar tower plants. AIP Conference Proceedings 2018. doi: https://doi.org/10.1063/1.5067069.
Raeder C, Offergeld M, Röger M, Lademann A, Zöller J, Glinka M, et al. Proof of concept: Real-time flux density monitoring system on external tube receivers for optimized solar field operation. SolarPACES Conference 2021:80008. doi: https://doi.org/10.1063/5.0148725.
Göhring F, Bender O, Röger M, Nettlau, Janina, Schwarzbözl, Peter. Flux Density Measurment on Open Volumetric Receivers. Proc. of SolarPACES 2011;2011.
Röger M, Herrmann P, Ulmer S, Ebert M, Prahl C, Göhring F. Techniques to Measure Solar Flux Density Distribution on Large-Scale Receivers. Journal of Solar Energy Engineering 2014. doi: https://doi.org/10.1115/1.4027261.
Offergeld M, Röger M, Stadler H, Gorzalka P, Hoffschmidt B. Flux density measurement for industrial-scale solar power towers using the reflection off the absorber:110002. doi: https://doi.org/10.1063/1.5117617.
Sattler JC, Schneider IP, Angele F, Atti V, Teixeira Boura C, Herrmann U. Development of Heliostat Field Calibration Methods: Theory and Experimental Test Results. SolarPACES Conf Proc 2023. doi: https://doi.org/10.52825/solarpaces.v1i.678.
Schulte J, Schwager C, Frantz C, Schloms F, Teixeira Boura CJ, Herrmann U. Control Concept for a Molten Salt Receiver in Star Design: Development, Optimization and Testing with Cloud Passage Scenarios. SolarPACES Conf Proc 2023. doi: https://doi.org/10.52825/solarpaces.v1i.693.
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.
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.
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Copyright (c) 2024 Jonas Schulte, Christian Schwager, Cristiano Teixeira J. Boura, Ulf Herrmann
This work is licensed under a Creative Commons Attribution 4.0 International License.
Accepted 2024-06-21
Published 2024-08-28