Novel Intelligent Control Technology for Enhanced Stability Performance of an Ocean Wave Energy Conversion System
Abstract
:1. Introduction
2. Modeling of the Studied System
2.1. Structure of the System
2.2. Wave Energy Characteristics
2.3. Wells Turbine Modeling
2.4. DFIG Modeling
3. Design of the Novel FLWRBFN with DEPSO Control System
3.1. Function-Link Based Wilcoxon Radial Basis Function Network (FLWRBFN)
3.2. Learning and Training Procedures of FLWRBFN
3.3. DEPSO Online Adjusts Learning Rate
4. Analysis of Convergence
5. Simulation Results and Case Studies
5.1. Load Change
5.2. Short Circuit Fault
6. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Method | Iterative Number | CPU Run Time (102 s) | Mean Square Error (10−3) | Accuracy (%) |
---|---|---|---|---|
FLWRBFN + DEPSO | 57 | 1.48 | 1.235 | 98.76 |
FLWRBFN + MPSO | 90 | 2.34 | 5.017 | 94.98 |
FLWRBFN + PSO | 54 | 1.40 | 7.581 | 92.42 |
RBFN | 94 | 2.44 | 10.051 | 89.95 |
Methods | Interative Number | CPU Run Time (102 s) | Mean Square Error (10−3) | Accuracy (%) |
---|---|---|---|---|
FLWRBFN + DEPSO | 64 | 1.66 | 15.965 | 84.03 |
FLWRBFN + MPSO | 94 | 2.44 | 20.071 | 79.93 |
FLWRBFN + PSO | 91 | 2.36 | 29.057 | 70.94 |
Method | FLWRBFN + DEPSO | FLWRBFN + MPSO | FLWRBFN + PSO | RBFN |
---|---|---|---|---|
Grid-Side Voltage | 1.0003125 | 1.0005316 | 1.0004338 | 0.9976911 |
DC-Side Voltage | 1.0012123 | 1.0026557 | 1.0013670 | 0.9896110 |
Max. Transient Over Shoot Voltage | 1.0043437 | 1.0060341 | 1.0071922 | 1.0085975 |
Max. Transient Under Shoot Voltage | 0.9965313 | 0.9954371 | 0.9957687 | 0.991125 |
Method | FLWRBFN + DEPSO | FLWRBFN + MPSO | FLWRBFN + PSO | RBFN |
---|---|---|---|---|
Grid-Side Voltage | 1.0204878 | 1.0257873 | 1.0310922 | 1.0214457 |
DC-Side Voltage | 1.006251 | 1.0069122 | 1.0052166 | 1.0071458 |
Max. Transient Over Shoot Voltage | 1.0780488 | 1.0993411 | 1.1477012 | 1.1931707 |
Max. Transient Under Shoot Voltage | 0.9609756 | 0.0922378 | 0.0912409 | 0.0902439 |
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Lu, K.-H.; Hong, C.-M.; Tan, X.; Cheng, F.-S. Novel Intelligent Control Technology for Enhanced Stability Performance of an Ocean Wave Energy Conversion System. Energies 2021, 14, 2027. https://doi.org/10.3390/en14072027
Lu K-H, Hong C-M, Tan X, Cheng F-S. Novel Intelligent Control Technology for Enhanced Stability Performance of an Ocean Wave Energy Conversion System. Energies. 2021; 14(7):2027. https://doi.org/10.3390/en14072027
Chicago/Turabian StyleLu, Kai-Hung, Chih-Ming Hong, Xiaojing Tan, and Fu-Sheng Cheng. 2021. "Novel Intelligent Control Technology for Enhanced Stability Performance of an Ocean Wave Energy Conversion System" Energies 14, no. 7: 2027. https://doi.org/10.3390/en14072027