Optimal Controller Design for Wind Turbine System Using Dynamic Programming
| dc.contributor.advisor | Dereje, Shiferaw (PhD) | |
| dc.contributor.author | Abibual, Abate | |
| dc.date.accessioned | 2020-03-07T07:18:32Z | |
| dc.date.accessioned | 2023-11-28T14:20:32Z | |
| dc.date.available | 2020-03-07T07:18:32Z | |
| dc.date.available | 2023-11-28T14:20:32Z | |
| dc.date.issued | 2019-10 | |
| dc.description.abstract | Now a days, many researchers are focusing on renewable energy sources due to the fact that the cost of fuel is growing up in day to day activity and to decrease or limit environmental effects.Wind energy is one of the fastest growing up energy source due to its cost effectiveness and availability. In this thesis, optimal controller is proposed to extract maximum wind energy from the available wind speed. To extract wind energy, the very volatile nature of wind speed has made it difficult the energy extraction process. Deterministic dynamic programing algorithm is chosen to design optimal controller. This type of numerical programming algorithm is highly applicable for the nonlinear model of wind turbine system and its constraints. The contribution of this thesis is that instead of standard torque control, optimal controller is employed to globally optimize wind energy capture under variable wind condition in region two(from cut-in to rated wind speed) operation of wind turbine system. The performance of this control method is tested via MATLAB software. The outcomes of the system have 7 up to 8.5 tip speed ratio optimal value and the aerodynamic efficiency has 0.411 conversion value. And also the optimal controller captured 13.841% more energy than STC for the piecewise step input wind speed. For the randomly generated wind speed pattern, the optimal controller captured 1.15% more energy than the STC. The lower percentage improvement in this case is due to the limited range of the wind speed value given for the simulation. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/20962 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Optimal control | en_US |
| dc.subject | dynamic programming | en_US |
| dc.subject | optimization | en_US |
| dc.title | Optimal Controller Design for Wind Turbine System Using Dynamic Programming | en_US |
| dc.type | Thesis | en_US |