Load control optimization method for offshore wind turbine based on LTR
A simple superposition method of two separate pitch control loops is adopted in the traditional tower load control and output power control, ignoring the coupling of rotor rotation and tower movement under aerodynamic force. Besides, tower load control performance is dependent on the accuracy of the...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-11-01
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| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S235248472100473X |
| _version_ | 1819099183019196416 |
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| author | Shize Tang De Tian Mingyue Huang Bei Li Lizhuang Tao |
| author_facet | Shize Tang De Tian Mingyue Huang Bei Li Lizhuang Tao |
| author_sort | Shize Tang |
| collection | DOAJ |
| description | A simple superposition method of two separate pitch control loops is adopted in the traditional tower load control and output power control, ignoring the coupling of rotor rotation and tower movement under aerodynamic force. Besides, tower load control performance is dependent on the accuracy of the tower motion sensor, resulting in a decrease in system reliability. Therefore, a pitch controller without sensor is proposed to achieve the coordinated control of tower load and output power. First, a low-order wind turbine state–space model is derived which is suitable for the design of pitch controller and compared with the linearized model from GH Bladed to verify the rationality of the deduced model. Then, based on the theory of multi-input and multi-output (MIMO) control, a linear quadratic Gaussian (LQG) pitch controller is designed integrated with disturbance accommodation controller (DAC). The Loop transfer recovery (LTR) method is used to restore dynamic characteristics of closed-loop to improve the performance of the pitch controller. The feasibility of the LTR method is proved by detailed theoretical analysis. Finally, compared with traditional controllers, it is verified that the proposed LTR pitch controller can further reduce tower load while stabilizing output power in different wind conditions. |
| first_indexed | 2024-12-22T00:42:49Z |
| format | Article |
| id | doaj.art-68e017eb3aea430db6effec1fc31991d |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-12-22T00:42:49Z |
| publishDate | 2021-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-68e017eb3aea430db6effec1fc31991d2022-12-21T18:44:38ZengElsevierEnergy Reports2352-48472021-11-01742884297Load control optimization method for offshore wind turbine based on LTRShize Tang0De Tian1Mingyue Huang2Bei Li3Lizhuang Tao4State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University), 102206, Beijing, ChinaCorresponding author.; State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University), 102206, Beijing, ChinaState Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University), 102206, Beijing, ChinaState Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University), 102206, Beijing, ChinaState Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University), 102206, Beijing, ChinaA simple superposition method of two separate pitch control loops is adopted in the traditional tower load control and output power control, ignoring the coupling of rotor rotation and tower movement under aerodynamic force. Besides, tower load control performance is dependent on the accuracy of the tower motion sensor, resulting in a decrease in system reliability. Therefore, a pitch controller without sensor is proposed to achieve the coordinated control of tower load and output power. First, a low-order wind turbine state–space model is derived which is suitable for the design of pitch controller and compared with the linearized model from GH Bladed to verify the rationality of the deduced model. Then, based on the theory of multi-input and multi-output (MIMO) control, a linear quadratic Gaussian (LQG) pitch controller is designed integrated with disturbance accommodation controller (DAC). The Loop transfer recovery (LTR) method is used to restore dynamic characteristics of closed-loop to improve the performance of the pitch controller. The feasibility of the LTR method is proved by detailed theoretical analysis. Finally, compared with traditional controllers, it is verified that the proposed LTR pitch controller can further reduce tower load while stabilizing output power in different wind conditions.http://www.sciencedirect.com/science/article/pii/S235248472100473XPitch controlTower loadLinear quadratic Gauss controlKalman filterLoop transfer recovery |
| spellingShingle | Shize Tang De Tian Mingyue Huang Bei Li Lizhuang Tao Load control optimization method for offshore wind turbine based on LTR Energy Reports Pitch control Tower load Linear quadratic Gauss control Kalman filter Loop transfer recovery |
| title | Load control optimization method for offshore wind turbine based on LTR |
| title_full | Load control optimization method for offshore wind turbine based on LTR |
| title_fullStr | Load control optimization method for offshore wind turbine based on LTR |
| title_full_unstemmed | Load control optimization method for offshore wind turbine based on LTR |
| title_short | Load control optimization method for offshore wind turbine based on LTR |
| title_sort | load control optimization method for offshore wind turbine based on ltr |
| topic | Pitch control Tower load Linear quadratic Gauss control Kalman filter Loop transfer recovery |
| url | http://www.sciencedirect.com/science/article/pii/S235248472100473X |
| work_keys_str_mv | AT shizetang loadcontroloptimizationmethodforoffshorewindturbinebasedonltr AT detian loadcontroloptimizationmethodforoffshorewindturbinebasedonltr AT mingyuehuang loadcontroloptimizationmethodforoffshorewindturbinebasedonltr AT beili loadcontroloptimizationmethodforoffshorewindturbinebasedonltr AT lizhuangtao loadcontroloptimizationmethodforoffshorewindturbinebasedonltr |