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Outline
Floating offshore wind turbines are faced with the problem that the unconstrained platform pitch motion will stimulate the resonant motion of itself and then reduce the power output, resulting in damage to the whole system. Collective blade pitch control is able to tune both generator speed and platform pitch motion. However, it is difficult for state -based feedback controllers aimed to satisfy multiple objectives to avoid the contradiction between control performance and computational cost. In this paper, a model reference adaptive control scheme with inner robust control law for multi-objective is proposed to generalized a linear control law designed for a particular operating point to the whole region, making the actual responses tracking the ideal ones to guarantee the performances of power generation and platform stabilization beyond rated wind speed. According to the co-simulation based on OpenFAST and Simulink under a series of wind and wave conditions, compared with baseline controller, the proposed controller obtained promotions in both generator speed tracking and platform motion rejection.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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