OPTIMAL CONTROL OF WAVE ENERGY GENERATING POWER BASED ON REFERENCE MODEL COMPENSATION

Lin Huijin; Yang Junhua; Qiu Meng; Xie Zisen; Huang Weibang; Huang Yi

doi:10.19912/j.0254-0096.tynxb.2022-0107

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (6) : 8-14. DOI: 10.19912/j.0254-0096.tynxb.2022-0107

OPTIMAL CONTROL OF WAVE ENERGY GENERATING POWER BASED ON REFERENCE MODEL COMPENSATION

Lin Huijin, Yang Junhua, Huang Yi, Qiu Meng, Xie Zisen, Huang Weibang

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Abstract

In order to improve the output power of the direct-drive wave energy conversion at irregular sea conditions, the fluid simulation software was used to obtain the equivalent radiation force coefficient and formulate the corresponding nonlinear hydrodynamic model. The inverse electromagnetic force under optimal power capture is constructed by the extreme value of the energy function. The optimal electromagnetic force is tracked and controlled based on the field oriented control strategy. Aiming at the state variable error and power loss caused by the mismatch between actual model and ideal model, an adaptive compensation control law was designed to correct the deviation and compensate for power loss. Simulation results show that the proposed strategy has fast response speed and strong robustness on direct-drive wave energy conversion system under the same complex wave excitation, and can increase the output power of the system by about 50% and compensate the power loss by 15%.

Key words

wave energy / maximum power point tracking / permanent magnet linear synchronous machine / adaptive compensation

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Lin Huijin, Yang Junhua, Huang Yi, Qiu Meng, Xie Zisen, Huang Weibang. OPTIMAL CONTROL OF WAVE ENERGY GENERATING POWER BASED ON REFERENCE MODEL COMPENSATION[J]. Acta Energiae Solaris Sinica. 2023, 44(6): 8-14 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0107

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