POWER OPTIMIZATION OF DIRECT-DRIVE WAVE POWER SYSTEM BASED ON EXCITATION FORCE ESTIMATION

被引：0

作者：

Huang Y. ^{[1
]}

Yang J. ^{[1
]}

Luo Q. ^{[1
]}

Lin H. ^{[1
]}

Wang C. ^{[1
]}

Liang H. ^{[1
]}

机构：

[1] School of Automation, Guangdong University of Technology, Guangzhou

来源：

Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2023年 / 44卷 / 08期

关键词：

forecasting; optimal power control; permanent magnet synchronous liner machine; wave energy conversion; wave power;

D O I：

10.19912/j.0254-0096.tynxb.2022-0596

中图分类号：

学科分类号：

摘要：

Aimed at improving the power capture capability of the direct- drive wave power system under irregular excitation force conditions，the maximum power extraction conditions were given based on the variational method，the corresponding perfect electromagnetic force was obtained by calculating it. In order to predict the unknown excitation force input，a sliding mode observer was designed based on the motor- hydrodynamic model，the system stability was proved by Lyapunov function. Taken the optimal electromagnetic force as the reference input，the desired current signal of the space vector control strategy tracking system is used to achieve the maximum power output. The results show that the proposed scheme has good robustness against model mismatch，higher prediction accuracy and output power of the system. It can detect the excitation force online，and promote the wave energy conversion rate of the system in complex wave conditions. © 2023 Science Press. All rights reserved.

引用

页码：556 / 562

页数：6

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