为提高不规则海况下直驱式波浪发电系统的功率捕获能力,利用流体仿真软件获取等效辐射阻尼力系数,建立波浪发电装置对应的非线性水动力模型,通过能量函数极值构造最优功率捕获下的反电磁力,基于磁场定向控制策略跟踪控制最优电磁力;针对实际模型失匹引起的状态误差和功率损失问题,设计自适应补偿控制律修正实际模型与理想模型间的偏差,补偿功率损耗。仿真结果表明：在同样波浪激励下,所提控制策略响应速度快,鲁棒性强,最高可提升系统约50%的输出功率并能补偿15%的功率损耗。
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%.
关键词
波浪能 /
最大功率点跟踪 /
永磁直线同步电机 /
自适应补偿
Key words
wave energy /
maximum power point tracking /
permanent magnet linear synchronous machine /
adaptive compensation
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] QIU S Q, LIU K, WANG D J, et al.A comprehensive review of ocean wave energy research and development in China[J]. Renewable and sustainable energy reviews, 2019, 113: 109271.
[2] 肖曦, 摆念宗, 康庆. 直驱式波浪发电系统浮子形状与排布优化研究[J]. 电工电能新技术, 2014, 33(9): 7-13.
XIAO X, BAI N Z, KANG Q.Research on optimizations of buoy shape and array geometry of direct-drive wave energy converters[J]. Advanced technology of electrical engineering and energy, 2014, 33(9): 7-13.
[3] FALNES J.A review of wave-energy extraction[J]. Marine structures, 2007, 20(4): 185-201.
[4] OH Y J, PARK J S, HYON B J, et al.Novel control strategy of wave energy converter using linear permanent magnet synchronous generator[J]. IEEE transactions on applied superconductivity, 2018, 28(3): 1-5.
[5] 康庆, 肖曦, 聂赞相, 等. 直驱型海浪发电系统输出功率优化控制策略[J]. 电力系统自动化, 2013, 37(3):24-29.
KANG Q, XIAO X, NIE Z X, et al.An optimal control strategy for output power of the directly driven wave power generation system[J]. Automation of electric power systems, 2013, 37(3): 24-29.
[6] 黄俊豪, 杨俊华, 蔡浩然, 等. 基于WFT的直驱式波浪能发电系统自抗扰功率优化控制[J]. 可再生能源, 2021, 39(9):1271-1278.
HUANG J H, YANG J H, CAI H R, et al.Optimal power control of active disturbance rejection for direct drive wave power generation system based on WFT[J]. Renewable energy resources, 2021, 39(9):1271-1278.
[7] 黄宝洲, 杨俊华, 沈辉, 等. 基于FFT的直驱式波浪发电系统功率优化控制[J]. 太阳能学报, 2021, 42(3): 206-213.
HUANG B Z, YANG J H, SHEN H, et al.Power optimization control of direct drive wave power system based on FFT[J]. Acta energiae solaris sinica, 2021, 42(3): 206-213.
[8] ZHANG Y, STANSBY P, LI G.Non-causal linear optimal control with adaptive sliding mode observer for multi-body wave energy converters[J]. IEEE transactions on sustainable energy, 2021, 12(1): 568-577.
[9] ZHAN S Y, LI G, BAILEY C.Economic feedback model predictive control of wave energy converters[J]. IEEE transactions on industrial electronics, 2020, 67(5): 3932-3943.
[10] 王庆龙, 张崇巍, 张兴. 交流电机无速度传感器矢量控制系统变结构模型参考自适应转速辨识[J]. 中国电机工程学报, 2007(15): 70-74.
WANG Q L, ZHANG C W, ZHANG X.Variable-structure MRAS speed identification for speed sensorless vector control of induction motor[J]. Proceedings of the CSEE, 2007(15):70-74.
[11] 卢思灵, 杨俊华, 沈辉, 等. 直驱式波浪发电系统的经济模型预测控制[J]. 电测与仪表, 2021, 58(3):131-138.
LU S L, YANG J H, SHEN H, et al.Economic model predictive control of direct-drive wave power generation systems[J]. Electrical measurement & instrumentation, 2021, 58(3):131-138.
[12] TAGHIPOUR R, PEREZ T, MOAN T.Hybrid frequency-time domain models for dynamic response analysis of marine structures[J]. Ocean engineering, 2008, 35(7):685-705.
[13] 佘致廷, 邹薇, 董旺华, 等. 扩展卡尔曼滤波结合前馈补偿永磁同步电机位置估计[J]. 控制理论与应用, 2016, 33(10): 1312-1318.
SHE Z T, ZOU W, DONG W H, et al.Extended Kalman filters combined with feed-forward compensation for permanent magnet synchronous moter position estimation[J]. Control theory & applications, 2016, 33(10):1312-1318.
[14] 林巧梅, 杨俊华, 蔡浩然, 等. 基于滑模控制的直驱式波浪发电系统MPPT控制策略[J]. 电测与仪表, 2018, 55(10): 90-95.
LIN Q M, YANG J H, CAI H R, et al.MPPT algorithm for direct-drive wave power generation system based on sliding mode control[J]. Electrical measurement & instrumentation, 2018, 55(10): 90-95.
基金
国家自然科学基金（51370265）; 广东省自然科学基金（2018A030313010）; 广州市科技计划（202102021135）
PDF(4224 KB)
